THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA LOS ANGELES GIFT OF SAN FRANCISCO COUNTY MEDICAL SOCIETY Peroral Lndoscopy and Laryngeal Surgery BY CHLVALILR JACKSON, M. D. 'rofessor of l.aryiigology, University of I'ittsbiirgli ; Consulting l.aryngologisl Bronchoscopist, Esophagoscopist, and Gastroscopist, Western Pennsylvania Hospital ; Laryngologist, Presbyterian Hospital ; Laryngologist, Eye and Ear Hospital ; Consulting Laryngologist, Western Pennsylvania Hospital for the Insane; Consulting Laryngologist, Bronchoscopist, Esophagoscopist and Gastroscopist, Montetiore Hospital; Consulting Laryngologist, Bron- choscopist, Esophagoscopist and Gastroscopist, St. Francis Hospital ; Consulting Laryngologist, Bronchoscopist, Esophagoscopist and Gastroscopist, Passavnnt Hospital : Bronchoscopist and Esophagoscopist, Allegheny General Hospital; Bronchoscopist and I'.sophagoscopist, Pittslwrgh Hospital for Cliililrcn. WITH SIX COLOKKD PLATES AND 490 ILIA S'l'KATIONS. SAINT LOUIS. MO.. U. 5. A. THE. LARYNGOSCOPE COMPANY, PUBLISHERS. 1915 Copyright, ]!tM By Chkvai.ikr Jackson. All Rights Reservkd. Unrr HIS" To Mv MoTHliR T(i W'liosK IxTi':Ri;s'r in Mkdical Scienck Till'; AuTHciR (JwEs His Incicmui':, And to Mv Fatiikk WiiosK Constant Advici: to ■'Edl'cati-: Till-; Evic and tiu-; Fingi;ks" Si-i'RRKD Tin; Altiior to Continual Ei'i-ort, Tins Book is Atfectionatkly Dkdicaticd. ^^4i^86 Preface. A number of repetitions of fundamental facts have been necessary in order to facilitate ready reference in the limited time available for the busy surgeon without perusing the entire book. But, as full repeti- tir)ns were ini]>ossible. it is hojied IJiat. for full coniprehcnsidn, the en- tire book shall have been previously read. Symi)toms are referred to only in so far as they concern indications or contraindications for endo- scopy. Diagnosis is referred to only in so far as it is to be made endo- scoi)ically. .\n earnest effort has been made to give due credit to every- one so far as possible within the limits of a practical manual. This effort resulted in such an enormous niunber of references that, to sa\e repeti- tion, the references are all compressed into a numerical "liibliography ' at the end of the hook, referred to in the text as "Uib." followed liy the number. The author cites his personal experiences for what tlie\- may be worth ; and he apologizes for the frequency of these citations, which is necessitated by the newness of the field, and the nature of the book. The French saying: "Neither never nor always" is particularly appli- cable to surgery. The author has tried to make the use of these words as rare as ))ossible because "circumstances alter cases," and great injus- tice might follow dogmatic assertions. For literary shortcomings, the author asks indulgence because, even if he were more capable, literary work, as with all clinicians, is done under stress of limited time and op- portunity L'niess otherwise credited, the illustrations are jihotograiihic reproductions of drawings and jjaintings by the author who solely is responsible for illustrative errors and shortcomings. Thanks are due. first of all, to the great master, I'rof. Killian. for kindlv consiijcration .-uid for doing me the honor of writing the Chapter on Sus])ension Laryngoscopy. I'dr the translation of that Cluijiter the author is indebted lo Dr. j. .\. llageman. and for editing the translation, as well as for valualile advise and assistance, to Dr. M. .\. (loldstein. I"r)r aid in the literar\' work the ;u)tlu)r acknowledges his great obligations to Miss Josephine W. W bile. Thanks are due to Miss liabette Kahn for tlie careful |)re]iar;ition of the very comjilete index, h'or the accuracy of case records and for assistance in all phases of the work, clinical and literary, thanks are due to that able endoscopist. Dr. Ellen J. Patterson. The author wishes here to express his appreciation of tiie part taken liy the following associates with whom he has for years worked shoidder to shoulder and without whose aid whatever measures of success that may have been attained would have been impossible : Drs. Patterson. P.oyce. Price, Clark. McCready, Lichtenfels, McKee, Fisher, Sim][)son. l^'pham, Spiro; Mrs. P.raddow ; Misses Ketcham. Saun- ders. Eissler, Bear, Dice, Talbot, Lewellyn, Symes and Piird. T-ast, and not the least important, the author's thanks are due to the profession, general and special, at home and abroad, for the clinical material and the hearty support which have rendered this book possible. Especial assurances of appreciation are due the staflfs of various hospitals with which the author was not connected, for their broadmindedness in sanctioning the author's aid in the relief of ward sufferers. Chevalier Jackson. l^ittsbnrgh, Pa., July, l'.il4. Contents. Chapter I. Instnimciits. Chai)tcr II. .\natoni\-. Chapter III. Preparation of the Patient f(^r Peroral Eiuioscopy. Chapter 1\'. Anesthesia for Peroral Endo-eopy. Chapter \'. I'.ronclioscopie Uxygen Insufflation. Chapter \I. I'o^iition of the Patient for Peroral Endoscopy. Chapter \ 11. Direct Laryngoscopy. Chapter \'III. Suspension Laryngoscopy. Chapter IX. Introduction of the Bronchoscope. Chapter -\. Introduction of the Esophagoscope. Chapter XL Ac(|uiring Skill. Chai)ter .XIl. I'oreign llodies in the Air and I'ood Passages. Chapter XI II. Eoreign I'.odies in the Larynx and Tracheobron- chial Tree. Chapter Xl\ . Remu\al of l'"oreign IJodics from the Larynx. Cha])ter W. .Mechanical Problems of P.ronchoscopic Foreign P>ody Extraction. Chapter X\'l. I'oreign P.odies in the P.ronchi for Prolonged Periods. Chajiter X\ 11. L'nsuccessful Cases of llronchoscojiy for Foreign I'.odies. Chapter X\'11I. I'oreign liodies in the Eso]>hagus. Chapter XIX. I'.sophagoscopy for l"oreign I'.odies. Chapter XX Cliai'tLT XXI Cliaiiter XXII Cliaiiter xxm Chapter XXI\' Chapter XXV Chapter XX\1 i>:stri'mi-:nts. Plenroscopy. XXI. Ilhistrative Cases of Endoscopy for Foreign RocHes in the Air and Food Passages. Benign Growths in the Larynx. Benign Growths IVimary in the Tracheobronchial Tree. Benign Xeoplasms of tlie Esophagus. Endoscopy in Mahgnant Disease of the Larynx. Bronchoscopy in .Malignant Growths of the Trachea. Chapter XX\'II. Malignant Disease of the Esophagus. Chapter XX\"I1I. I^irect Lar}'ngosco])y in Diseases of the Larvnx. Chapter XXIX. Bronchoscopy in Diseases of the Trachea and Bronchi. Chajiter XXX. Diseases of the Esophagus. Chapter XXXI. Diseases of the Esophagus (Continued). Chapter XXXII. Diseases of the Esophagus ( Continued ). Chapter XXXIll. Di.'ieases of the Esophagus ( Continued ). Chapter XXXIN'. Diseases of the Esophagus ( Continued 1. Chapter XX X\'. Gastroscopy. Chapter XXX\'I. External Lar}ngeal Surgery. Chapter XXXVII. Tracheotomy. Chapter XXXVIII. Chronic Stenosis of the Larynx and Trachea. Chapter XXXIX. Intubational Dilatation of Chronic Laryngeal Stenoses. Laryngostomy. Decannulation .\fter Cure of Chronic Laryngeal Stenosis. Malignant Disease of the Larynx. ?\lalignant Disease of the Larynx (Continued). Technic of Thyrotomy for Malignant Disease of the Larj'nx. Technic of Larvngectomv. Chapter XL, Chapter XLI, Chajiter XLII Chapter XLllI Chapter XLIV Chai>tcr XL\' Chapter XL\"I Part I. CHAPTER I. Instruments. Since the author's earlier work was ])iiblished a large number of new instruments and modilications of old forms have been devised. Each of them is probably useful to others besides the originators; but it is clear that there will never be a universal instrument. Each endo- scopist will work successfully with those instruments to which he is accustomed. ]'>y this it is not meant that a wise selection is of no im- portance: quite tlie contrary. In general surgery, if knives are sliarp, instrumental e(|uipment is of minor importance. In endoscopy, however, the instrumenlarium is an absolutely fundamental element for success. It is no wonder that some of the laryngologists who have taken up endos- copy have been discouraged, when one looks at the miserably inefticient. clumsy instruments with which their first attemi)ts were made. I n- fortunately there are many bad mechanics in the world, an 2) Moshcr's e^ophaposcopc sliowing distal light and mandrin for intro- IN'STRUMEN'i'S. 15 scopes is the indirect one of Lewisohn. The author saw it passetl upon a patient with practically no discomfort and the view was good. In its present form it is, of course, adapted to sim])le inspection, not for the I ^^f^ 1 ■ • • I • . • I ■ • ■ • I ■ ■ • ■ I ■ ■ ■ ■ I ' • • ' ■ .' ■ ■ m^ -(^^ Fk;, (). Giiisiz's e. septic instrument need be introduced into the trachea, because, as abundantly proven by laljoratory examinations of secretions withdrawn from the bronchi through the bronchoscope, the bronchoscope need not be con- taminated in introduction. Laboratory work has shown that there is, under normal conditions, a sharp line of limitation of oral sepsis at the INSTRUMRNTS. 17 orifice of the larynx. The first form of laryngoscope used by the author was modeled after the original Kirstein ''autoscope" which had its trans- verse greater than its vertical diameter. A double handle was attached to a simple oval tube with half its periphery cut away for the distal two- thirds of its length (Fig. 15). Then, after Killian created hronchoscopv, the author added a slide at the side for bronchoscopy. Pioth of these Fig. 8. Kaliler panelectroscolie. The tulics used with this arc similar to the sliding tubes of Briinings. The rays of light from the lamp, h, are rcHccted by the mirror, g, into the tulie, e. The endnscopist's eye is placed at the notch in the mirror, g. The mirror can be thrown out of the way for the introduction of in- struments hy pressure of the tluimli on the arm, c. laryngoscopes were used with the ordinar_\- head-mirror, and witli the Wendell C. Phillips head-lamp worn between the eyes. As the author found the oval lumen less convenient than the round for working at the side instead of over the dorsum fif the tongue, as he fre(|ucntlv wished to do. he abandoned the n\al lumen for the niund lumen with the slide 18 INSTRUMENTS. Fig. 9. Hill's modification of the Chevalier Jackson laryngoscope. 3Q CCHVMCTRCS ->i Fig. 10. Hill's esophagoscopc. Fig. II. The author's tubular speculum to which Dr. Richard H. Johnston added the laryngoscope detachable handle (A), preferring this narrow tube to the wider laryngoscope tube. At the left Dr. Johnston is using the tubular speculum with handle detached, the patient being in the straight position, witliout extenson of the head. INSTRL'MKNTS. 19 at the side. As the edges of tlie shde were then made the\' became rough in use, and to {jrevent this the sHde was moved to the top and in tliis form, witli the addition of the light carrier of the Einliorn esoi)hagoscope, it has been in general use ever since. Recently some men who have done the author the honor to work with him ha\e found the oval model so Fig. 12. Mosher's laryngeal spatula with dental protector. Fig. i.v Ij. M. Dickinson's larynKOSCopc. convenient for the introduction of esoi)hagosco])es. lironchoscopes, and es[)ecially intratracheal insufflation tubes, that it has iieen deemed worth while to re-urrert the o\al mnikl. Tlu- .slide can be left off altogether and thus removal of the laryngcjscojie after introduction of tubes of all kinds is facilitated, as in the Dickinsun siieculum. The o\al lumen, giving a larger fiel.d. has the additional advantage of facilitating the 20 I.NSl'KL'.MHiN'TS. identifications of land-marks and of affording more room for endo- laryngeal operations. Probably many operators will prefer working through the oval laryngoscope to the method that has seemed easiest to me: namely, using the round lumen laryngoscope for vision only, the forceps and other instruments being passed alongside the laryngoscope. The width of the oval lumen laryngoscope will be found greatly to increase the difticulty of exposing the anterior commissure. Everything considered, the regular laryngoscope (Fig. 14) will be found preferable. I J Fig. 14. Author's separable speculum for passing bronchoscupes and lor di- rect laryngoscopy. This instrument, also called "direct laryngoscope," laryngeal speculum, etc., has been found perfectly satisfactory without modilication in size or shape. Two sizes are needed, one for adults and one for children. The au- thor personally never used the handle, A. B., in the child's size instrument, (sub- stituting a hooked end) because he always examines children recumbent. For endos- copists who use the sitting position for children the handle is a great advantage. A number of modifications have been made by varioua endoscopists to suit their individual requirements. (Illustration reproduced from the author's earlier volume.*) Bronchoscopes. In bronchoscopes the author has been unable to im- prove on the light, simple, well-illuminated instrument shown in Fig. 1(>. His only failures to remove foreign bodies from the bronchi since com- mencing to use this instrument a number of years ago, were due to fail- ures to find four pins which were in minute bronchi beyond the limits reachable by a 1 mm. tube, in other words, beyond the limits of bronchos- copy. In no instance has this bronchoscope been found wanting. Four sizes are sufficient for every possible case from a new-born in- fant to the largest adult. •Tracheo-bronchoscopy, Esophagoscopy .and Gastroscopy. PubUshed at St. Louis, 1907. IXSTRUMKNTS. 21 The selection of a tube for the particular case no longer presents the difficulties that it did when a large number of tubes of various lengths were thought to be necessary. The bronchoscopes and esophagoscopes can, as a rule, be selected absolutely by the ages mentioned in the given list. Naturally there is a border-line between the older child and the young adult, where a slightly larger size than the child's size could be used where the adult instruments are slightly too large. In the case of the bronchoscope, this field is fully covered by the 7 mm. instrument, which can be used in such cases, and is plenty large enough for work in an adult also, though for adults of average-sized larynx and trachea it is much better to have the !1 mm. bronchoscope, as it gives a much larger Fig, 15. Form of the first of the author's laryngoscopes originally used with the Wendell C. Thillips headlight. Here shown with Einhorn li.ght carrier add- ed. The slide at the side can he left off altogether, if desired, to facilitate the re- moval of the laryngoscope after the insertion of Ijronchoscopes, intratracheal in- sufflation anesthesia catheters, etc. The instrument shown in Fig. 14 is prcfcralile. field of view. In cases where it is desired to enter a ver)- small branch bronchus, low down, it would be necessary to use the 7x10 bronchoscope in an adult. In children under one year of age the T) mm. bronchoscope, is used by many .American bronchoscopists, but as it does not ordinarily go through easily, some traumatism may be done to the lar>nx which will result afterward in subglottic edema. The author and Dr. b.lkn J. Patterson always use, in such cases, 4 mm. bronchoscojies, through the mouth ; but to those who have not practiced work with small tubes, this may ])rove rather difficult. From one to five years of age, a ") mm. l)ronchoscope will be found perfectly satisfactory for use through tl;e larynx. .\t six years of age and over, the 7 mm. INSTKUMHNTS. bronchoscope can be used through the larynx without risk of subglottic edema, if none has existed prior to the bronchoscopy, and if manipula- tions be gentle. ^ Fig. i6. Author's lircmchoscope as originally devised. The author has had adried to this the small hranch tube suggested by T. Drysdale Buchanan. (Fig. 17). The slanted tulie mouth gives a lip that not only facilitates introduction, but has manifold uses. All of the author's tubes are fitted with "cold" lamps, which lie in a recess out of harm's way and out of the line of vision, .\spirating canals were found occasionally useful before the author developed his "sponge-pumping" method of removing secretions. r^ Fig. 17. Dosimetric anesthetizing attachment for the bronchoscope. Devised by Dr. T. Drysdale Buchanan. The small branch tube ends in the lumen of the bronchoscope, and not in an auxiliary canal. All of the author's bronchoscopes are now made with this small liranch tube, as it has been found very useful for bron- choscopic oxygen insutTlation. If inslnimcnts are selected by the tjiven suggestions, as to sizes, there will nexx'r be any nee'i'iu'MI';nts. 33 cign body but lo grip firmly on witlidiawal. Copying al'lcr Killian. ibc author's early forceps were all tluis made ; but instrument makers have drifted away from the original model until now they are turned out with evenly notched serrations that are very smooth on the top edges instead of being sharp and canted as show^n in Fig. oU. The shape of serrations and their action can be readily understood by looking at the lower feed mechanism of any sewing machine or the gripping-jaw of any pipe- wrench. Such forceps, however, are capable of much traumatism if carelessly used, and under no circumstances whatever should such a for- ceps be placed blindlv into a bronchus which is so small that the closure Fig. 2S. .\iithur's universal handlL' with nut- furm of forcign-lHuly jaws at- tached. Tills handle mecliani.sm is so simple and delicate that the most extinisite delicacy of touch is jiossible. Unfortunately, instrument makers have often omitted the little tliumli nut indicated ahove, with the result that the stylet was pulled through when strong traction was made. The cannulae are 45 cm. and 60 cm. long. There is a smaller size made for infant use, just half of the dimensions except those of tlie handle. of llic forceps cannot be watclied. ll blind groping in a .--niall broiKlius is ever justiliable. it is oiil\ so willi forceps whose serrations arc rounded and not canted. The author prefers all inslrunients, and especially fnr- ceps. in the lightest ])ossible form consistent with the amount of strength necessary plus a sunicii-ni factor of safety, b'urthermore, for lightness of touch it is absolutely necessary to dispense with springs to throw the forcei)S open. A si)riiig-opi)osed forceps cannot possibly communicate to the fingers the lightness of tomb which is essential. For general work, the author has never found anyliiing better than the forceps illustrated in his first work on bronchoscopy ( I'.ib. 2iiiM. The ring handles do away 34 INSTRUMENTS. with the necessity for opening springs. These forceps enable exceeding Hghtness of touch by which one can easily tell if the foreign body is prop- erly grasped, and also enable the endoscopist to gauge precisely the de- gree of pressure that can be applied without crushing the foreign body in the case of friable bodies. The selection of the forceps for use in a particular case is a very important matter and concerns the mechanical problems very closely. In Fig. 29. Side-curved jaws for the author's forceps. Reproduced here to em- phasize their usefulness. (Bih. 269.) Fig. 30. Enlarged view of the author's foreign-body jaws, showing proper slant of serrations to prevent slipping. This slant is often lacking in the instru- ments in the shops. Fig. 31. Schema showing test of author's forceps. If properly adjusted, the point of the jaws of the forceps, F, w^ill pick up the epithehum and elevate the skin from the palm of the hand (S) held vertically in contact with the point of the forceps jaws, when traction is made. This shows that the jaws come together first at the point in closing. Fig. 32. Killian's "bean forceps" showing the cant of the serrations to prevent slipping which should be on all foreign-body forceps. The fenestra are to lessen the tendency to crush friable bodies like beans. most instances, however, the plain jaw-forceps with canted serrations shown in Fig. 28, will serve everj' purpose. Almost equally useful is the side-curved forceps shown in Fig. 29, and if the author were limited to a single forceps, it would be this side-curved form (Fig. 29). The jaws projecting sidewise are easily seen closing. .\ large proportion of the successful foreign-body extractions by the author have been done INSTRUMENTS. 35 with these two forms of jaws. The exceptions to their use are when the foreign body must be turned in order to make the proper points pre- sent themselves. In the case of pins and needles, the side-curved for- ceps can always be used to cause presentation of the foreign body in the proper axis for removal. With irregular objects, however, having one point sharp such as angular pieces of bone, it is very necessary to disen- gage the foreign body near the point with a forceps that will permit rota- tion ; and for this puq)ose, the rotation forceps shown in Fig. 33 are ideal, because the points will hold firmly, yet will permit the foreign body to turn in the direction of least resistance. In another class of cases they can be made to throw the point out from the wall and into the mouth of the tube where the point is shielded from doing damage to the tracheal or esophageal wall, as will be explained in connection with the mechanical problems of brpnchoscopic and esophagoscopic extraction of foreign bod- ies. The author has a separate handle for each forceps in order that not a moment may be lost in changing handles at a critical moment, should a different form of jaw be required. The jaws can be adjusted at any angle, but it is the author's practice always to have them open in an up and down direction, and when other directions are needed, the forceps' handles are turned in the |)njijer way ; thus a certain co-ordination and nerve-cell habit is established by which the operator always knows in which direction the jaws are opening. This facilitates promptness in the ocular endoscopic recognition of the jaw movement, because the observ- er knows for what to look. The curved-jaw forceps should always have the curve to the left of the ojjerator. as this is the most convenient posi- tion in which to observe the jaws close and to guide their w'ork with the eye. I'n fortunately, many instruments were turned out by various manufacturers labeled with the author's name which were heavily con- structed, having tile jaws of poor lcnii)cr and without the very essential little thumb nut, iMg. 2S. This omission may have been ])artly due to the fact that it was not shown clearly on the early illustrations. This thumb nut i)ermits the o|)crator to exert great jiower without any danger of the jaw-stem pulling through. The screws at the side are still used in order to lock the jaw-slom so that it will push forward for opening the jaws. Another misfortune is the fad that many of these instruments are very clumsily manufactured. The author uses two different strengths of for- ceps, the one reasonably heavy for use through all except the very small- est tubes. For the infant bronchoscopes, very lightly constructed for- ceps are used because great strength is not necessary. It is necessary to see the forceps close, and fur this very slender forceps are required. They are just half the strength and half the size, in all dimensions, of the regular forcejis, except that the handle is the regular size. They are 45 cm. in length of cannula. 3G IXSTRL'MKXTS. Occasionally, it is desired to twist a foreign Ixnly. The regular for- ceps will be found to give all the rotatory force that it is safe to use. If excessive twisting movement is to be applied, use may be made of the author's forcc]-s with S(|uare cannula, into whicli the stiletto, also squared, works at a good easy fit, yet will not spring. For cutting in two of pins, wires and the like, Casselberry's forceps. Fig. o-J, are excellent. Before using, howexer, it is well to test the.n on a pin similar to the one in the patient, because if not correctlv made thev will not hold the fragments. Fig- 33- Pointed jaws for the author's forceps. Useful wlien it is ilesired to permit turning of a foreign body to a safer relation for withdrawal, while securely held, as with hones, vulcanite dentures, pin-buttons, safety-pin>, etc. The points must meet point to point exactly; the bend must be acute and the length of the point from the bend must be short — not over 2 mm. These forceps are especially valuable for the esophagoscopic removal of open safety-pins by the author's metliod nf pushiui! them to the stomach, turning and withdrawing as elsewhere herein ex]>laiued They arc called "rotation forceps." Fig. 34. Casscll)erry's forceps for endoscopic pin cutting. When correctly made the ends of the [lin are held by the forceps so as not to be lost. Briinings uses an extensible forceps which can be adjusted fur dif- ferent tube lengths. Tissue forceps. For the removal of siiecimens fnini any pari of the air or food passages, the author's forceps illustrated in Fig. 3."), far sur- pass anything ever tried by him. The movable jaw will take hold direct- ly on the side wall, and there is no need of a side-acting forceps. Indeed, a side-acting forceps will not work because it cannot be pushed sidewise unless the lateral push is furnished by the movement of tiie endoscopic tube. ^\ ith the forceps illustrated in Fig. o.t, however, a ready hold is gotten in anv kind of tissue withoiu any lateral movement of the endos- l.NSTRUMKNTS. :?7 copic tube through whicli tlic fiirceps is passed. 'I'he jaws can be turned in any direction, though the author's own personal habit, as with foreign body forceps, is to leave the jaws fixed in the up and down direction and to get all movements by placing the handle, during the work, in tlie de- sired position, leaving the jaws always in the same ])osition rclati\e to the handle. It is wonderful what facility can be de\clij|ied by using this -yt^ Fig. 3$. Autlior's tissue forccp.';. The side jaw will liite into a flal lateral wall. The cross forms the l)ottom of a haslcet to hold the tissue removed. The action is very delicate, tliere being no springs. The sense of touch can often make the diag- nosis. The best form for removal of a specimen and for endoscopic operations. The actual lengths of the forceps cannulae arc 60 cm. and 30 cm., respectively; the latter being for laryngeal use. Fig. 36. Author's alli.ijator punch fnrccps with bar across both upper and low- er rings to form a "basket " to hold the excised fragments. These forceps will go thnjugh the author's adult laryngoscope, but he finds it advantageous to insert the forceps alongside the laryngoscope, wliicli latter is only used to look through in the ocular guidance of the forceps. method. ( >f course. diliereiU lengths are re(|uircd fur work in the larynx and in llic esophagus, but clinicall\' forceps wUli a :in cm. cannula are best for llic larynx. an steel piano wire and fitted to the Fig- 39- Thimble bite block (on finger) originally suggested by Boyce and im- proved by McKee and McCready. Ether is insufflated through the tube, if needed, for esophagoscopy. The tulie on the bite block is not used in bronchoscopy. .r^rrTnTtfTTIimmnil 1^:^^^=! Fig. 40. Author's mechanical spoon for the endoscopic removal of soft friable bodies like beans, peas, meat, and nut kernels. The spoon-shaped extremity is in- serted alongside the intruder which is then lifted and drawn into the cud of the bronchoscope or esophagoscnpc- by the action of the s|>oon when the handle is de- pressed as shown by the dotted line. massive handles of the Peters tonsil snare. By firm downward pressure on the cannula the loop can be made almost completely to amputate the involved epiglottis cii masse, as demonstrated by dis.section of the re- moved tissues. The cannula is passed beside the laryngeal speculum, not through its lumen. Bronchoscopic and esophagoscopic snares are oc- casionally of service in solving the mechanical problems of foreign body extraction. The authur on r.irc occasions uses a verv delicate snare 40 INSTRUMENTS. (Fig. -18) made to work on a slight modification of his universal handle In use, the snare loop is given a bend or a double curve in one of many ways (a few- of which are shown in Fig. 42) in order that it may be placed by sight. The wire is easier seen among the mucus if it is not bright, black wire giving the strongest contrast. The end of the snare cannula is so made that the loop can be rotated, and also so that the wire cannot be draw n all ibc way in nor kinked : therefore the same wire can be iHished or pulled out and reapplied after an unsuccessful attempt. 1 looks should have 'i cm. of the proximal end of their stem bent down, cxacth in the opposite direction from that of the hook, to for:n Fig. 41. Heavy snare cannula to be attached to the handle of Peter's tonsil .-nare For the en masse removal of the diseased epiglottis or large tumors of the lower pharynx and upper laryngeal aperture. Chondromata and even the toughest of fibromata are readily removed with this snare. The snare is passed alongside the laryngoscope, not through it. Fig. 42. Bronchoscopic snare to tit the author's form of forceps handle, llie various shapes, shown in the lower illustration, are imparted to the snare loop as needed to solve the mechanical proljlem presented by the particular case. a handle in order that the exact direction of the hooked end may be known to touch as well as sight. The Lister hook and the half-curved and full-curved hooks of Killian have done gOod service. Ingals has de- vised a corkscrew -hook to bring a pin into the center of the lumen. Richardson (Bib. 4 b^ ) has devised an ingenious screw-pointed ex- tractor with which he removed a rul)l)er pencil eraser. Spectacles. A most important part of the armamentarium is prop- er spectacles specially devised for the work. If the endoscopist has no refractive error he will need two pair of jilane protective spectacles with INSTKl.-Ml'.Nl'S. 41 B Fijr. 4,!, Cups for anesthetic solutions designed originally by Vankaucr for nasal use. Being heavy and broad based, they do not upset readily. The author has had a red band painted on one (B) which is for 20 per cent solution, which is used with great caution. Fig. 44. The author's endoscopic syringe for injection of solutions of radium salts, local anesthetics, and other medicaments. It is made in 60 cm. length for bronclioscopic and csophagoscopic \\-,e, 30 cm. for direct lar\ngoscopic use. The capacity is 25 mgm., though it could be made for larger quantities of solution if desired. Fig. 45. The author's small ililiitor lor lirunchc i^cupic dilatation of bronchial strictures. The dilator is actuated b.\ the author's universal forceps handle. F'ig. 46. The autlKrr s l.irgcr dilating forceps with a channel in each member. so as to furnish a canal when the dilator is closed for insertion. In use, this canal permits the dilator to be pushed down over the presenting point of such bodies as tacks. An enlarged form of this is sometimes used for the larynx. 42 INSTRUMENTS. ven' large eyes. If astigmatic, hypermetropic or myopic, correction is necessary and duplicate spectacles must be in charge of a nurse. If presbyopic, two pair of spectacles for 40 cm. distances and two pair for 65 cm. distance must be at hand. The reason for duplicates is that there is little or no loss of time in cleaning spattered lenses. One nurse is de- tailed for spectacles and she keeps them on a gauze-covered basin of warm water on the stand of which hangs a dry towel. The nurse cleanses the soiled spectacles and has them ready for immediate exchange. Hook- « -zr cm. _ . \ Fig. 47. The author's galvanocautery electrode for endoscopic use. It is es- pecially adapted to cauterization of subglottic edema, and subglottic hyperplasia such as follows diphtheria. As with the author's pointed electrode (Bib. 269) the hard rubber is vulcanized onto the conducting wires, assuring cleanliness. Thread wound electrodes become filthy with blood and secretions. ESijta Fig. 48. Mosher's esophageal dilator. B. Actual size of distal end. =^e Fig. 49- vcrtebrated. I'luminer's double olive bougie. The stem between the two olives is temple frames should be used. Eye-glasses are objectionable because they are not so quickly placed by the nurse when exchanging, and also because they are very apt to become displaced while working. Of course, the operator cannot handle them after he has sterilized his hands. Endoscopic table. In an emergency any sort of table can be used, but where a special table is to be provided, the best one to be obtained is INSTRUMENTS. 4;? that of Dr. T. R. French (Fig. 54) designed especially for nasal and throat operations. The ease with which a trained assistant can raise or lower, or change the angle of inclination of the patient is a great con- venience. The shortening and lengthening of the head-end of the table enables the operator to have any desired degree of overhang of the shoul- ders. All of these movements are under perfect control of the wheels manipulated by the second assistant. The table should be covered with a good pad against which a child can be held firmly without discomfort. Oj^erating room. All peroral endoscopy, except the diagnostic ex- aminations of children suspected of diphtheria, should be done in an Fig. 50. Author's eyed bougie for esophagoscopic threading over a swallowed braided silk string. Twelve bougies with successive sizes of olives are made. The pro.ximal end of the string is threaded through the esophagoscope. The esophago- scope is passed ; then the bougie is threaded and passed along the thread which is held taut. Fig. 51. Upper illustration. Author's eycd-probe for endoscopic use. Lower illustration. Author's string-cutting esophagotome. The braided silk cord works in a protecting groove on one side of the olive, the cutting being done on the other side which is turned toward the cicatrix when the latter is not annular. operating room. A room which can be darkened is a necessity for en- doscopy. Absolute darkness is of course not necessary nor desirable. There should be enough illumination, of a feeble kind, to permit the nurses and assistants to find wdiat is needed on the sterile table. It is quite necessary that whatever windows there are should be at the back of the operator, because a little streak of light leaking in past blinds and shining directly into the eye of the operator, is partictilarlv annoying and an inconvenience. The expert operator will get along with quite a bright a IXS'I'KUMI'.XTS. light in the ronni. but when it comes to intricate and difficult work, it is necessary to have a darkened room. All endoscopy should be done with both of the endoscopist's eyes o]jen. Prolonged work with the left evelid closed is very fatiguing, and interferes with \ision of the right. Ignoring of the image of the open left eye is facilitated by a darkened room. Operating room orqanicatioi. Once an endoscopic procedure has been starteil, moments are exceedingly precious. For this reason, every de- CLOSED OPEN Fig. $2. .\uthor's dilator for endoscopic use in lironchial and esophageal stric- tures. Invaluable in dilating successively each of a series of strictures, especially when the lumina of the lower ones are eccentric to those above, because it does not need to be inserted far. ,c 60-cm- B < -lo-cm^ > Fig. 53. Filiform bougie for minute cicatricial strictures of the esophagus. The filiform silk woven end, A, is joined securely to a spring steel shaft, B, thus giving all the advantages in safety of a silk woven bougie at the tip with a stiflf shank that enables the bougie to be carried down rigidly through the length of the esophagoscope. Twelve sizes are made. The total length of 60 cm, is only neces- sary in case of a very low stricture in an adult. For use in children, the bougie ran be shortened by unscrewing. The great advantage of the steel shaft over any sort 01 stylet inserted into a hollow filiform is that the small diameter of the steel shank permits of more accurate ocular guidance. These bougies are modeled after those of Guisez. tail must be carried out including c\ery instrument that would e\er be wanted. Instruments not likely to be needed are kept sterile on a se[)arate table, so that the working table will not be encumbered by anything but the regular working-set of instruments. The tubes are all kept with tin; batteries in the manner shown in Fig. 5."), so that the surplus tubes not in use will in no way interfere with the quick handling of forceps and sjionge carriers. The arrangement of the instrument table, the assistants, the batterv, instrument nurse and anesthetist, as shown on page 4i) in IXSTRUMKNTS. 45 the earlier volume, lias lieeii [)roven to be invaluable in expetliting care- ful work. The great advantage of having these regular positions is the avoidance of confusion. Anything needed is always in precisely the .■^ame location. The author has been able by this means to do just as good work in one hospital as in another by taking an assistant and a nurse with him. This, however, is not meant to say how good or how bad the work may have been, but such as it was, it represented the liest that the author could do under any circumstances. O.vyc/ni tank and tracheotomy instruments. In all instances, as a matter of routine, instruments for traclieotomy should be on the sterile table read\- for immediate use in every case of bronchoscopy or esoph- agosco[)y. or direct l;>ryni,mscopy. It is exceedingly rarely, rclatixcly, Fig. 54. Dr. T. K. Frenfli operating talilc. All positions are readily obtained by tbc three control wheels. The bead board can be extended or shortened to bring the shonlders of the patient to the best position. that they will lie reipiired, but when nee(le) is most manageable. It shotild be covered with sterile towels pinned on, over valve-wheel and all, and a length of sterilized rubber tub- ing should be connected. I f this lank should be prepared only in such cases as may seem beforehand likely to need it, the surgeon will find, to his chagrin, that when most wanted it will not be at hand. It is just such little details that make the dift'erence between high ami Idw morlal- itv in anv siu'gical procedtire. In rcspir.itory arrest from the pressure of the esoi)hagoseope or of the foreign body, lumor, diverliculnm full of food, resi)iralii)n will not be started again unless a bronchosct)pe be in- 4G INSTRUMENTS. troduced into the tracliea or a tracheotomy be done for oxygen and amyl nitrite insufflation. Amyl nitrite should always be at hand in the torm of capsules. Head cozier. The author uses a head cover for the patient, which is simply a muslin bag large enough to go down to the shoulders. A round hole about four inches in diameter is cut at the level of the mouth. This cap enables the operator and the second assistant to hold the head without infecting their hands. It involves a grave risk to handle instru- ments that go into the lung after handling a patient's head. Asepsis. The author's early insistence (Bib. 2(39) upon strictly aseptic operating-room technic in all forms of peroral endoscopy, w'hile much ridiculed at the time, has come to be recognized everywhere as quite essential in a procedure which necessarily fre(|uently comes in contact with tuberculosis, pneumonia, diphtheria, erysipelas, lues and other in- fectious diseases and pyogenic infections. It is a matter of great grat- ification to the author that in fifty examinations of swabs used for wiping secretions from the bronchi, in no instance was there found any trace of such epithelial cells or of such forms of bacteria as would prove that the instruments had been in any way contaminated by contact with the mouth. This is worthy of note in connection with the obtaining of inoculation material for the production of autogenous vaccines in cases of chronic bronchitis, etc. As before pointed out (Bib. 2(i9), it is necessary to remember that though the field cannot be sterilized, yet the patient is more or less im- mune to the organisms that he, himself, harbors, while he may be ex- tremely susceptible to organisms introduced from another source, even though such newly-introduced organisms mav be morphologically the same. Bacteria from the patient's own skin and hair come under the class of foreign organisms wdien introduced into the lungs or into the blood and lymph channels in operative work. The only way to be cer- tain of avoiding the introduction of ])athogenic organisms from a previ- ous patient, or from any other source, is to carry out all the details of aseptic operative technic. Then if a patient gets pnemnonia or any other infection the operator has all the comfort of a clear conscience. A mask should always be worn by the operator to protect both the patient and himself from infections that either may unknowingly have. It is not pleasant to have even uninfective secretions coughed in one's face. Large plane protective spectacles should be worn over the o])erator's eyes it he does not rccjnire corrective lenses. The patient should be covered with a sterile gown, and a cap coming down to the shoulders with a hole in it corresponding in position to the mouth, but larger: about ID cm. in diameter. Assistants, even the one who holds the head, and also INSTRUMKNTS. 4? the anesthetist, if one is needed, should put their hands through the same process of sterihzation as for any surgical operation. All of the sterile team should wear sterile caps. Instruments should be sterilized by boil- ing, except the lamps, light carriers, knives and scissors. These should be immersed in alcohol. Extra lamps should be sterilized so as to be ready if needed. Conducting cords may he wiped with alcohol, but it must be strong alcohol, because alcohol diluted with water may tem- porarily impair insulation. Conducting cords should be covered with close-fitting rubber tubing for cleanliness. LIST OF INSTRU.MliXTS. The following list, given as a convenient basis for equipment, has been listed from the author's armamentarium. The essentials for ordi- nary work are marked with an asterisk. Bougies, dilators and the like are not so marked because they are not emergency instruments ; though they are essential to the endoscopist who expects to deal with all kinds of cases. Special instruments may need to be devised for special cases. The instruments listed, unless names are mentioned, are of the author's design. These might not suit others, and it is better for the en- doscopist personally to examine and select instruments that appeal to him personally. Tubes: *1 direct laryngoscope for children. *1 direct laryngoscope for adults. *1 bronchoscope, I mm. x '.W cm., for children. *1 bronchoscope, 'i mm. x ;50 cm., for children. *1 bronchoscope. 7 mm. x 10 cm., for adults and older children. *1 bronchoscope, !• mm. x 40 cm., for adults. 1 esophageal speculimi for cliildren. 1 esophageal speculum for adults. *] esophagoscope, 7 mm. .x -J-") cin., fur ibildren. ( Slanted end. ) 1 esophagosco])e, fi mm. x \'> cm., for older children. *1 esophagoscope, 10 mm. x 'i'-i cm., for adults. (Slanted end.) Extra lamps. (At least 1 dozen.) Accessories : *1 bite block. McCready-McKee. *l Sajous laryngeal cotton forceps, long, full, curved. *1 as])irator and tubing for both i)ositivc and negative pressure. *ls sponge holders with long screw collar. *1 force])S, plain foreign body jaws with handle I") cm. and (>0 cm. 1 forceps, side curved, with handle 4.') cm. and (>0 cm. 48 INSTIU'.MlCKTS. I t'orce])s, with r()tati per cent alcohol have received general endorsement, .\rliticial dentures should be re- moved. Even if no anesthetic is to be used, the patient should he fasted for five hours if possible, even for direct laryngoscop)' in order to fore- stall vomiting. Except in emergency cases every patient should be gone over by an internist for organic disease in any form. I f an endolaryn- geal operation is needed by a nej^hritic, preparatory treatment may pre- vent laryngeal edema or (jther complications. Hemophilia should be thought of. It is (|uite common for the first symptom of an aortic aneurysm to be an imjiaired ]w\ver to swallow or the lodgment of a bolus of meat or other foreign body. If aneurysm is present and esoph- agoscopy is necessary, as it always is in foreign body cases, "to be forewarned is to be forearmed." I'ulmonary tuberculosis is often un- suspected in very young children. 'I'liere is great danger from tracheal pressure by an esophageal dixerticiiluni or dilatation distended with food : or the food may be regurgitated and aspirated into the larynx and trachea. Therefore, in all eso])liageal cases the eso])hagus shottld be eniptieil by regurgitation induced bv titillating the fauces with the finger alter swalkiwing a tumblerful of water, pressure on the neck, etc. .Aspiration will succeed in some cases. In others it is absolutely neces- sary to remo\e the fnod with the esophagoscope. If the aspirating tube becomes clogged b}' solid food, the method of swab aspiration mentioned under bronchoscopy will succeed. ( )f course there is usualU' no cough to aid, but the iii\iphiiit;u"\ ;iliilominal and thoracic compression helps. Should a patient arrive in a serious state of water-hunger, as explained under "t'onlraindicalions to Esoijhagoscojjy," the patient must be given w.'iter by hy])(j(lermoclysis and enteroclysis, as ]iart of the preparation and if necessary the endoscopy, except in dyspneic cases, must be de- layed until the danger of water-starvation is jiast. Every patient should be exannned by indirect, nnrior laryngo>cop\ as a prelimin;iry to peroral endoscojjy for any jjurpose whatsoever ; and it becomes doubly necessary in cases that are to be anesthetized as ex- l)lained in the beginning of the chapter on direct laryngoscopy. CHAPTER IV. Anesthesia for Peroral Endoscopy. While it is impossible to lay down any hard and fast rules for anes- thesia in tube work, yet the time has arrived when we may formulate a few general principles from which deviation can be made to suit the particular case or the operator's personal equation. The herein given rules were submitted by the author for discussion at a meeting of the American Laryngological Association.* In the very interesting and extensive discussion which followed, the conclusions were endorsed in the main. Particular emphasis was placed upon the statement that the personal equation of the operator and of the particular case should govern the question as to whether general, local, or no anesthetic at all is to be used. Total abolition of the cough-reflex should only be for short periods. The facile operator will do good work in many cases in spite of a mod- erate degree of cough. After a short period of tubal contact in bronchos- copy, coughing lessens and often practically ceases, especially in infants. Following the general rule in surgery, an anesthetic should never be used at all unless necessary ; never in greater quantity than the needed mini- mum. In general surgery, anesthesia is required for three purposes : (1) The obtunding of pain (reallv analgesia) ; (3) the abolition of re- flexes (relaxation), and (3) for psychic efTect (mainly abolition of ap- prehension). For peroral endoscopy, analgesia is not required, for the pain in careful work is exceedingly slight ; but anesthesia for the lessen- ing of the reflexes and for the lessening of the apprehension which in- tensifies the reflexes, is necessary under certain circumstances. These reflexes are manifested by spasmodic action of certain muscular systems, chiefly those of vomiturition and coughing. In so far as these may be excited by mucosal contact they may be controlled by local anesthesia alone ; for, of course, local anesthesia is purely and simply mucosal anes- •Proceedingrs Amer. Laryng:ol. .\ssociation. Ill 12. p. gs. ANESTHESIA I"()!< PERORAL ENDOSCOPY. 55 thesia. Muscular contractions, as well as pain, resulting from psychic mechanism, or traction upon tissues remote from the mucosa can only be controlled by deep general anesthesia, or to a less degree, by the con- trol of the patient's mental state by the personality of the operator. The degree of this control varies widely with the personal equation of the operator as well as of the patient. The operator who can keep his pa- tient free from apprehension and who can keep his patient's mind fixed on the task of breathing slowly, deeply, and regularly will get along without any anesthetic and do better work than another operator under profound general anesthesia. As Briinings has pointed out, the operator who is not sufficiently practiced to pass the tubes without general anes- thesia is not justified in using general anesthesia to overcome faults in technic. .Incstlit'sia for esophagoscopy. 1. For foreign bodies, no anes- thetic is needed in either adults or children, except in case of very large and shaqj foreign bodies, wherein the relaxation of the esophageal mus- culature, by deep general anesthesia, will obviate the trauma incident to the withdrawal of the intruder through a spasmodically constricted lumen. 2. In case of a sharp foreign liody threatening perforation, espe- cially open safety-pins, it is safer to abolish antiperistalsis by deep gen- eral anesthesia. .'!. In cases of suspected esophagismus and "cardiospasm," the spas- modic element can be entirely eliminated by deep general anesthesia. 4. In case of large foreign bodies, general anesthesia adds enor- mously to the danger of respiratory arrest from pressure of the foreign body on the trachea and on the peripheral nervous respiratory mechanism. 5. The use of a general anesthetic will greatly lessen the need for skill in the introduction of the esophagoscope ; but such use is utterly un- justifiable. (i. Local anesthesia is needless for esophagoscopy. If used at all, it should be applied only to the laryngo-pharynx, never to the esophagus. .hnstliesia for direct laryngoscopy. 1. For diagnosis. In infants and children, no anesthetic whatever in any case. In adults who tolerate indirect laryngoscopy well, no anesthetic, general or local, is needed. 2. Foreign bodies. In infants and children, no anesthesia, general or local. .'i. P'or the removal of foreign bodies fnjm the larynx, both local and general anesthesia should be avoided, lest their application lead to dislodgment of the intruder. 4. For papillomata in children, no anesthetic, general or local, is needed. In adults, local anesthesia is usually necessary for accurate work in removing specimens or entire neo[)lasnis of any kind. 56 ANESTHESIA FOR PEKORAL ENDOSCUl'V. •J. In a few adults, intolerant and uncontrollable general excitability, and in some cases of hysteria a general anesthetic may be necessary for accurate work in the removal of laryngeal neoplasms ; but such cases are exceedingly rare. Oral bronchoscopy. 1. For diagnosis, in children, no anesthesia, general or local : in adults, local anesthesia of the trachea and bronchi, as well as of the larynx will be needed. 2. For foreign bodies in the trachea anil bronchi of infants and small children no anesthetic, general or local, is needed, except possibly in very complicated removals, such as in case of open safety-pins. For- eign bodies in the trachea and bronchi of adults can often be removed without any anesthesia, general or local ; but in most cases local anes- thesia is needed. General anesthesia is needed only in complicated cases where there is a stricture to dilate to reach the foreign body, or w'here the mechanical problem of removal is complex, or where the cough threatens to cause perforation. :'. For the after-treatment of stricture local anesthesia is sufficient, and in some cases none is needed, because tolerance to manipulation be- comes established after repeated passage of the instruments. Trachcotomic bronchoscopy. If lower bronchoscopy is ever justi- fiable, it is only so in cases with extremely severe dys])nea, and even in such cases the facile operator will slip in a bronchoscope, through which, with the aid of amyl nitrite and oxygen, artificial respiratory aid can be supplied with greater facility than through a tracheotomy wound. Should the bronchoscopist prefer tracheotomv it never need be done under gen- eral anesthesia : and in a dyspneic case general anesthesia is utterly un- justfiable because as soon as anesthesia begins, respiration ceases, owing to the loss of the aid of the accessory respiratory musculature. Cocaniza- tion of the trachea and bronchi may be used for trachcotomic bronchos- copy in adults ; no general anesthetic is necessary. General rules for local anesthesia. Anesthetic adjuncts, such as adrenalin, antipyrin. and \arious S3nthetic compounds, the author has never used; consequently, he cannot formulate any rules, even in a sug- gestive way, and he is compelled to rely upon Drs. Ingals. Coolidge, May- er, Alosher. W'inslow. Vankauer, Casselberry. and other eminent co- workers to supply the deficiency. Doubtless, adrenalin by the ischemia which it induces, increases anesthesia and also prolongs it bv slowing the carrying-away of the cocaine by the blood. I'.roniides in large doses, some hours beforehand, as suggested to the author by Dr. Frank D. Sanger, of Baltimore, have a marked effect in lessening cough re- Ilex and lessening the amount of cocaine needed. Morphine has this also, but its use is objectionable because of after-nausea: and in cases where ANESTIirSIA l-OR 1'|;KI)K.\I. K.NU0SC0I'\'. 01 repeated sittings arc necessary, there is risk of drug habit, lieruin is an adjunct useful in some cases. Xone of these antibechics should be used in such large doses as to abolish the cough-reflex for a long time be- cause, as the author has frequently pointed out. the cough-reflex is the watchdog of the lungs, (|uicl0 ANESTHESIA 1-OK PEKORAI. EiNDOSCUPY. such as the so-called "vagus reflex." Such arrest is, in liis opinion, al- ways due to occlusion of the air passages, for the following reasons. Respiratory arrest never occurs in work without anesthesia unless the air passages are occluded initil the jjatient asphyxiates. On the other hand, when apnea vera has occurred in the cases that have come to the writer's knowledge, it has always been under deep anesthesia, when, of all times, the patient should be less susceptible to reflex arrest of res- piration by presence of the endoscopic tube. Therefore, the author be- lieves that the occasionally given "vagus reflex'' as a cause of death in esophagoscopy or "laryngeal reflex" in bronchoscopy, are unwarranted by the facts. Angiomata, edematous polyps, and a few vascular growths will shrink so completely under cocaine as to render accurate removal impossible. When this is found to be the case a general anesthetic will be necessary. Small growths projecting from the ventricle in adults may be very readily hidden by the over-riding projection of the ventricular band. This projection is very much more pronounced under even thorough anesthetization by local means, so that unless extremely expert, the operator will require the use of general anesthesia, which has the eft'ecl of lessening very much the projection of the ventricular band. Esophagos- copy ujion the struggling, resistant patient whose pharyngoesophageal musculature is in a state of spasm, is, in the hands of the less skillful, not without risk unless care is exercised. The skillful esophagoscopist will do it without the slightest danger. The ordinary risks of anesthesia are very much enhanced by risks of respiratory arrest, be this from reflex inhibition or mechanical obstruction of the trachea from the bulk of the tube or of the foreign body or both, or from other causes. Spas- tic conditions of the hypo-pharyngeal and esophageal musculature, whether from the presence of a foreign bodv or other causes, are com- ])letely relaxed by general anesthesia. For esophagoscojiv the author would ad\ise, if any anesthesia is desired, ether insufflation with the Elsberg apparatus (Fig. 57 ) because it introduces an element of safety which has never ])ertained to esophagoscopy under general anesthesia before, except in the hands of the most skillful. As elsewhere men- tioned, there have been in the practice of various operators a numlier of deaths on the table from arrest of respiration during esophagosco]5v un- der general anesthesia. This occurred es])ecianv in foreign-bodv cases where the bulk of the tube and the Inilk oi the foreign body together com- liressed the trachea when the esophagoscope over-rode the foreign body. The author is not prepared to advocate the Elsberg anesthesia, or any oth- er method, to overcome the faults of technic in esophagoscopy ; but it cer- tainh insures safety, so far as respiratory arrest is concerned, to have ANESTiiKsiA loR PKuouAi, i:Nnnscopv. f)l a silk woven catheter in the traclica insnring the supplNini; of air to the hnigs. ami assuring the impossibiHty of complete obliteration of the tracheal lumen, for enough lumen must exist at both sides of the tube to permit the return-flow of air. The author does not hesitate to say to those who wish to use general anesthesia for esophagoscopy that a death on the table is practically impossible with ether insufflation. Of course, the presence of the catheter in the trachea would render possible trauma by the tube moutl;. but only liy the grossest technical faultiness. In man_\- cases of foreign body in the esophagus, the foreign body is [ircvented from going downward by muscular contractions. There- fore, if a general anesthetic is given, the relaxation of this clonic con- traction by the anesthetic permits the foreign body to escape downward. The author believes this to be one of the reasons whv it has so rarelv Fi(f. 57. Mlsljcrg apparatus for intratracheal iiisutTlation ether anesthesia. happened in the I'ittsburgh Clinic that a foreign body has been lost downward. In the absence of anesthesia, the ])rcsence of the tul)e ex- cites still greater spasmodic contractions of the esophageal wall and the foreign body is held all the more tightly, which gives the operator a good chance to approach it with the lube and seize it wilii the forceps. Out of 20(i cases, only S went down, and of these, only 3 went down after the commencement of the esophagoscopy. Of the :?, 2 were under general anesthesia, which leaves but a single case where a foreign body escaped dounw.inl during esophagoscopy witlunu anesthesia, general or local. In tlie l;ist loT bronchoscopies and esophagoscopies fur furcign bodies in children under (i years of age, done in the I'iltsburgh Clinic, no an- esthetic, general or local, has been used. .\ number of adolescent and adult cases \v,\\v been done also without anesthesia, general or local. fi2 ANESTHESIA FOR PERORAL ENDOSCOPY. Ten of the cases have been in the children of physicians, every one of whom expressed his delight that no anesthetic was used, and in each instance the physician was present at the removal of the foreign body from his own child. Surely this is the best evidence that there is no very severe ordeal connected with bronchoscopy and esophagoscopy with- out anesthesia. There is no question in ihe author's mind but that all forms of anesthesia, general or local, introduce a great element of dan- ger to the handling of foreign-body cases in children, more especially when chloroform is used. In adults, with ether, the risk in cases free from dyspnea is probably very slight. The ordinary risks of chloro- form anesthesia are enormously increased in esophagoscopy, for which chloroform is absolutely contra-indicated. The author has had one post-operative death from general anes- thesia in endoscopy. A man of 46 died about one week after direct laryngoscopy for the removal of a laryngeal neoplasm. There was a gangrenous bronchitis due to delayed chloroform poisoning. He had an old bronchial history. As he took ether badly, chloroform was substi- tuted. Not doing well with this, the anesthesia was abandoned, the operation being done without an anesthetic. As there was no instru- mentation whatever below the laryn.x, and as the death occurred a week after the laryngeal operation, the author cannot see that endoscopy can be blamed. It is the only death directly or indirectlv due to general anesthesia in the author's entire endoscopic experience. The only rea- son for using a general anesthetic was that the small growth was very vascular and edematous, hence, shrunk so as to be invisible when cocain- ized. The comparatively trixial nature of the growth rendered the oc- currence all the more distressing. The author had one toxic death from idiosj'ncrasy to cocaine in a child of 4 years. Death occurred after rhyth- mic convulsions three hours after removal of laryngeal Dapillomata for which an 8 per cent cocaine solution had been used. These two deaths both occurred in the early years of peroral endoscopy and led the author to develop to the utmost the means of working without anesthesia, and he was astonished at the utter Heedlessness of any anesthetic in children. As all opium derivatives have a toxic effect upon the respiratory center, their use in any case in which chloroform is expected to be given is distinctly contra-indicated lest the synergistic toxic effect cause re- spiratory arrest. If the endoscopist insists on their use, he should be prepared promptly to apply bronchoscopic oxygen insufflation, for ordi- nary artificial respiration is illogical and useless when the respiratory center is paralyzed with drugs. As children are particularly susceptible to the action of opium derivatives, the danger is particularly great, and there is very good evidence to show that some of the unexplained deaths ANESTHESIA FOR I'KROKAI, ENDOSCOPY. 63 after hronchoscopy, which, by the way, always have occurred in cases in which an anesthetic had been given, were probably due to paralysis of the respiratory center by the combined toxic action of the chloroform with morphine or with codein. Atropin counteracts the effect of mor- phine to some extent in this direction, but it would seem that to give chloroform, codeine, cocaine, adrenalin, morphine and atropine is loading up the organism with a great many drugs. In the case of children it is an utterly needless lot of drugs, as any one will admit who has seen bronchoscopy in children without anesthesia, general or local. In ado- lescents, morphine may be used in conjunction with ether or the usual Fig. 58. Schema illustrating the method of hyoid bone elevation to free the air passages during general anesthesia. morphine and atropine hyjiodcrmic combination may be tised, though in uncomjjlicated cases no anesthetic is necessary. In adults this combina- tion is useful especially in difficult foreign-body cases. The use of atropine as advocated by Ingals to lessen secretions during bronchoscopy, not only checks secretions but is a valuable stimulant to both the cardiac and respiratory centers, so that it would seem to be advantageous from a number of points of view. The safety of scopolamine is unproven. When using general anesthesia and the patient does not take it well, the best thing to do is promptly to insert a silk-woven catheter and 04 ANESTHESIA FOR PERORAL ENDOSCOPY. proceed witli the anesthesia by ether insufflation with th.e Elsberg or similar apparatus. If for any reason this is considered undesirable or the apparatus is not at hand, the breathing may be promptly cleared by hyoid-bone elevation, using either the direct laryngoscope or the fore- finger. Fig. ."jS, as described by Dr. Ellen J. Patterson (I!ib. 42!0, the head being forced into extreme extension. This extension of itself will usually clear the airway as shown by Hobart A. Hare. An interesting case of tracheal obstruction by an aneurysmal com- pression, plus a small mass of mucus is reported by Pratt (Uib. -iSG). During anesthesia the patient became cyanotic in spite of violent respira- tory^ muscular activity. Insertion of an intratracheal tube gave immediate relief. No case of paralysis of the larynx, even if only monolateral, should be given a general anesthetic except by intratracheal insufflation. If this cannot be arranged, the patient sliould be tracheotomized. Hence, every adult patient should be examined with the throat mirror before anesthesia, and the necessity becomes doubly imperative before goitre operations. A number of fatalities have occurred from neglect of this precaution. Da\is reports the use of the intra-muscular injection of ether into the buttock of a child primarily rendered unconscious by ethylchlorid. Joseph A. Stucky and William Stuckv have used rectal ether anes- thesia with excellent results. ADDITIONAL NOTES ON LOCAL ANESTHESIA. If local anesthesia be used in children, the author urges care and gentleness in its application especially to the subglottic region of children. For direct laryngoscopy in adults, some endoscopists have proposed in- jecting an anesthetic solution with a syringe armed with a hypodermic needle into the laryngeal tissue. This the author believes to be unneces- sary as contact anesthesia will suffice for all cases if the patient's eyes are covered and the operator can get the patient to fix his attention on deep breathing. Some very apprehensive patients will anticipate cough at the contact of the instrument and will cough semi-voluntarily in the absence of a true reflex, if they are allowed to see the instrument enter through the speculum. If it is desired to anesthetize locally for esophagos- copy the best method is to make a preliminary application of an S per cent solution over the epiglottis and into the larj'ngopharynx with cotton on the Sajous' applicator. Then either the laryngeal or the esophageal speculum is passed and the right pyriform sinus is swabbed once with a 20 per cent solution on a gauze sponge held in a straight sponge-holder and allowed to remain for about a minute. Examination mav begin one minute later. Cocaine tablets may be sterilized by placing a formalde- hyde pastille in the bottom of a bottle in which the tablets are kept. ANF.STHKSIA TOR l'i:i;OKAl. KNDOSCOPY. C5 . hiestlicsia for the use of the esopliojieal speculiiiii. \utv llie use of the eso])li;igeal speculum, local anesthesia is not necessary, but lessens the slight discomfort. General anesthesia is not necessary, l)ut if deep, affords a very much licttcr \ie\v of the ujjper end of the esophagus be- cause it prevents spasm of the inferior constrictor and of the esophageal musculature in general. Tlie autiior's custom, however, is to use no anesthesia, general or local, in cither adults or children. l'"or local anesthetization, the method just given for esophagoscopy may be used. For gastroseopy, no anesthetic, general or local, is needed to enable the skillful esophagoscopist to put the gastroscope into the stomach ; but once there, in the absence of the complete rela.xation of general anesthesia, the gastroscope remains fixed because of the muscular activity of the diaphragmatic musculature. To gain full relaxation of this musculature and of the abdominal wall, in order that the gastroscope mav be freely movable, jirofound anesthesia is esscnti;d. Intratracheal ether insuti'la- tion is most convenient. .\n'Kstiii:tizix(', a traciii;ot().mizi;i) i'.\tiknt. Xo hesitation need be felt in gi\ing a general anesthetic to a trache- otomized patient so far as the tracheotomic wound is concerned. Such a patient is far safer than one not tracheotomized and there is no trouble with the tongue or the tissues attached to the hyoid bone falling back- ward and downward obstructing breathing. They take the anesthetic quietly. It has been necessary many times for Dr. I'aiterson to remove tonsils from patients under treatment for laryngeal stenosis. In every instance the patient went under ether (|uietly and was kept fully under until the operation was completed, all \c5sels twisted and oozing stop])ed. The technic is simjile. .\ fold of gauze is laid o\er the tracheotomy cannula and. if the laryngeal stenosis is not complete, another over the mouth. The etlier is dropped upon both pieces so tli;il no matter which way air is taken in, it carries the ether with it. It is necessary to see that a good stout tape is securely attached to the cannula and tied back of the neck in the regular way. One assistant or nurse trained to tracheal work should be stationed to give undivided attention to th.c c.innnla ;ind secretions coming from it. INSUFFLATION ANKSTIIKSIA. The experiments of Melzer and .Auer and the developments bv hlls- berg, janeway. Carrel. Ouinby, Cotton, Robinson, and others have placed intratracheal insufflation anesthesia on ;i tlrm. scientific and practical basis. Tli\rotom\ can be readilv done under local anesthesia bv those who fullv 66 ANESTHKSIA FOR PF.ROKAI, EXDOSCOPY. understand the technic of infiltration. Much time, however, will be saved by insufflation anesthesia ; and the strong return-flow keeps the blood and secretions from gaining an entrance to the lower air-passages. This return-flow is in ever\- way more advantageous for the purpose than the use of the tampon cannula, the Trendelenberg position, or even the excellent plan of JMoure, using the ordinary cannula with a gauze tampon in place above the cannula. It is surprising how little room the insufflation catheter introduced through the mouth requires in the opened lan,nx. It lies close along the posterior wall in a region which it is not necessary to invade, because thyrotomy is apt to be unsuccessful in Fig. sg. Insufflation ether anesthesia with the Elsberg apparatus in the clinic of Dr. Otto C. Gaub. The anesthetist, Dr. Wade Elphinstone, has exposed the larynx and is about to introduce the silk woven catheter in a case of head surgery. Note the full extension with the head on the table. malignancy if the involvement has reached the party wall. Should it be necessary in benign conditions to operate upon this wall, it is very easy to displace the catheter sideways. In malignant cases, if it is found that the growth is not removable by thyrotomy and that a laryngectomy is necessary, it is very easy, after amputating the trachea, to insert the insufflation catheter into the cut-end of the trachea and thus earn,- out a complete laryngectomy with the anesthetist entirely out of the way and with no loss of time. Dr. Otto C. Gaub and Dr. W. P. Barndollar have ANESTHKSIA J-OR PERORAI, l-.NDOSCOPY. G7 demoiistratt'd the great advantage of the intratracheal insulllation method of anesthesia in the extirpation of a nasopharyngeal fibroma, which was so large that it pressed the soft palate forward on the tongue and pro- duced dangerous dyspnea. Tf to this had been added the free flow of blood usual in such cases, the i)atient would have been asphyxiated. On the contrary, in this case, from the moment the insufflation was started the patient's color was good. All blood and clots came back out of the mouth and the operation required only a few minutes because it was un- interrupted. The presence of the catheter in the mouth produced no in- convenience whatever. The day of tracheotomy preliminary to the extir- pation of nasopharyngeal fibromata is past. In all prolonged, bloody, nasal. ])haryngeai. buccal, and laryngeal operations insufflation ether an- esthesia diminishes the time of operation at least three-fourths. In aural, ophthalmic, and all forms of general head and neck surgery the distant removal of the anesthetist from the field is not only a time-saving convenience, but it eliminates a serious infective risk. In general sur- gical operations requiring a jirone jiosition of the patient, insufflation an- esthesia is ideal. In the short, thick-necked, alcoholic "full-blooded'' type of patient that ordinarily behaves so badly under ether by the open method, insufflation anesthesia gives a quiet and perfect anesthesia impos- sible by any other means. All the foregoing classes of cases are jjarticularly the sphere of in- sufflation anesthesia ; but it is an ideal method for anesthesia in any sort of case, because of its safety and its precision and minimization of dosage, Meltzer refers to the mouth, pharynx, larynx, and trachea as the "death space,"' a particularly expressive term, for there can be no doubt what- ever that most of the deaths from anesthesia have been due, directly or indirectly, to purely mechanical obstruction in these regions. In re- suscitation from respiratory arrest, or collapse, or cardiac failure, it is tliis '"death space" which is hardest to fight because of the difficulty oi kee[)ing up artificial res])irati()n in a good and efficient way in the flabby state in which the tt)ngue and all the tissues attached to the hyoid bone are. at such times. Some sort of artificial airway is essential. In in- sulllation anestliesia the "death space" is entirely eliminated and acci- dents presented. In regard to the efTect on the mucosa of the air pas- sages, ihc .lutluir is .ible to state from post-anesthetic laryngoscopy in so cases that there is no reaction in the larynx from the ])resence of the insufflation tube, even in a jirolonged anesthesia by insufflation. In quite a luunbcr of the cases anestlu-ti/ed by the (irdinary open mclhix] there has been quite a great deal of local laryngeal reaction, probably froiu ether mucus bubbling back and forth in the lar\-nx. so that from an ob- ser\a1ion of these 80 cases the .lutlmr is prepared to s.-iy that there is 68 ANKSTIIESIA FOR PEKORAL ENDOSCOPY. less irritation of the lar}'nx from an intra-traciieal insufflation than from an anesthesia of corresponding duration bv the open method. In the mucosa of the trachea and bronchi in sixteen cases there was less mucosal reddening, and not nearly as much mucus as is usually seen in patients etherized by the open method. Bronchoscopic observations of the author have proven that the "ether mucus" of the ordinary open method of ad- ministration is from the salivary glands and not from the tracheo-bron- chial mucosa. True, patients etherized by the open method are found to have their trachea and bronchi full of mucus, but it has been aspirated from above o\\ing to abolition of the cough-reflex. The management of the apparatus varies so much with the form of apparatus, and the apparatus have become so numerous, that the technical manage- ment of each cannot be given here. Explicit directions reprinted from the writings of the surgeons who have devised the instruments are sup- plied by the makers. The dosage is regulated according to the effect on pulse respiration, reflexes, color of skin, etc., as in any other method of administration. The great difference, however, is the quickness of response to increase, diminution, or withdrawal of the ether-content of the insufflated air. The anesthesia can be deepened, shallowed, or the patient brought out with a promptness and precision that seems incred- ible to those accustomed to the slow response inevitable with other meth- ods in all of which control is befogged by the unknown and unknowable residual ether-content of the air and food passages. \\'ith insufflation there is no fluid ether anywhere in the body, except that already absorbed into the blood, and as soon as the ether is shut oiT, the warmed air-cur- rent blows out the ether-vapor from the air passages. The author's first experience with insufflation anesthesia was with the insufflation attach- ment to the bronchoscope (Fig. K) suggested to the author by Dr. T. Drysdale Buchanan. (Bib. 22!)). This was for the insufflation of chloro- form during bronchoscopy and was intended simply to carry on anesthesia without interruption of the work through the bronchoscope, for which purpose it is ideal. It was not intended for a method of anesthesia for other procedures. Tcchnic of insertion of intnitraclical insufflation tubes.* Practical- ly all authorities are now agreed that the larynx should lie inspected be- fore the insertion of the insufflation catheter or tube, for the purpose of ascertaining whether or not there is disease present in the larynx, and also to determine the size of the larynx, so that the size of the insufflation tube may be selected accordingly, in order to make sure that there is an ample laryngeal lumen around the tube for the return-flow. Not only *This section contains liberal (luotations from the author's romniunication to the riinical Congress of Surgeons of North America. Nov.. 1313 (Bib. 2G6). ANESTHESIA rOK PEUOKAI. i:xnnS0OPY. 69 do the sizes of the hirynges vary in normal incH\ ichials, but the laryngeal lumen may be modified by lesions present or ])ast. There is another reason why the larynx should be inspected ; namely, throughout the whole category of diseases to which human flesh is heir, it is a frequent thing for patients to date comi)laints from some particular period, accident or operation in cases in which the physician or surgeon is absolutely cer- tain tJiat the disease existed long before the incident blamed by the patient. In view of this, it Iiehooves the surgeon to know whether the larynx is diseased or not at the time liie insufllation catheter is inserted. ( )ne such case has occurred where the patient dated laryngeal trouble from the taking of an anesthetic given by the ordinary open method. The ;iuthor's own case-records and sketches showed that the lar\nx had been the seat of an infiltration of tuberculous origin for years before the anesthetic was given, showing that the anesthesia was in no way re- sponsible, and showing, also, the necessity of knowing the state of the larynx beforehand. Only one thing seems to deter anyone from using the method advocated by Elsl)erg of insjiecting the larynx and passing the catheter or tube by sight. This is the lack of confidence in the abilitN' promptly and skillfully to expose the larynx with the laryngeal speculun^ Xo one cai)able of gi\ing an anesthetic should hesitate for one moment abiiut this procedure, if he will take the trouble to pay attention to a tew ])oints. Rt"I.i;S FOR INSi:RTinX ni' IXSfl'FI.ATION ANlCSTlt ICSI.V. 1 . The patient should be fully under the anesthetic by the open method so as to get full relaxation of the muscles of the neck. ■-'. The patient's liead must be in full extension with the verte.x lirmiy pushed down toward the feet of the patient, so as to throw the neck ui)ward and bring the occi[iut down as close as possible bencith the cervical vertebrae. '■'>. Xo gag should be used, because tlie i)atieiit should be sunicienlly anesthetized not to need a gag, .ind because wide gagging defeats the ex- posure of the laryn.x by jamming down the mandible. 4. The cjjiglottis must be identified l)efore it is passed. 5. The S])eculum must pass sufficiently far below the lip of tlu- epi- glottis so that the latter will not slip. (!. Too dee]) insertion must be avoided, as in this case the speculum goes jjosteiior to the cricoid, and the cricoid is lifted, exposing the nujulh of the esophagus, which is bewildering until sufiicient education oi the eye enables the operator to recognize the landmarks. The most important thing of all is the position of the patient, ,-uicl next to that comes recognition of the epiglottis, and next the proper mo- tion of lifting the hyoid bone to expose the larynx. 70 ANESTHESIA FOR PKRORAI, ENDOSCOPY. The correct position will be understood by reference to the illus- trations. In Fig. GO, the patient is placed on a pillow in a natural posi- tion. The larynx can readilv be examined in this position, if it is de- sired merely to inspect it, and is useful for laryngeal diagnosis and some endolaryngeal oi1 ) on the forehead of the patient with the hands at the sides of the head and then force the forehead vigor- ously downward and backward, causing an anterior movement of the ANESTHESIA TOR I'KKOKAI, KXDOSCOPY. 71 skull nil the atlas and throw inj; all the eerxical vertebrae forward (upward in the reeumhent position). The effect of this is to throw the liyoid bone and all the tissues of the neck, including the larynx, high up and to ele- vate the tongue. The neck and shoulders are arched up away from the table. In a fully relaxed [)atient. it is not necessary for an assistant to steady the head in this position, while the anesthetist takes the speculum always in the left hand, his right index being used to ])ull the upper lip of the patient out of the way so that the li]) will not be pinched between the speculum and the upper teeth. The spatular end of the speculum is now inserted posteriorly to the tongue over the dorsum of which it is passed until the epiglottis comes into view. The spatular end is made to pass posteriorlv to the tip of the epiglottis, and inserting the speculum a distance of, on the average, about 1 cm., the hyoid bone and all of the attached tissues are lifted by a motion which is best expressed as the suspension of the head of the patient on the epiglottis by the tip of the spatular end of the laryngeal speculum. Great care is necessary at this point not to use the upper teeth as a fulcrum upon which to pry upward with the tip. The motion is rather the lifting of the epiglottis and es- pecially the hyoid bone by the tip of the instrument just as if it were desired to lift the patient's neck upward. Hyoid bone elevation opens the laryngeal door. After the larynx is exposed, the right hand releases the upper lip, which is now safe, and the catheter of the desired size is handed to the anesthestist by the nurse and the introduction is simple and easy, because the trachea is in a straight line with the laryngeal spec- ulum. This is the great advantage of the extended position with the head on the table. At first sight, it might be thought that the speculum, as shown in Fig. tiS, could not be in line with the axis of the trachea. It seems to be the erroneous conception quite prevalent among the profes- sion that the trachea is peri)endicular in the neck and chest. .\s a matter of fact, it enters the chest in a direction backward as well as downward. as illustrated schematically in Fig. 64, so that in the extended position I)ro])er for the exposure of the larynx and the insertion of anv sort of tube into the trachea, the axis of the speculum, as shown in h'ig. (!2, is I)recisely in line. This must be remembered in placing the patient in position, but for the insertion of the speculum it is well to forget it and remember only that the motion is a strong lifting of the //'/' of the sj)eculum, as shown in Fig. (1"^. In some patients after the introduction of the catheter there may be a large amoinit of thick tenacious secretion enter the catheler which may occlude respiration through the catheter, so that the hand held in front of it does not receive the exjiiratorv blast, leading to the impression that the catheter is not in the trachea. If there is any doubt on this point it is better to insert the specuhun and to lift 72 ANESTHESIA FOR PERORAL ENDOSCOPY. the epiglottis and note particularly that the arytenoid eminences are posterior to the catheter. Oi course in cases in which the patient is not deeply anestlietized cough will free the catheter but when the cough-re- tlex is abolished the ]iatient will breathe on each side of the occluded catheter through the lumen of which no air will emerge at ordinary resoiratory pressure. If occluded a fresh catheter may be substituted, but in most instances probably no harm whatever would come from inserting the nozzle of the insufflation apparatus and proceeding with the insuffla- tion anesthesia in the regular way. because the catheter will be blown clear by the insufflation pressure and brought out liy the return flow. The reason why the expiratory current does not clear it is that there is so much room for expiratory air around the catheter that there is very little pressure on the secretion in the catheter. The author recently in- sufflated a patient with bilateral laryngeal paralysis. He put in an extra tube for the return-flow but found it quite unnecessary, for, even with the tracheotomic wound closed with the finger, there was ample return- flow between the flaccid cords which flapped in the breeze of the return- current. He had feared that in the absence of the inspiratory abducting excursion there might be some obstruction in the larynx and the tracheo- tomic wound was obstructed witli granulations. For the introduction of insufflation tubes the side-opening laryngoscope (Fig. 1')) has some ad- \'antages. After the catheter is inserted, the laryngoscope may be re- moved sideways tlimugh the lateral opening. After skill in direct laryn- goscopy is acquired, the slide may be left ot¥ entirely, but at first one is apt to he troubled by the tongue curling in and obstructing the view. This is [irevented by passing the speculum to the riglit of the tongue, thus lea\ing the tongue on the closed side of the speculum. The author's per- sonal preference is for the regular laryngosco])e. Fig. 14. ^lention is made above of deep anesthesia. ( )nce the knack is ac- (|uired no anesthetic whatever, general or local, is needed to expose the larynx in any patient ; btit to the beginner it simplifies the acquiring of the knack of direct laryngoscopy to abolish the reflexes of vomiturition and coughing, and to abolish entirely the antagonism of certain muscles attached to the hyoid bone. In the author's clinic an anesthetic, general or local, is never used for direct laryngoscopy, bronchoscopy or esophagos- copy in any child under (i years of age, and rarely in adults, except for a few special procedures ; but for insufflation anesthesia, the jiatient may as well be jiut comjiletely under by the open method as only partially. To cocainize the larynx for the insertion of an insufflation tube to help along in partial anesthesia is an utterly needless waste of lime. CHAPTER V. Bronchospic Oxygen Insufflation. Broiichoscopic oxygen insiifllatiuit. Some experiments made upon the clog by Dr. Otto C. ("lauh, with the assistance of the author, showed clearly that the lunt; which ordinaril}' collapses when the pleural cavity is opened may he intlated with oxygen, deflated or held ])artiallv inflated, by the hronchoscojjist at the command of the surgeon. Oxygen can be admitted to the unoperated lung and a constant return-flow maintained so that the \ilal pulmonar\ hemic changes go on normally and pleural shock is also lessened. Fiu'thermore. the lung on the ojjerated side can be allowed to collajise without danger to the patient, thus allowing the surgeon ample room for work with the hands and instriuuents within the thorax. Again, indejiendent of inilation and deflation a constant supply of oxygen is kejit streaming through the lungs supplying every need, as shown by the ])ink color of the blood. Tiie usefulness of this procedure so far as thoracotomy is concerned has disappeared since the method of intratracheal insufflation anesthesia has been introduced by Melzer and .\ner and developed by Elsberg, Janeway and others; but for the liron- choscopist, the bronchoscoi)ic oxygen insufllation is a life-saving pro- cedure always at immediate command. The method is simple and is shown .schematically in Fig. 63. The bronchoscope preferably of small size ( T nmi. for adults, 4 mm. for children) is inserted through the glot- tis, 'i'he tube from the oxygen tank is attached to the anesthesia-inlet of the bronchoscope and the oxygen turned on at the tank \al\c (V). There is no danger from over-pressure because the bronchoscope is open. The operator's thumb (T) must never be placed over the proximal open- ing of the bronchoscope, because of the danger of over-jjressurc. The fundamental law which nuist be constantly before the luind is that of C'rile. In brief, the intra])ulmonary pressure must not exceed the capil- lary lilooil pressure or the compression of the capillaries and consequent ischemia will prove fatal. This cannot occur if the orifice of the broncho- scope is open because there is such an ample return-flow through the 74 BRONCHOSCOPIC OXYCEN INSUFFLATION. lironclioscopic lumen that absolute safety from over-pressure is assured. Of course tlie lungs cannot be thus forcibly inflated, and the usual arm- motion artificial respiration must be used in addition in this form of bronchoscopic oxygen insulHation. But the bronchoscope establishes an artificial airway which is stronglv charged with oxygen and which can- not be obstructed by dropping back of the tongue. A small esophago- scope may be used instead of the bronchoscope, the oxygen tubing from the tank being attached to the drainage outlet. The drainage canal will thus carry oxygen right down to the bifurcation. Nitrite of amyl pearls should be carried in every bronchoscope box as amyl nitrite is the most Fig. 63. Schema showing bronchoscopic oxygen insufflation. The broncho- scope is in the trachea. Oxygen enters by the small branch tube and is taken in by natural or artificial respiratory movements. If an esophagoscope is used the oxygen can be blown in through the auxilliary drainage canal to the distal end of the esophagoscope. This is safe. The lungs could be inflated by momentarily clos- ing the escape by putting the thumb, T, over the proximal end of the bronchoscope alternately releasing it, but this would be a very dangerous procedure unless over- pressure be carefully guarded against. If preferred, the independent drainage tube used for aspiration can be inserted through the bronchoscope. promptly available stimulant in such cases. A pearl may be broken in a tuft of cotton and thrown, cotton and all, into the wash bottle of the oxygen tank. There is only from two to three minutes between the respiratory and the cardiac arrest, so that in cases of serious respiratory arrest in which the operator does not feel confidence in the promptness and certainty of his bronchoscopic introductory technic, it is far safer to do an emergency tracheotomy, dilate the wound, crack an amyl nitrite pearl in cotton, hold the cotton over the wound and blow oxygen past the cotton into the trachea, while an assistant performs artificial respir- ation. In this case it is necessary for the operator to stand at the head- BKOXCnOSCOI'IC OXVGEX INSUFFLATION. 75 end of the table facing the patient's feet so as not to interfere with the arm movements. The great drawback to machines for artificial respira- tion using masks is that the vocal cords, because of their shape, else- were shown, have a natural tendency to be forced shut l>y the in-going blast, and because of the pharyngo-laryngo-faucial danger-zone. The latter can be overcome to a great extent, in using the mask, but the laryn- geal closure cannot. I'oth danger-zones are very much increased by the flaccid condition of the parts in impending death from res- piratory arrest; but this same flaccidity is a great advantage in the peroral insertion of a bronchoscope because of the associated total absence of spasm. When a tube is inserted into the trachea for the insufflation of oxygen, conditions are ideal because there is no obstruction to the return- flow such as there is to the in-flow. This does not mean that there is no danger from excessive plus pressure, which must be carefully guarded against : nor should any of the foregoing be taken as a criticism of ma- chines of pulmotor type. Such machines are life-savers of the greatest value, because they can be used by anyone with but little instruction, without the training necessary for the insertion of an intratracheal tube. Vet this does not alter the fact that intratracheal oxygen insufflation is ideal anrl everv'one who has to deal with resjiiratory arrest should be taught the technic of laryngeal exposure for intratracheal insufllation, because the visual method is the only one which is certain under all cc)n- ditions. For instance, the author, in one of our hospitals was called into an adjoining operating room, where a surgeon and his assistants liairatian, then tracheal intubation by blind method. The mask method had given relief for a time but the patient had grad- ually become unconscious and cyanotic. The surgeon's assistant was an expert at blind intubation and could not understand his inability to in- tubate in this instance. The author took with him his larxngoscope and exposure of tlu' larynx revealed occlusion with a grayish mass which proved to be meat. Intratracheal oxygen insufflation after removal of the meat kept the man alive until he could be trusted to do his own breathing. The man was in a state of profound alcoholism when brought in from the gutter in front of the hospital and doubtless the meat had been vomited. That the respirator machine had forced the meat farther into the larynx is no criticism against the machine for the general run of cases; and the surgeon, had a lar\ngoscopist not been available, would have done a tracheotomy, with, doubtless, an equally happy result; yet this does not lessen the force of the lesson that in cases of respiratory arrest the fundamental rec|uirement is to see that the larynx is free from obstruction. If this laryngeal inspection required special aptitude the author would not feel like urging it so strongly; but anyone capable of 76 BKoxciuisconc oxyckn insufflation. dealing with rfS])iratory arrest at all can b\ practice acquire the ability to inspect any case, and the easiest of all cases is the one of respiratory arrest, because of the total absence of spasm. Such a patient is just like a cadaver and practice upon the cadaver is excellent training for this work. There is the same insertion of the direct laryngoscope and the raising and suspension of the limp head on the beak of the spatular end. the operator being in the standing position for a patient on a table, and kneeling on the floor, for a patient recumbent on the floor. Of course the cadaverous limpness and ashv blue-blackness of the mucosa does not conduce to the operator's equanimity, but the confidence in his ability promptly to expose and inspect the larynx and to catheterize the trachea, which comes with practice, will meet the emergency. Life-saving et^c- iency demands that every well-equipped hospital shall have at least one man trained for this emergency work. CHAPTER VI. Position of the Patient for Peroral Endoscopy. General considerations. The position of the patient varies with the age of the patient, the part to be examined, the purpose of the examina- tion and especially with the personal equation of the operator. J'rac- tically all jirocedurcs nf the laryngologist other than endoscopy are done "face to face" with the patient. When the patient is dorsally recumbent nil the interior anatomy seems strangely unfamiliar; and all the more so liecause the book illustrations, which uncnnsciousl_\- form the basis of mental [liclures. have never sliown the parts in this position. Jt is the effort of this l>ook to supply this need as to illustrations, and to en- courage otliers to practice diligcntlv to overcome tlie ])reference for the sitting position and for the exceedingly awkward lateral recumbent po- sition. Once the habit of working in the recumbent position has been ac(|uired, better work can Ije done in both adults and children because of the greater ease with which secretions and foreign bodies are removed unopposed by gravitx'. In children we have the added reason of greater controllability: not but that a child can be lu-ld as is usu;d ( ihough not necessarily desirable) for laryngeal intubation; but harm may l)e done if the child is not perfectly controlled. There is no upright control that comi)arcs with the fixity of the child held down on a well padded fiat table top. In dyspneic cases, should tracheotomy become necessary, the bronchoscope can be inserted for breathing, and tlien the child is all ready upon the t;il)le for tracheotomy. /;; children from every point of view, therefore, it is desirable, for e\ery form of peroral endoscopy, to use the dorsally recumbent position, which, if correctly posed, is much easier for both patient and o])eralor than the lateral. The lateral position lor bronchoscopy and esophagoscopw in cither adults or children, has found but little favor in America. Its onK- real advantage is the facility with \\bicli secretions (lr;iin Irum the lowenuost 78 POSITION OF THE PATIENT FOR PERORAL ENDOSCOPY. corner of the mouth. This can be accomphshed almost as well in the dorsal position with a wick of gauze hanging out over from the pharynx, the outer end the longer. If secretions are too thick to drain by capil- larity, the gauze is frequently replaced by a fresh piece. An aspirating drainage tube of metal (Fig. 24) connected with the author's esophagos- copic aspirator (Fig. 23) is hooked into the lowermost portion of the patient's mouth in bronchoscopy. This rids the mouth of secretions while the patient is in the dorsal position. One thing that has led some endoscopists to think that the lateral position is easier is that in the lat- eral position the operator does not so readily make the mistake of ex- tending the cervical spine instead of extending simply the head upon the atlas. If the operator should stand instead of crouch, in doing a peroral endoscopy upon a patient in the dorsal position, he would have the correct head-position of the patient. In foreign-bodx cases, whether in adults or children, no matter where the foreign body is located (even in the fauces or nasopharynx), the patient should always be recumbent, never erect, because in the erect position gravity works against the operator, and the foreign body may reach a deeper point in the air passages than it would in the recumbent position. This is particularlv true of foreign bodies in the larynx and pharynx, which should never be touched unless the patient is in the Trendelenberg position. Quite a large proportion of the foreign bodies in the bronchi that have been sent in to the author, were originally in the larynx, pharjnx. mouth or nasopharynx and fell down when displaced by the attempts of the operator, who first saw the case, to remove the intruder with the patient in the sitting position. in adults. For the diagnosis of laryngeal disease and for the re- moval of specimens, or of entire growths, by direct larv^ngoscopy under local anesthesia the sitting position of both patient and operator is the best. In the few cases in which a general anesthetic is needed for direct laryngoscopy the recumbent position is obligatory as wel! as advantag- eous. For bronchoscopy for diagnosis, which is practicallv always done under local anesthesia, the adult patient may be sitting. If there is much Secretion to be removed this is somewhat of a disadvantage, but with an active cough-reflex the secretion may be gotten rid of without difficulty, even in bronchiectatic and pulmonary abscess cases. The author's per- sonal preference in such cases is for recumbency. For bronchoscopy for foreign bodies in adults, as before mentioned, the recumbent position is always best. For esophagoscopy for diagnosis and treatment, with or without anesthesia, the author's preference is for the recumbent position. It has POSITION- OF THE PATIENT EOR PERORAI, ENDOSCOPY. 79 great advantages in dealing without interrui»tion with the secretions and food debris, so abundant in many cases, and the patient is much more controllable. When a start is made it is a waste of time to withdraw the tube because the patient has slid off the stool or is strangling with secretions which have overflowed into his larynx. General prineiples of all positions. The general principles of all useful positions are the same. The author was the first to call the atten- tion of endoscopists to the fact that the trachea and esophagus are not Fig. 64. Schematic ilhistrauon of normal position of the intra-thoracic trachea, and also of the entire trachea when the patient is in the correct position for peroral bronchoscopy, such as the original Kirstein position, or that shown in Fig. 70. When the head is thrown backward (as in the usual or in the Rose position) the anterior convexity of the cervical spine is transmitted to the trachea of which the axis is thus deviated. The correct position is produced in the recumbent patient by raising the head. The anterior deviation of the lower third of the esopliagus shows the anatomical basis for tlic autlior's "high-low'' position for esophagoscopy. (Figs. 140 to 152). perpendicular. Their long axis passes backward as well as downward following the general direction of the thoracic spine (Fig. (il). There- fore, if we throw the patient's head backwards we cause an anterior con- vexity of the cervical spine, and with it the esophagus and trachea, as shown in the radiograph. Fig. GG. The Rose position and the usual in- correctly ajijilied extended position make this extension tbroiighniu ihr entire cervical spine as shown in I'ig. GG. rendering peroral endoscopv so POSITION OF THE PATIKXT FOR PliRORAL EXDOSCOPV. Fig. 05. (orrect positiim ol the cervical spine for esopluiguscopy ami bron- choscopy. (Illustration reproduced from author's article, Jour. A. M. A., Sept. 25. igog). Fig. 66. Curved position of the cervical spine, with anterior convexity, in the Rose position, rendering esophagoscopy and bronchoscopy difficult or impossible. The devious course of the pharynx, laryn.x and trachea are plainly visible. The extension is incorrectly imparted to the whole cervical spine instead of only to the occipito-atloid joint. This is the usual and very faulty conception of the extended position. (Illustration reproduced from author's article. Jnur. A. M. A.. Sept. 23, 1909). POSITION (I'" THE PATIENT FOR PERORAI, ENDOSCOPY. 81 extremely dilhcull or impossible, as demonstrated by tbe author years ago (Bib. 23(1). Jn the correctly posed extended position the e.xten.sion is at the occipito-atloid joint, and the cervical spine is strongly inclined forward (upward in the recumbent position as shown in Fig. (!.")). If it is not desired to extend the head the cervical spine nevertheless remains Fig. 67. Lateral radiograph of a cliiUl ol 4 >i.'.ir.>, shuuiiij; llic normal direc- tion of the trachea. \ pale streak is seen extending backward as well as down- ward, ending at the foreign body in the right bronchus. There is a narrowing of this streak at the bifurcation, representing a llatlening in mi before backwards. Compare schema, Fig. 64. the s;une. W JK-tlur the head is flexed or extended or kenl niidwiiy. the fundament.-d [irinciple of all positions is the aiiteiidr placing of the cervical spine (I'ig. '>'"i). Sitliii(/ l^osituni of the adult l^tiliriit for direct lary)i(iosco['y. The orii,'inal jiosition of Kirstein descrii)ed by him 2U years ago, when he originated direct laryngoscopy, contained the essentials of the correct 82 POSITION OF TirK PATIKNT FOR PERORAL ENDOSCOPY. position ancl has been but sHghtl\- improxed upon. As it seems to have been forgotten, an illustration of it taken from an old instrument cata- logue is here reproduced (Fig. (iS). Alouret (Eiib. -lUU ) arrives at the necessary forward position of the head by having the patient sit astride of a narrow backed chair facing backwards with the pelvis as far toward tiie front edge of the chair as possible, the pehis being tilted forward toward the operator who is back of the chair as will be seen by referring to Fig. (i!i. The author's position for direct laryngoscopy upon the sitting patient under local anesthesia will Ije understood by reference to Fig. 70. This position is also u.sed occasionally for diagnostic bronchoscopies, never for esophagoscopies. Fig. 68. Kirstein poMtiuii hIikIi cmuains the essentials of the best position for direct laryngoscopy on the sitting patient. The extreme anterior displacement of the cervical spine with extension only at the occipito-atloid joint and avoidance of instrumental counterpressure on the upper teeth are fundamental. This illustration is reproduced from an old instrument catalogue. (1895) Bib. 323. The patient should be seated on a stool about :')ii cm. high. The operator sits upon a stool rather lower than shown in the illustration. The second assistant sits on a high stool back of the patient keeping the patient's head far forward toward the operator, extended or flexed as desired, usually extended as shown, but always forward. The assistant's knee at the back of the ])atient prevents the ])atient moving liackward, and. most imjiortant. ])revents the patient arching his spine backward. This assistant's right index-finger is used when necessary for making counterpressure externally by pulling the thyroid cartilage backward. The operator's knee against the patient's knee holds back the patient's hips. In exposing the larynx by direct laryngoscopy it is absolurcl_\- POSITION 01* THE PATir.XT I"OR PERORAL ENDOSCOPY. 83 essential for prompt work and especially for prompt recognition of landmarks that the head he held exactly in the anteroposterior vertical plane. In other words, neither the cervical spine nor the head should he permitted to rotate. The head may be in any position desired as to fle.xion or extension, but the fundamental instruction to the assistant who holds the head should be: "Prevent rotation of the head."' Fig. Cx). Position of Mourct. This lias llic :irI\aiitaKc tliat tlic patient's body cannot slide forward toward tlic operator wlicn the head is pulled forward. Prof. Mourct demonstrated that the position of the pelvis and dorsal spine arc important. Keciimhci'i f>ositwn for direct laryntioxcopy, hroiiclioscof'y and csof>li- agoscopy in adult patients. For the last eight years the author has used the IJoyce position for bronchoscopv and esophagosco])y and has found it to fulfill e\ery reijuirement. In the few adult ])atients rec|uiring general anesthesia for direct laryngoscopv it is also used. .\ full de- scription written h\ I)r. i'.iiyce is given in the earlier \iilunic. ( llih. 'i*>'K 1007.) Essentially the ])osition (Fig. 72) consists in having the pa- tient's head and ujjper jiart of his shoulders out in the air supjinrtcd by 84 POSITION OF THE PATIENT FOR PERORAL ENDOSCOPY. the second assistant's left hand, which in turn is supported on the as- sistant's left knee, the left foot being upon a stool whose top is about (52 cm. below the top of the table. All the extension and raising of the pa- tient's head is done with the left hand of the assistant whose thumb is on the patient's forehead, the fingers being under the occiput. The mo- tion is as if to tnclc the forehead back, down and under, while at the Fig. 70. Showing; the author's position of the operator, patient and assistant for direct laryngoscopy on adult patients under local anesthesia. The sitting posi- tion of the operator renders laryngeal exposure easy for patient and operator; whereas the usual standing position of the operator throws the patient into a pos- ture that renders laryngeal exposure difficult hesides throwing the trachea out of line The author prefers a lower stool as shown in Fig. 77. same time the neck, chin and whole head arc raised. The right hand is passed under to the far side (left) of the patient's mouth, the right index carrying the bite block. The right arm, however, usually car- ries but little weight, most of the extension and the very important prevention of rotation being done by the left hand. If the operator and assistant work together frequently they can do bronchoscopies without POSITION 01' THE PATIENT FOR Pl'.RORAE ENDOSCOPY. 85 loss of time and with a precision tliat cannot lie cc|iialle. This holding is only required with a terrified child es])ecially the first few times. Most children soon lose all fear and where necessarv Fifj, 73. Position of patient, assistant and two nurses to hold a child for di- rect laryngoscopy, bronchoscopy and esophagoscopy. The assistant holds the head in the Boyce position. The nurse on the patient's right holds the patient's wrists down on the table. The nurse on the left side of the patient holds down the pa- tient's knees. The operator is holding the direct laryngoscope. As soon as it is introduced the patient's head is raised al)ove the level of the table. to have repealed endoscopies they soon learn that the procedure is not painful and submit without being held. The author often has children of '■> and 1 years lie down on the table, open their mouths and wait for a speculum to be inserted and papillomata removed, time after time, without any holding whatever ex- cept the supjiort of the head iiy the second assistant. As in the sitting position of the patient, or.e of the most inipuriant things is strongly to im|)ress upon the mind of the assistant who holds the head that nc\er, under any circumstances is he tn iiermit the head tn 88 POSITION' OF THE PATIENT FOR PERORAL ENDOSCOPY. rotate. Tlie head must yield freely and follow the operator in the lateral or vertical plane, but it must never rotate on the axial bone or the cervical spine. Such rotation distorts the endo-anatomical land- marks and renders difficult the otherwise easy task of tinding the larynx or ])yriform sinuses, as the case may be. '"'U 7.3 \- -Author's position of the patient for tlie removal of foreign hodies from the larynx or from any of the upper air or food passages. If dislodged, the intnidir will not he aided by gravity to reacli a deeper lodgement. For the use of the esophageal speculum the patient may be placed cither in the sitting position as for laryngoscopy (Fig. 70), or in the recumbent positinn as for starting the introduction of the esoi)hagoscope f Fig. ";'■>). The author prefers the latter. CHAPTER VII. Direct Laryngoscopy. General considerations. Enthusiastic as he is in regard to the use- fulness of the direct method, for both diagnosis and treatment, the au- thor wishes to state at the outset that he examines every case by the indirect method first, if it is possible to make such an examination. The exceptions arc in infants and small children who cannot be examined by the mirror imless they are under a general anesthetic, and also an occa- sional case of great nrgcncy in adults. The field of llic two methods is entirely different. The presence of the tube excites reflexes which inter- fere with the detection of slight \ariations in mobility, unless anesthesia is profouiKJ, and then onlv resi)iratorv movements could he ])ri.-scnl. Of course, great facility enables one to overcome this drawback to some extent and also the disadvantage which comes from the increased ten- dency to distortion, owing to very slight lateral displacement of the tube or the tissues. Xe\ertheless it may be stated as a general rule that the direct method is not adapted to accurate determination of motile detects. One great advantage of the use of both methods in the same case, where- cver ])ossible, is that the view-point is entirely different, the one supple- menting the other. The view obtained in the mirror, ]\1, Fig. 7-i, is as if the observer's eye were at the vertex of the patient's head, represented by A In contrast to this, in the direct examination, the observer's eye is at D. W ere the tissues to be examined a plane horizontal surface, there would be practically no difference, but in examining a more or less funnel- shaped cavity, like the larynx, the difference of the point of view become? verv great, especially as to the position of growths down within the funnei (as for instance at the cord) in their relation to the uiijar l.nyngeal orifice. It will be easily understood from the schema. Fig. 71, that growths on the cords always give the appearance of Ijeing located nearer the pos- terior commissure than they actually are, and very much nearer than thev seem to be b\' the direct method. Another great difTercncc is that !)0 dirf.ct laryngoscopy. the direct method gives a better view of the anterior aspect of the pos- terior wall, H, of the larynx because the visual axis is more nearly per- pendicular to the surface. The indirect view of the posterior surface of the posterior wall can, of course, be very much increased by von Eicken's method of drawing the larynx forward so as to see the hypopharynx by D A Fig. 74. — Schema illustrating the difference between the views obtained by direct and by indirect laryngoscopy. The observer's visual axis at E, looking into the mirror, M, pets an image as if he were looking from a point back of the patient's head, .\. Looking thus, the image of a growth on the cord at C is seen just over the top of the arytenoid eminence to which it seetns very close, because almost in line. This schema also shows how the anterior surface of the po-Sterior wall at H, is in the line of vision by direct laryngoscopy and more or less hidden in some cases during indirect examination, by an apparent forward overhan.g of ihc liorder of the arytenoid eminence and the aryepiglottic fold. hypopharyngoscopy. The hypopharynx can also be viewed by putting the direct laryngoscope down back of the posterior wall at H, and draw- ing the entire larvnx forward. It is also worthy of note that the an- terior surface of the posterior wall can often be observed l>y the Killian method of using the laryngeal mirror with the i)atient standing and the DIRIXT LARYNGOSCOPY. 91 observer kneeling, the patients' head being bent forward and downward toward the observer. It may seem strange at this late day for anyone to advocate the more frequent use of the indirect, mirror larj'ngoscopy, and yet it is neglected in routine surgical work. The author believes that general anesthesia for any purpose should always be preceded by a preliminary examination of the laryn.x by the indirect method, provided the patient can be so examined ; and this statement applies to any and all cases, sur- gical or otherwise, for which an anesthetic is desired to be given. It is incomprehensible why it is so generally neglected before goitre opera- tions. If this rule were observed, there would not be as many myster- ious deaths on the table and shortly after operation to be accounted for by such highly hxpothetical diagnoses as hyperthymization, cardiac failure, etc. The author knows of a number of deaths on the table where paralysis of the larynx had existed unknown to the surgeon ; and a perusal of surgical literature reveals cases strongly suggestive of un- suspected laryngeal paralysis. When it comes to operations, however, the indirect method has no place in the author's technic. In making this statement, the author wishes to qualify it by saying that he does not pretend to have the fa- cility in indirect operating that is possessed liy man\- of the laryngolo- gists, who. by a lifetime of training, have acc|uiretl wonderful skill in working by the aid of the reversed image seen in the mirror. The skill of such men as Delavan, Semon, St. Clair 'J'homson, liryan, rrench, Cur- tis, McKernon, Simpson, Tilley, Dundas Grant. Moritz Schmidt and others in overcoming tlie disadvantage of being compelled to move a forceps backward when it is desired to bring it forward, and to make a diagonal movement by combining a reversed antero-posterior and a true lateral movement, is marvelous and probablv will not be e(|ualled b\' any future generation of laryngologists because there is not now the incentive to spend the lifetime at practice necessary to acquire the skill to work under the peculiar circumstances of having the antero-i)osterior movement reversed while the lateral movements are unchanged. This must not be taken, however, to mean that good work can be done by the direct method without a large amount of jiractice, nor that a superlative degree of skill cannot be acquired in the direct method. The same amount of work will produce equally marvelous results with the direct method as were accomplished by the indirect, and the results will be vastlv great- er because of the greater possibilities of the direct procedure. \'ery young children, because of their being intractable and terri- fied, are difficult cases for the mirror-method of indirect lar\ngoscopy, but in addition, as shown by Swain ( Hib. oOS), the epiglottis adds great- 92 DIRECT LARYNGOSCOPY. ly to tlie difficulty as compared to the adult epiglottis. Moreover, the child's epiglottis is prone to curl. In the direct method, on the other hand, we have a method by which the larynx of any infant or older child can be examined without any anesthesia, general or local. The erroneous statement that anesthesia is required has crept into the litera- ture, and has prevented the widest use of direct laryngoscopy for the diagnosis of the various causes of croupy cough in children too young for mirror inspection. Nearly all cases of papilloma and of unsuspected foreign body in the larynx have had diphtheria antitoxin given because it was supposed that the larynx could not be examined v\-ithout anes- thesia. Worse still, are the deaths from attempts to administer an alto- gether unnecessary general anesthetic to a child w-ith a stenosed larynx. In dyspneic cases, the possibility of retropharyngeal abscess must be borne in mind, and the posterior pharyngeal wall should always be carefully inspected before bronchoscopy. Of course, this can be done with the lingers by palpation, Iiut ihe most ready way is just habitually to note the condition of the posterior pharyngeal wall when introducing the direct laryngoscope. Contraindications to direct laryngoscopy. The author can recall no absolute contranidications to direct laryngoscopy in any cases where di- rect laryngoscopy is really needed for either diagnosis or treatment. In extremely dyspneic cases if the operator is not prompt and certain in his introduction of a bronchoscope it may be wise to do a tracheotomy first. The direct laryngoscopic appearances. The illustrations in this book may seem a little queer to those accustomed to the old indirect illustra- tion. The \iews in the sitting patient seem "upside down." Yet simply to re\erse an indirect view will not give a direct picture because the view point is different as already explained. The epiglottis does not show be- cause it is hidden by the direct laryngoscope. If the glottis is wideh open, the observer looks directly into the trachea in the direction of its long axis; and therefore does not see one tracheal wall any more than the other, if the head and neck of the patient are placed in the proper position. All the indirect illustrations represent the rings of the trachea showing below the glottis. If the patient gets his head too far backward (in the sitting position), the anterior wall may possibly be thus seen, because in such a position the observer's eye is back of the larynx and is in almost the same position with reference to the larynx as is the mirror in indirect laryngoscopy. This will be understood by referring to Fig. 74. But this is a very wrong position for direct laryn- goscopy, as elsewhere herein explained. When the patient is in the posi- tion shown in Fig. 70. the posterior wall of the trachea is more easilv seen tlian the anterior, though if the position is exactlv correct, neither DIRKCT LARYXGOSCOPV. 93 will be more conspicuous tlian the other, because the operator will be looking directly down in the tracheal axis. If the posterior wall is viewed, no rings will show because the posterior wall of the trachea is devoid of cartilage below the cricoid. Illustrations of the laryngeal image on mirror view have always been misleading. They are semidiagrammatic and lack depth. This is one of the things that contributes most to the disappointment of the be- ginner in direct larAiigoscoiJy. He never knew that the vocal cords were so deep. They are. in the adult, nearly :! cm. below the aryepiglottic folds, and not almost on a level with them as illustrations of indirect views have usuallv pictured them. \\'hen the beginner in endoscopy examines them directly, and still more when he first attempts to operate upon them, they seem almost hopelessly far away ; and to make matters worse they are quite likely to be obscured from time to time by spas- modic narrowings of the lumen by the false bands and even by the up- per orilice of the larynx posteriorly. The illustration. Fig, !•, Plate 1, gives some idea of the depth of the larynx because the hand stretches across near the level of the lop of the false bands. The reasons for the misconceptions as to the real depth of the cords are four: 1. Illustra- tions of the larynx are made from memory and are always more or less diagrammatic, i. The cords are the central point of interest and are unconsciously always strongly represented in the illustrations with a glistening whiteness that brings them right up to the nearest plane in the laryngoscopic picture. ;!, Text-book tradition has called them white so that white they are painted, it matters not whether they are ^ray, l^early, dark greenish gray, bituminous, yellowish pink, bluish pink, bright pink, or tinged by reflected light. The artist giving them their true color value would make them stand back at their true depth. But it takes a lifetime to train the artist's eye to see values, and it takes an- other lifetime to train the laryngologist to see laryngcs, Conse- quentl\- there are no artist-laryngologists, \. There is, owing to well-known o])tical laws, an actual foreshortening of the laryngeal image as seen in the laryngeal mirror. If anyone doubts the author's statement that the cords are rarely reallv white, let the doubter compare the whiteness of some cases of painlloma or of the while, grass-like projections sometimes seen in certain cases of malignancy, A good demonstration of the fore- shortening affect of the mirror is apparent in comparing the flat ribbon- like appearance of the cords, with their actual a[)pearance. This ribbon- like appearance is not so much in evidence with the direct method, and when the larynx is opened by ihyrolomy it is seen to have been an illu- sion. (See Figs, SI and -ISS). 91 DIRKCT LARYNGOSCOPY. Ill Studying the direct laryngoscopic image it must be remembered that tlie lary-nx, like the face, is full of muscles and is changing its ex- pression every moment. The laryngologist who sketches as accurately as he can will notice that no two sketches are exactly alike. The author has been criticised, by students who did not understand this, for repre- senting the same epiglottis or the same larynx differently at different times. It is only under the most profound anesthesia with abolition of all except the deep reflexes that wc see the glottic chink enlarge and diminish in perfect rhythm with the respiratory movement without ac- ccssor\- movements in any part. And even then symmetrv may be in- terfered with by distortive instrumental traction. Without anesthesia there is usually more or less spasmodic traction of the arytenoids, and the ventricular bands are \ery apt to close o\er the cords and to narrow Fk;. 75. — Direct laryngoscopic views local, partial or no anesthesia. A, epi- glottis. (It is often more curled than this.) First stage of direct laryngeal ex- posure. B, laryn.x exposed but orifice is narrowed by spasm. C, a moment later when orifice widens and .i;lottis opens on deep inspiration. D, posterior part of larynx as usually seen at beginning of third stage. This is more frequently seen than B. If the larynx should open it would be seen that a much larger portion of the glottis is visible than anticipated. the upper laryngeal orifice, so that no cords are visilile. This jiertains. to some extent, even under quite perfect local anesthesia. The picture is very apt to be as shown at D in Fig. 7~>. consisting of two rounded masses posteriorally with more or less showing of the rounded masses anteriorally, corresponding to the \entricular bands. If, however, the ])atient is commanded to keep on breathing and not to hold his breath, the lirst deep inspiration will open up the glottis and then the view should be as at C in Fig. 7."), except that it is not often that the begin- ner will be able to expose the anterior commissure as there shown. The field of vision at any particular moment appears much larger than the diameter of the tube, and the author has so drawn and painted it in the illustrations. The field actually is larger, the degree being de- pendent upon the distance of the obiect viewed from the distal end of the DIRKCT T.ARYXC.OSCOPV. d'i tul)c moulli as will he understood by reference to Fig. TG; but this fac- tor, of course, in a long tube of small lumen, is ver}' slight unless the object be very far from the distal tube-mouth. What contributes more to the apparently larger size of the field as compared to the tubal diameter is the general law of optics which explains why the farther away an object is from the eye, the smaller the image, and consequently the greater the area visible. Perspective contributes also the additional fact that the nearer the plane of a receding surface approaches the visual axis the greater the foreshortening, and the greater the foreshortening the greater the area visible. In plain language the nearer a surface ap- proaches to being seen on edge, the greater the area visible through an aperture of a certain size placed at a certain distance from the eye. Hence, in endoscopically \iewed surfaces close against the tube-mouth, and vertical to the axis of the tube, we see an area equivalent to that of the lumen of tin- tube niDUtli. whereas in \iewing surfaces receding in C B Fjg. 76, — Schema .sliouiiv^ one of the reasons why the endoscopic image always seems larger than the actual diameter of the tube tlirough which it is seen. This is most apparent with the direct laryngoscope. The field of vision is larger in pro- portion as the distance between the tube-month, A P., and the farther limit of the visible field, C D. increases. planes more or less approaching parallelism with the tubal axis we see areas ec|uivalent to many times the area of tubal aperture. Inslntctions to patients. I'.efore beginning endoscopy the patient should be told that he will feel a very disagreeable pressure on his neck and that he mav feel as if he were about to choke, and that he cannot get his breath, lie must be gently biU lirmly made to unilersland: 1 1 ) that while the procedure is alanning that it is absolutely free from danger: (2) and that you know just how it feels; (;i) and that you will not al- low his brealli In lie sluil oil completely; 1 I 1 ibal be can help you \er\' greatly as well as make the ])rocedure very much easier for himself by paying close attention tn breathing very dee])ly and regularly, in anil out; (.5) lli;U he must not diaw himself up rigidU as if he were "walking on ice," but must be easy and relax. It will contribute very much to this end if the operator will be particularly gentle and careful about the earlv manipulations of applying the local anesthetic and the like; and 96 DIRIXT LARVNCOSCOPV. \vi11 tell tlio pntie-nt. after the epiglottis is exposed ami tlie application of the local anesthetic made to it. that there will be nothing worse to be gone through with. Some endoscopists advocate telling the patient to put up his hand if the procedure is too severe. The author prefers not to do this because it leads the patient to think that he is about to go through a severe ordeal which he may not be able to survive, and that he must give notice of impending death. Moreover, he is apt to raise his hand and grasp the instrument or the operator's hand. It is better to have the patient's hands held down by a nurse. However, each operator will develop his own method of controlling the patient and the author does not care to urge his own method too strongly. A suggestion of Mr. \\"aggette (Bib. 5GT) is particularly good: Namely that a special signal be arranged by which the patient may inform the operator that the lips or teeth are being painfully pressed upon. The operator interested in his deeper work may otherwise overlook this little detail which is often, needlessly the painful part of the procedure. Technic of exposure of the larynx in tlic sittiiu/ patient. Exposing the lar\ nx with the speculum in the sitting position should be approached from the standpoint of depressing the tongue to find the epiglottis and then depressing and drawing forward the epiglottis, tongue and all tis- sues attached to the hyoid bone. By keeping this constantly in mind, two of the greatest difficulties and errors will be prevented; namely, (1) the tendency on the part of the patient to throw his head far back as if he were about to have his neck shaved, and (3) the tendencv on the part of the operator to follow the patient and thus to get his elbow high- er and higher, his own head farther back and to use the patient's upper teeth as a fulcrum in an effort to pry open the larynx, a movement that defeats its own object. To avoid this, the author sits on a stool in front of the patient precisely as if he were about to use a tongue depressor to examine the pharynx. The position of the operator shown in Fig. 70 is the highest that should be attained at the complete exposure of the larynx when the operator is looking directly into the trachea. In beginning to introduce the laryngoscope the operator should stoop much lower, having his head about level with iliat of the patient. (Fig. 77). The introduction of the instrument should be considered in three stages. 1. Exposure and identification of the epiglottis. 2. Placing the spatular tip back of the epiglottis. 3. Anterior downward traction on the epiglottis and all the tis- sues attached to the hyoid bone. First stage. The patient's head being covered with a sterile cap, the second assistant pushes llie patient's head and neck forward as shown in Fig. 70. The operator holds the laryngoscope in his left hand (Fig. DIRliCT LARYNGOSCOPY. 97 Fig. 77. — ']"lic upper illustratinii vli,,w^ tlif tii>l ^taLji' dI" iliruii lar\ iignscop.v. The operator is insertint^; the laryngoscope with his left hand while he holds the patient's upper lip out of the way with the right inde.\ finger. In order to show the instrument and the operator's hands the operator is standing to one side of the patient. In actual work the operator sits squarely in front of the patient as shown in the lower illustration. 98 DIRECT LARYNGOSCOPY. 77) while with his right index he raises the patient's upper Hp so that it cannot be pinched between the laryngoscope and the teeth. The distal end of the laryngoscope is passed backward over the median line of the dorsum of the tongue, and. depressing the tongue, in the direction of the .^av ^ "^^ Fig. 78. — Schema showing the first and third stages in e.xposing the laryn.x in direct laryngoscopy. At the left the tongue is being depressed as indicated by the dart, causing the epiglottis to project into the line of vision as shown in the lower illustration. Then the laryngoscope is inserted deeper constituting the second stage. At the right is shown the third stage, the drawing forward of the epiglottis and all of the tissues attached to the hyoid bone with the tip of spatular end, thus exposing the spasmodically closed larynx as shown in the lower right hand illustration. At the next inspiration the larynx will open, exposing the cords and glottis as shown in Fig. 75. (See Fig. 70 for photograph of the positions at the third stage.) dart in the left half of Fig. 78, the upper edge of the epiglottis will come into view, as shown in the circle. The tongtie is depressed until the epiglottis stands up rather prominently like the spout of a pitcher, and shows a goodly portion of its anterior surface. Absolutely no effort should be made to see the larynx until the first stage is accomplished. DIRICCT LARYNGOSCOPY. 99 namely, the identification of the epiglottis. If it fail to come into view, it must he searched for a little more to the right or to the left; hut deep insertion must he strictly avoided. Failure to find the epiglottis nearly always means too deep insertion ; hecause, if the first step is properly taken, namely, to depress the dorsum of th.e tongue slightly until the epiglottis comes up into view, and if the speculum is exactly in the median line, the epiglottis will promptly project upward right in the line of vision, with the lingual surface of the epiglottis toward the operator, as shown in A, Fig. 75, and in the left hand circle in Fig. 78. Second stage. Having identified the epiglottis in the manner just described, the next step is to pass the spatular end of the speculum pos- teriorally to the epiglottis for a distance of about 1 cm. or l..j cm. (slightly less than 1 cm. in a child). The depth of insertion cannot be gauged by arbitrary measurements. Nothing but experience will enable the operator to get it exactly right for the particular case, since the ne- cessary distance is subject to wide individual variations. If the depth is not correctly gauged the error will be revealed in the third stage. Third static Witiiout permitting the laryngoscope to go deeper, the larynx is exjic^sed by a movement of the spatular end of the laryn- goscope in the direction of the dart in the right half of Fig. 78. This movement is fundamental in c\])osure of the larynx. It is, perhaps, best described as an eft'ort to pull the epiglottis and hyoid bone downward, outward and forward toward the oi)erator with the tip of the spatular end. The patient's whole head i^hould be inilled forward by the power exerted. If this is kept in mind there will be no danger of falling into the error of trying to pry open the larynx using the upper teeth as a fulcrum. If the operator expects now to see the larynx as in the laryn- geal mirror, lie will, in most instances, be disappointed for reasons al- ready given. Usually a spasm of the larynx hides the cords from view and all that is seen is the two rounded eminences over the arytenoids. The jjatient must be encouraged and jiacificd if alarmed, and must be frequently admonished to breathe deeply. .\l the first inspiration the cords will be seen more or less hidden by the overhanging ventricular bands, if the laryngoscope is properly ])laced and the effort of the oper- ator's left hand is properly exerted. It re(|uires considerable strength and endurance in the wrist to hold oul (jf the way the tissues of a mus- cular ])atient with a shoii thick neck. If tlu- cords are seen, then it is known that the laryngoscope is properly placed and that no harm can Ije done by firm ])ulling in the proper direction, provided the instrument is in the middle line. If in executing the third ^t.•Lge the epiglottis slips away downward, the insertion of the second stage has not been deep enough, and the ejiiglottis must be very carefully identilied again and the 100 DIRItCT I.ARVXC.OSCOPV. insertion made slightly deeper. If a hasty movement is made to catch the epiglottis the aryepiglottic fold may be mistaken for the epiglottis and then forward traction will expose the corresponding pyriform sinus; which is bewildering to tlie beginner who concludes that the larynx is hard to find. If. on the other liand, in executing the second stage the laryngoscope is inserted too deeply, the hypo-pharynx will be entered and the third stage will fail to expose the larynx and very strong muscular effort will result in exposing the pyriform sinuses or even the mouth of the esophagus. Difficulties. If careful attention has been given to all the instruc- tions as to position of patient and operator and to the successive execu- tion of each of the three stages, there should be no great difficulty in suc- ceeding in an average case after a few trials. But it is by no means easy to execute every detail correctly, especially without a trained assistant. If the head of the patient has l)een allowed to rotate or to deviate laterally, the larv'Hx will not seem to be where it ought to be — in the median line. If the laryngoscope has not been held firmly in the middle line, the same "lost larynx" may result from the distortion due to the slipping sidewise of the tongue and its attachments. If the laryngeal aperture cannot be found the patient should be allowed a moment's rest during which he can expectorate secretions. Each time the instrument is removed it should be wi]jed clean with a square of gauze, because a patient does not like even his own saliva put back in his mouth. The same movement wipes the lamp. Then a fresh start should be made. If the larynx still fails to be re- vealed the endoscopist should ask himself which of the hereinafter given "rules" he has violated. If the larj'nx is correctly exposed squarely before the Iar\-ngoscope, but only the posterior commissure is visible even on deep inspiration, the pulling with the tip of the spatular end should be increased and the patient's head should be brought further forward toward the operator, and extension lessened rather than in- creased. If the anterior commissure still fails to appear the second as- sistant who holds the head should, with his right index linger externally on the neck, pull the thyroid cartilage backward. If properly done, this will expose the anterior commissure in any case, and this is often neces- sary, in order to counteract the forward traction of the larynx by its at- tachments to the hyoid bone. Like all purely manual procedures, practice is required to render direct laryngoscopy easy and smooth in its execu- tion, which is a matter entirely separate from knowiiicj hozv to do it. Ria.Ks roR niKiiCT l.\ryxc.()scoi>y. 1. The laryngoscope must always be held in the left hand, never in the right. DIRIXT LARYXGOSCOPV. 101 2. The operator's right index linger (never the left) should be used to elevate the patient's upper lip so that there is no danger of pinching the lip between the instrument and the teeth. ■ K The patient's head must always be exactly in the middle line. not rotated to the right or left nor bent over sidewise, and tbe ennre head must be forward with extension at the occipito-atloid joint only. (Fig. 65). ■1. The laryngoscope must always be passed over the dorsum of the tongue exactly in the middle line (until the endoscopist is sutticiently skilled to try the obli(|ue position \. 5. The ef)iglottis must always be identified before any attempt is made to expose the larynx. (J. \\"hen first inserting the laryngoscope to find the epiglottis, great care should be taken not to insert too deeply lest the epiglottis be overridden and thus hidden 7. After ideiititication of the epiglottis, too deep insertion of the laryngoscope must be carefully avoided lest the spatula be inserted back of the arytenoids into the hypo-pharynx. S. E.xposure of the larynx is accomplished by pulling forward the epiglottis and the tissues attached to the hyoid bone, and not by prying these tissues forward with the upper teeth as a fulcrum. !•. Care must be taken to avoid mistaking the ary-epiglottic fold for the epiglottis itself. (Most likely to occur from rotation of the pa- tient's head.) lu. 'JMie tube should not be retained too long in place, but should be removed and the patient permitted to swallow the accumulated saliva, which, if the laryngoscope is too long in place, will trickle down into the trachea and cause cough. ( Swallowing is almost impossible while the laryngosco]ie is in position). \\. The ])atienl must be instructed to breallu' dce])ly and i|uielly without making a sound. 12. In the sitting position of the patient, the i>])erator should als(j be sitting. Direct laryiuioscopx by hitercil and oblique methods. In the fore- going description of the technic of direct laryngoscopy, it is stated that the instruments should be jiassed exactly in the middle line (i\er the dorsum of the tongue. This is intended to render orientation easy. After facility is acquired and the faculty of readily recognizing various land- marks is developed, it will be found a great advantage in exposing the larynx to pass the laryngoscope at the side of the tongue from the cor- ner of the mouth, the head being turned very slightly toward the oppo- site side. Otherwise the position is the same as by the regular method. 102 DIRKCT LAKYNGOSCOPY. As the exposure is obliciue, the larynx will look somewhat asymmetrical and more will be seen of one wall than of the other. This, however, is of very great advantage when it is desired to inspect the ventricle, the laryngoscope being passed from the corner of the mouth opposite to the ventricle to be examined ; that is, through the right corner of the mouth when the left ventricle is to be examined, and vice versa. The oblique method also is of very great ad\antage in the removal of tumors from the ventricle and from the subglottic regions, and very often from the cords themselves, the speculum being passed from the corner of the mouth opposite to the side of the larynx on which it is intended to operate. A narrow tube laryngoscope such as shown in Fig. 21 (child's size ) is best adapted to larvngoscopy at the side of the tongue. The author cannot understand Briinings' objections to the lateral route. In using lateral opening specula such as the one shown in Fig. 15, with the slide oiT. it is best to pass the instrument to one side of the tongue, selecting the side that will leave the tongue on the side of the instrument that has no opening. If the tongue is on the side of the opening the tongue will crowd into the opening, and obstruct the view. These lateral opening specula, however, are not especiall)- intended for lateral use. They are useful only for regular dorso-lingual passage under general anesthesia. They are too wide for use under local anesthesia. Exposure of the larynx iintli the instruments of Briinings, or of Kahler, and with all modifications of these and of the author's laryngo- scope, is precisely the same as described in the foregoing. The technical illustrations show the author's instrument but the movements are identi- cal with all other instruments of the same position of handle, which has come to be universallv employed for the sitting position. The simple L-shaped laryngoscope has been generally abandoned for laryngoscopy upon the sitting patient. The only difiference in the use of the various laryngoscopes for this purpose is in the management of the illumination, proximal, distal or headband types. Killian uses an improved form of Kirstein headlamj) for all direct laryngoscopic procedures except for demonstration, for which he uses the handlamp at the proximal end of the tube. Subglottic laryngoscopy. For examining the subglottic region in adults the child's size of the esophageal speculum. Fig. 21, is very sat- isfactory. It is used instead of the laryngoscope to expose the larynx, and then it is gently slid down into the glottis while carefullv keeping in view the two arytenoid eminences as the tip of the speculum enters the glottis. In children, however, the author prefers to insert one of his regular bronchoscopes. Fig. Ki, because the instrument is extremely light and delicate, therefore there is no danger of causing subglottic DIRKCT LARYNGOSCOPY. 103 edema. The Briiiiings and Kahlcr bronchoscopes may be used for either ackilts or children in the way jnst described for the child's esophageal speculum. Great care should be used in thus examining the subglottic region of children, for the reason given. THE TKCIIMC Ol" IlIKKCT L.\RYNC.i:.\L OPKRATING. The picl^amtioii of the patient, local as well as general, should be carried out as elsewhere herein suggested. Particular attention should be given to oral antisepsis, however trivial the growth and its removal may seem to be ; and the general examination should never be omitted except in great emergency. Anesthesia has been elsewhere considered in detail. For direct laryngoscopy upon the sitting adult patient it is usually local, never general. The more thoroughly it is carried out the easier will l)e tlie operation, because of the lessening of the reflex spasm, not because of need of analgesia.* Left-hand exposure. The prime essential of direct laryngeal oper- ating is perfect mastery of continuous left-handed laryngeal exposure. The left hand must be able, unaided, not only to expose the larynx but to maintain the exposure for at least a minute. Many operative pro- cedures can lie completed ni this time if a ])roper pl.in of working has been devised. Those that ret[uire a longer period can be C(jmpleled by removal and reinsertion of the laryngoscojie. The author personally finds no difficulty in holding the larynx open for ten tn iifteen minutes if need be, and Ur. Jillen J. Patterson has fre(|uently held the larynx exposed for a twenty-tive minute radium a[)plication. Yet most oper- ators lind prolonged exposure tiresome ; and there is no objection to in- termittent exposure, with intervals for ex])ectoration, provided the e.x- posure is steady and efficient with the left hand only. This is not at all difficult to acquire if the student will begin right, as previously ex- plained, and follow precisely the directions herein given for direct laryn- geal exposure, always with the left hand only. Like all purely manual procedures, especially bimanual procedures, such as the playing of mu- sical instruments, what seems at first difficult becomes easy with prac- tice to those who are not discouraged by early ditficultics. Endoscopic use of laryngeal forceps. Having mastered direct laryngeal left-hand exposure the next step is to learn the use of for- •Tlie rellt'X .spa.im here refeiieil to is the oidinar.v Blottie mi)vement. The statement of .some authors that the interior of the larynx shouid be cocainized to prevent re.xpiratory arrest from "vaBTU.s rellexes" can only refer to patients under ijrenerai nne.slhrsia. possil)l.v partially iindei". In over one lhr. I'alter.Mon and the autiior tliere has never been an arrest of respiration when no anesthetic, general or local, was used. 104 DIRIX'T LAUVNGOSCOPV. ceps. A multiplicity of forceps for the removal of growth is quite un- necessary and is really a great hindrance to good work. It is far better to rely upon one forceps such as that shown in Fig. 35, and by culti- vating dexterity with this instrument all the different forms and posi- tions of growths as shown in Fig. 7!' can be removed with far greater precision than if all (littorcnt forms and angles of jaws, guillotines, etc., are tried first and found wanting. \\'hen the one forceps is mastered, others may be added as found desirable. It 5s the author's custom to have the jaws always set to open the one way — up and down. If any other angle may seem desirable, the forceps are tiu'ued in the hand even to complete reversal, the thumb and finger exchanging rings. This may not appeal to many, and the author would not urge it ; but he does espe- FiG. 79. — Indirect views of different types of laryngeal growths. A. Multiple papilloniata in a woman of 25 years, requiring traclieotomy. Cured by repeated direct laryngoscopic operations. B. Multiple infra-glottic tibro-papillomata in a woman of 54 years, cured Ijy direct operations. C. Fibroma attached to the under surface of right cord at the anterior commissure in a man of 39 years. Cured by a single removal. D. Subglottic angioma in a man of 42 years. All of these different types of tumor were removed with the one form of tissue forceps (Fi,g. .55) illustrating the Heedlessness of a large variety of forceps. cially urge that all early practice work be done with the one forceps and with the jaws opening only one way until the eye is trained to watch the forceps open and close. The gauging of depth by the use of one eye only is at all times difficult except by prolonged practice. It is more than usually difficult in direct laryngeal operating because of the misconception as to the real depth of the larynx, as before mentioned. These two factors contribute to such accidents as shown at B, in Fig. SO, where, in the attempt to reach a growth of the cord, miscalculation as to the real depth of the growth and of the cord from which it sprung caused the oper- ator, who was a very skillful man by the indirect method, to punch out a section of the ventricular band leaving the floor of the ventricle ex- posed to view. While this is not a \crv grave accident, if not too far posteriorly, it is one to lie a\()i(led on the general principle that all un- DIRECT I.ARYNC.OSCOPV. 105 necessary laryngeal trauma is always to be avoided with the utmost care, because onlv by so doing can we hope for the highest percentage of good results. Serious vocal impairment may result from such an ac- cident if relatively deep down i)osteriorly. A still more serious acci- dent is seen at C. where a large jjart of the left cord was afterward dis- covered at indirect laryngoscopy to have been punched away leaving the fibroma unharmed. Worse yet is the accident shown at D, where a large part of the arytenoid cartilage has been removed and the arytenoid mo\ements jiermanently imjiaired. As shown by the author the chief factor in the jiroduction of an efficient adventitious vocal cord is the traction of an unimpaired ar\tenoid. L'nfortunately misdirected excisions are espccialh- liable to be located posteriori}'. Only by practice can the Fig. 8o. — A direct view showing hiding of the end of the forceps by spasmodic closure of the ventricular bands. At the same moment the upper orifice of the larynx closes somewhat also, though this is not shown in order to illustrate the spasmodic closure of the bands. The operator thinking his forceps correctly placed, closes tlicni, and, later at inchrcct laryngoscopy, is surprised to find the ventricular band cut away and the growth below unharmed, (B). A worse accident is sliown at C where llie posterior half of the cord is removed leaving the fibroma unharmed. Still more serious is the accident at D, where a large part of the left arytenoid was removed. ( B, C, and D were sketched by the author from cases seen in mnsulta- tion immediately after the accident.) faculty of gauging tlepth be actiuircd. and especially by practice which enables the operator to work with both eyes open, ignoring the image of the left eye. A darkened room assists in acquiring this faculty. If the habit of holding the left eye closed is formed, the vision of the right eye is, for the tiine being, impaired and the operator is needlessly fa- tigued, as pointed out by the author many years ago. Another factor in the avoidance of the accidents above referred to is to make it a ruk' to work only by sight. The jaws must be seen to close properly on the growth, otherwise they nuist not be closed. In the event of a spasmodic contraction of the laryn.x, gras]iing the forceps as shown at A. in Fig SO, the forceps should be withdrawn and if working under a local anes- thetic more nf the anesthetic solution should be ai)i)lied. If working un- 106 DiRr:cT laryngoscopy. (ler a general anesthetic, (recumbent patient) the depth of the anes- thesia should be increased. If working without an anesthetic an oppor- tunity must be awaited when the larynx is free from spasm. A child will clean its throat by swallowing or the secretions will drain out if the child is turned over. If the field is covered with blood or secretions, rendering accurate guidance of the forceps impossible, the larjngoscope and forceps must be removed and the patient told to "clear his throat.' If a growth at the anterior commissure fails to come into view, the as- sistant holding the head uses his inde.x finger to press backward the thyroid cartilage, at the same time steadying it, and this counterpressure, when properly exerted will bring into view the anterior commissure in any case where the endoscopist is holding his speculum properly. Either lateral wall above or below the commissure can be rendered prominent by skilled counterpressure. Under no circumstances should the operator attempt to reach a growth anteriorly that he cannot see, simply from his memory of its location at previous indirect laryngoscopy. In the removal of small tumors, either on the cords or below, it is often a very great advantage to introduce the speculum and to work from the opposite side; therefore, in rightsided tumors, the speculum is put in the left side of the mouth and on the left side of the patient's tongue. Then by moving the patient's head to the right, we get a good view of the right wall of the larynx. In very sensitive adult patients, it may be wise to make an application of 8 per cent cocaine solution along the side of the tongue at the back, on the side through which the speculum is to be passed. To those who try this method for the first time, there may be some trouble with the tongue rolling over the open portion of the speculum and obstructing the view, but the operator soon learns to con- trol this. In tumors below a cord (as at D, Fig. 7!)j there is a great temptation to use a sliding punch forceps, which, however, is almost cer- tain to remove the cord and muscular tissue. A better method is to tilt the cord over sidewise with the spatular end of the laryngoscope and the growth thus can be presented fairly in front of the spatula by extreme lateral movement, as shown in Fig. 80, and by pushing firmly on the laryngoscope. Then the tissue forceps (Fig. 35) can be accurately placed without the growth slipping away. When the patient coughs up much blood the lamp may become somewhat obscured. Conditions here are very different from work in the tracheo-bronchial tree and in the esophagus because in the latter two regions the tube, when introduced, is allowed to remain throughout the entire procedure, and the swabs with which the field is wiped also at the same time, without any effort, wipe the lamp. In the larynx, however, working as is almost invariably the case, with local anesthesia or with none at all, the direct larj'ngoscope DIRECT LARYNGOSCOPY. 1(J7 is frequently withdrawn, and then reintroduced after the patient has been permitted to expectorate tlie blood and mucus. At these inter- vals the sjiatular end of the direct laryngoscojie is wiped by the operator with a square of gauze witliout removal of the light carrier. This wip- ing cleanses the portion of the lamp which emits the light needed. There is no need to cleanse the back of the lamp nor the socket, nor the little pocket in which the lamp lies. In working with the hand lamp the mir- ror is cleansed of the spattered coughed-out secretions at these removals. With the head lam]) the lens front and mirror are to be similarly cleansed and readjusted in the visual axis. With the Claar reflector the mirror and lamp both are cleansed and readjusted to position before the eye. With any of these forehead forms of illumination a nurse should be in- structed as to this cleansing so as to minimize the loss of time. In the foregoing the author has referred only to the one kind of forceps. By this he does not wish to disapprove of sliding-punch for- ceps. On the contrary, punch forceps are very useful at times, but their use should not be attempted until the operator is quite familiar w^ith di- rect laryngeal operating, because of the greater liability to such acci- dents as shown at B and C in Fig. 80. Taking of a laryngeal specimen for diagnosis. This work is not concerned with diagnosis, yet, it may be said in passing that the diagnosis of carcinoma rests largely upon the histologic examination. The diag- nosis of sarcoma rests largely on the exclusion of laryngeal tuberculosis by histologic and bacillary tissue examinations, animal injections of tis- sue, emulsions, etc. ; and on the exclusion of lues by the therapeutic, the Wasscrniann and the luetin tests. But for biopsy to be of any value either positively or negatively, it is essential to have an ample specimen. In the old days the minute fragment from an uncertain location was a disgrace to the laryngologist, an enormity of injustice to the microsco- pist and, worst of all. to the patient. Too often the so-called "specimen"' w'as, as aptly described by Jonathan Wright (Bib. 582) "A tiny bit of tissue chipped off the surface of a laryngeal growth with a pair of for- ceps, nay, not even surely off the growth, but ])erhaps from some other part of the endo-laryngeal surface in tin- neighborhood of the growth, with the assertion from the operator that it did come from the growth." Direct laryngo.scopy for the removal of a specimen has changed all this. The best plan for the removal of the specimen depends upf)n the topography of the laryngeal lesion. If a small growth, it should be re- moved entirely with a goodly jjortion of the normal basal tissues. If a large growlh, and there are objections to entire removal, the edge of the growth including apparently normal as well as neoplastic tissue is ne- cessary. If the larynx is the seat of a diffuse infiltrative process pervad- 108 DIRECT LARYNGOSCOPV. ing nearly the whole larynx a specimen should be taken from at least two locations, preferably axoiding the cords if these are relatively slight- ly involved. In these diffuse infiltrations there is always a suspicion of ])ericlinn(lritis of inflammatory, luetic or tuberculous origin, therefore it is often desirable to include a bit of cartilage in the specimen. About the only place where it is justifiable (in probably benign cases I to remove cartilage is from tiie epiglottis. If the epiglottis is uninvolved the ex- treme tip of the arytenoid, or better still, the cartilage of Santorini or of W'risberg may be removed ; but accuracy is necessary here in order not to do unnecessary damage to the crico-arytenoid joint. After the taking Fig. 8i. — Schema of a cross section of the larynx illustrating the outward depth of the ventricle, and also the reason why dyspnea is usually inspiratory. \', B, ventricular bands. V, ventricle. T, thyroid cartilage. C, cricoid cartilage. V, C, vocal cords. In any dyspneic condition such as bilateral paralysis, air pres- sure of attempted inspiration acting upon the floor of the ventricle, V, will force the cords together, whereas in expiration the air-flow upward has no tendency to narrow the glottis. In removing growths from the ventricle the band, \', B, must iie lifted (See Fig. 83). of a specimen the patient should be watched for a few days, lest undue reaction supervene from mixed infections getting into the wound, and especially if potassium iodid, which especially predisposes to acute edema has been given. In possibly luetic cases a prompt report must be urged because of the necessity of immediate institution of treatment. In malignancy promptness is also needed. As Sir Felix Semon (Bib. -iD-i) has so ably pointed out, not only should operation closely follow the tak- ing of the specimen; but if the patient should not agree beforehand to radical operation in the event of histologic examination showing malig- nancy, no sjiecimen at all should be taken in cases which clinically seem DIRIX'T LAKY.VCOSCOl'V. ] U'J quite certain to he malignant. Sliouhl the since-discovered effect of ra- dium in controHing malignancy fulfill earK promises, this latter advice, sound in its day, may require modification. Removal of growths from the laryngeal ventricle, (irowths in the ventricle, especially when of small size, may lie rendered exceedingly difficult of removal by the oxerhanging projection of the ventricular bands, which, for the time being, exaggerates very much the outward depth of the ventricle. In such cases, general anesthesia may be required and it is ])erfectly justifiable, provided there is no stenosis whatever, and not the slightest dyspnea. With thorough cocainization. however, it is alwavs possible to get these growths by the lateral method of operating. The degree of overhang of the ventricular band especially when in a state of s[)asm is seldom realized (Fig. SI ), Where a growth involv- ing the cord proliably extends far hack into the ventricle, or where a B Flo. 82. — Pencil sketch of direct laryngoscopic view, sitting patient, shuuing, at ]'). a growth springing from tlie outermost depth of the right ventricle. At ■\, the growth is hidden by the overhang of the ventricular hand. At C. the dntted line indicates the growth under the overhanging ventricular hand. growth springs from the ventricle itself and is hidden by the ventricular band as in Fig. 82, it is not necessary to pimch out the ventricular band (as shown to have been accidentally done in Fig. 80) in order to expose the flcKjr of the ventricle and thus render more accurate llie tumor re- mov;d. In such a case as that shown in Fig. S'i the head of the i)atient is carried far over to one side after the larynx is exposed (Fig. 8;?). If the tube. E, has not been passed at the side of the tongue it is now slii)])ed over to the lower corner of the mouth. 11. .itid the p.itient's head is tilted o\er to the same >ide wliile the o1iser\er w.'Uclies thrciugli the tube. Tile second assistant must keej) the larynx lixed and in the ver- tical position. The tube is ;idvanccd until the ventricular band is fiat- tened and the growth can be renioxed from the ventricle. 110 DIRECT LARYNGOSCOPY. Removal of large benign tumors of the larynx above the cords. The author often uses for this class of case the alligator punch forceps. Fig. 36. They can be inserted through the author's laryngoscope, but the best way is by the author's "ex-tubal" method. The forceps are in- serted alongside the laryngoscope, which is used only to look through for the accurate ocular guidance of the forceps as shown in the schema Fig. 84. The jaws can be placed and the bite made with great accuracy. The side-slide laryngoscope (Fig. l-")) because of its oval lumen is pre- FiG. 83. — Schema illustrating the lateral method of exposing a growth in the ventricle of Morgani, by bending the patient's head to the opposite side while the second assistant externally fixes the larynx with his hand. M, patient's mouth. T, thyroid cartilage. R, right side, L, left. V, B, ventricular band. C, C, vocal cord. The circular drawing indicates the endoscopic view obtainalile by this method. The tube, E, is dropped to the corner of the mouth, B, and the tube is inserted down to R. ferred by many operators some of whom leave the slide oft'. In case of still larger tumors with more or less pedunculated base the heavy snare, Fig. 41, may be used to excellent advantage by the "ex-tubal"' method. In some of the author's cases tumors the size of a hen's egg have been thus removed. Sessile growths may be removed by the galvano-cautery snare, but the author prefers forceps. Of course, there could be no hope of thorough removal of malignancy by such means ; and incom- plete removal is rarely if ever justifiable. DIRKCT I.ARYNCOSCOrY. 11] Aiiipiitalio)! of the cp'u/lottis for palliation of dysphagia in tuber- culosis or malignant disease is an operation easily performed and of benefit where the dysjjhagia is due to ulceration of the epiglottis. It is possible that very early malignancy of the extreme tip can be cured by such means, and the author has had such a successful result in two in- stances. Closure of the air passages to the entrance of food during swal- lowing seems to be a three-fold process. The tilting of the larynx and especially of the arytenoids and the arytenoid a{)proximation are prob- /^:;:;;>v ♦•'> ) Fig. 84. — Sclicma illustrating removal nf a tumor from the upper part of the laryn.K liy the author's "ex-tuhal" method for large tumors. The large alligator basket punch forceps, F, is inserted from the right corner of the mouth, and the jaws are placed over the tumor, T, under guidance of the eye looking through the laryngoscope, L. This method is not used for small tumors. It is excellent for amputation of the epiglottis viith these same punch forceps (Fig. 36) or with the heavy snare. (Fig. 41.) ablv the chief factors. In addition to this, however, there is the closure of the ventricular bands below and the capping by the epiglottis above. The least important of the three seems to be the epiglottis and it can very readily be disjiensed with if necessary to relieve pain or cure dis- ease. Probably its chief function is to act as a snow plow in splitting the food bolus and drifting the two portions laterally into the pyriforin sinuses thus directing the food bolus ])ast the adilus laryngis. Mr. Wal- ter O. lldwarth states that the epiglottis lias imthini,^ wlialc\or to do will' 113 DIRECT LARYNGOSCOPY. laryngeal closure during swallowing. As a clinical fact we know that amputation of the epiglottis is not often followed hy serious .symptoms and results in the relief of pain are excellent. Lockard ( llih. ;!4G ) has collected statistics on the results in tuberculosis. It would not be easy to get out more than the projecting part of the normal epiglottis, but it is not difficult to remove all of the involved portions. The projecting part may be amputated with the heavy snare shown in Fig. 41, and this is the better way in those rare cases of disease limited to the tip be- cause of the en masse removal. In more general involvement either the snare or the large basket alligator punch forceps ma\- be used. With either instrument it is best to operate by the author's "ex-tuljal" method shown in the schema. Fig. 84. Endolarytujcal operations farorhu/ dci'elopwcnt of ad: cntitioits t'O- cal cords. In some instances liberation of adhesions will favor the for- mation of adventitious vocal cords. In other instances where there is tension from contraction of cicatricial tissue hampering mobilitv of the arytenoids an incision designed to relieve the tension and supply a re- FlG. 85. — Autlior's laryngeal knife, 30 cm. long. Illustruliun reuruduccd from the earlier volume. ' dundancy of tissue for later absorption will bring back the voice as illus- trated in the case cited m the section of this work that deals with papil- loma. For such incisions the author's laryngeal knife. Fig. 8."), is ex- cellent. The sharp anterior commissure is essential to good phonation. In Fig. 15, Plate 1, is illustrated a case in which the action of the laryn- geal musculature was unable to approximate and draw tense the adven- titious vocal bands. The patient, a man of thirty years, when convales- cent from a very severe attack of typhoid fever became dyspneic and was tracheotomized by Dr. James \V. McFarlane. When the perichon- dritis had subsided the larynx remained stenosed by cicatricial tissue, and the case was transferred to the author's service at the Western Pennsyl- vania Hospital for decannulation. The stenosis was cured by larvngos- tomy by the author's method as described in a later chapter. After decannulation and plastic closure the patient could not speak louder than a whisper because of inability of the laryngeal musculature to ap- ])roximate and draw tense the cicatricial adventitious vocal bands (Fig. 1-"), Plate 1 ). With a sliding punch forceps the author cleared the anterior commissure of all tissue out to the perichondrium, as shown bv the dotted line, with excellent vocal results. In this kind of case, it is niRI-CT LARYNGOSCOPY. 113 alisoliiteiv necessary to remove the tissue anteriorly very radically but to harm the tissue at the sides as little as possihle. There was a thick redundancy of tissue not under tension. With a thin band-like web under tension it is usually better to incise with the knife as in the case referred to under "Papilloma." Eudosco/'ic evisceration of the larynx is a procedure which will cure a few cases of cicatricial laryngeal stenosis especially those where the cicatrices are thin and web-like. Illustrative cases are shown in Plate 1. Fig. 1 shows a post-dijjhtheritic stenosis in a boy of fourteen years admitted to the Western Pennsylvania HosjMtal for decannulation. .\n incision was made in the plane of the glottis, so that the slide inuicb- forceps could be inserted. All of the endolaryngeal tissue that could be removed without injury to the arytenoid cartilage was extirpated, the efifort Ijeing made to lay bare the perichondrium of the laryngeal wall, as shown schematically in Fig. 8(1. Healing was prompt but left a slight recurrence of the cicatricial tissue in the anterior commissure. Thorough removal of this with a pointed slide-forceps was followed by an excellent result (Fig. ."), Plate 1 ) both as to voice and cure of stenosis. He was seen two years after decannulation and was learning a trade in a mill. A similar case was that of a man. aged 40 years, who applied to the Eye and Ear Hospital Dispensary for decannulation. He had been tracheotomized during typhoid fever about a vear before. The larynx was occluded by a thin membranous cicatrix which left only a small opening posteriorly (Fig. 1, Plate 1 ). There was slight arytenoid move- ment on both sides. The laryn.x was eviscerated as in the previous case, but required two subsecjuent removals of tissue to clear the anterior commissure. .An excellent result was uUinialcly obtained (Fig. 8, Plate ] ) and the [Jatient was decannulated after two months' watching. The voice was loud, though rough, and there was no recurrence of the dyspnea when seen two years later. In three other cases the same meth- od was not sufliciently successful to permit decannulation but the method is well worthy of trial before resorting to laryngiistf)mv. .\ simple punch- ing out of the occluding membrane is not sulTicient. .\n effort should be made to remove all of the tissue in the larynx clear out to the perichon- drium, but without removing any part of either arytenoid cartilage, in non-])aralytic cases. In cases of posticus paralysis the excision may be carried farther back, excising a jiortion of the processus vocalis of the arytenoids. I'oca! results. Two classes of cases must be considered. 1. In cases of laryngeal stenosis in which no air is going through the larynx on expiration with the cannula temporarily occluded with the finger, the patient of course has no voice except the "buccal voice" like 1 I 4 DIRKCT LARYNGOSCOPY. that developed by the laryngectomized patient. These patients can be promised a good whispered voice immediately after operation. Phona- tion will depend on the conditions mentioned below in the next class of cases. 2. In cases of laryngeal stenosis in which anv e.xpiratorv air at all is going throtigh the laryn.x when the tube is temporarih- occluded with the finger, the voice is usually fairly good. Therefore, one of the first questions to be considered is in regard to the voice after operation. The author has demonstrated that the most important factor in the produc- tion of an adventitious cord, after operative or morbid loss of the true cord, is the traction of the arytenoid. The thousands of pulls dailv end in a band which more or less perfectly in appearance and function re- places the lost cord. So close is the resemblance in some cases that ex- FiG. S6. — Schema showing endoscopic evisceration of the laryn.x for posticus paralysis. The attempt is made with the shding punch forceps (Fig. 37) to eviscer- ate all of the laryngeal tissue inside of the dotted line. It is practically an impos- sibility to remove all of the tissue hut the attempt will relieve the stenosis in some instances. In non-paralytic conditions it is very necessary to avoid injuring the arytenoid cartilages ; for in these cases good arytenoid mobility will assist in the formation of an adventitious cord. pert laryngologists are unable to say whether a cord is original or ad- ventitious. To get such results, however, it is absolutely necessary that there shall be mobility of the cricoarytenoid joint. Of course the whis- pered voice will never be lost so long as the respiratory air passes through the larynx. The "stage whisper," for which no cord is necessary, may to be very loud, and in soine instances the ventricular bands will approxi- mate and phonate, but to phonate eft'ectively requires a cord, natural or adventitious. The voice of the ventricular band is deep and rough, and lacks flexibility. The ventricular band, however, is mostly removed in endolarv-ngeal evisceration. From his results with endolarA'ngeal eviscera- tion, the author believes that, in all forms of non-malignant chronic laryngeal stenosis a good chance of a cure of the stenosis may be prom- ised in any case in which there is not too much loss of the cartilage which maintains the patulence of the laryngeal box. An ultimate good niRKCT I.ARYXCOSCOPV. 11.J vuicc can be [jromised in all cases in which there remains good arylenoiil mobility. A fairly loud, though rough and inflexible voice, can be prom- ised in any case without mobility. Endolaryngeal evisceration should be tried before resorting to laryngostomy. Galvano-cauterizatiou for chronic hypertrophic laryui/col stenosis. The author has had e.xcellent results from the galvano-cauterization of chronic subglottic edema or hyperplasia seen in children after diphtheria. In some instances the children had been intubated in others tracheotom- ized for dyspnea during the height of the diphtheritic process. An illus- trative case is shown in Fig. 87, referred to the author by Dr. Torian for extuljation. A boy of two years, after laryngeal diphtheria requiring in- tubation, could not be extubated because of a recurrence of dyspnea within a few minutes of the removal of the intuliation tube. A number of attempts had been made during two months. In the recimibent posi- tion the author remo\eil the intubation tulie tlirou.nh the direct laryng(j- ®®®® Fk;. S7. — IHrt'ct view. Recumbent pcisitimi. Illustration ol the effectiveness of galvano-cauterization of post-diiilitheritic subglottic stenosis. A, shows the larynx immediately after the reinoval of the intubation tube. B, five minutes later the hyprrtropliic subglottic masses on each side are seen to have closed in like intumes- cent turbinals. C, the left mass has been cauterized and is bound down by a linear cicatrix parallel with the long axis of the trachea. D, shows the larynx after cure by repeated cauterizations. scope. A subglottic mass could be seen on each side, biu an ample chink was left for breathing, as shown at A. Fig. 87. At the end of live min- utes the masses had swollen until they almost met in the median line and the child became intensely cyanotic. A bronchoscope was inserted and left in the trachea while a tracheotomy was done. Later the galvano- cautery knife was used to incise the hypertrophic masses, one such in- cision Ijeing shown at C. .\ perfect cure resulted and the child was re- ported well six months later, .\notlier case, that of a young child tracheotomized for diphtheria three months previously, was referred to the author for decannulation by Dr. j. W. .Mtn-jihy. Galvano-cauteriza- tion of the subglottic hypertrophies, as in the jireviously mentioned case. 116 DIRECT LARYNGOSCOPY. resulted in a complete and permanent cnre. It was still well a year and a half later. In one case admitted to the Western I'ennsylvania Hospi- tal subo^lottic edema followed an influenzal tracheitis for which tracheot- om\- had been done. The same method resulted in perfect cure that has borne the test of time. The method is ideal for hypertrophic condi- tions, Ijut is not so well adapted to cicatricial stenoses, though the au- thor had a [jartial result in one case. Galvano-cautery puncture has superseded all caustics for laryngeal use. The excellent results achieved by Heryng, Hajek and jMermod (Bib. 407) in the galvano-caustic treatment of tuberculosis, led the au- thor to develop the endoscopic technic and his results have been very sat- isfactory. This plan of treatment has also been advocated in an excellent monogra])h ( Bib. 20) by Prof. Louis Bar of Xice. The use of the curette Fic. 88. — Direct view (sitting position) of a tnl)crculous larynx, in a girl of 17 years. The large club-shaped infiltrations in the right hand view were reduced by three cauterizations at three weeks' intervals to the size shown on the left hand. Slight sloughing occurred near the right arytenoid (upper left quadrant of the left circle). This is a rare sequel, and it did ui> harm. and of lactic acid have been quite generally abandoned since such abun- dant evidence has been forthcoming, proving the great usefulness of the galvano-cautery in the treatment of tuberculous infiltrations in the larynx and all of the laryngologists who have used the direct methods for these apjilications are enthusiastic as to the precision with which the caustic point can be ap[)lied. The direct method exposes to view the anterior surface of the posterior wall of the arytenoid masses, and thus the point can lie applied practically per[)cndicularly to the surface, which is in great contrast to the indirect niethod by which a more or less lateral ap- plication of the poiiU renders accurate puncture more difficult, and some- times im])ossible. I'urthermore, it matters little how intolerant the pa- tient may be to the laryngoscopic mirror; he cannot in any case what- DIRECT LAKVNC.OSCOPV. 117 soever prevciu tlie skillful oi'eialor from makini; an accurate applica- tion. Direct larxngoscopy has opened u\> a new field in the local treat- ment of tul)erciilcus lesions. It seems eiptally well adapted to ulcerative and non-ulcerated infiltrations. Of course, it is sufiject to the same general and local contraindications that apply to any surgical treatment of laryngeal tuberculosis, especially the inadvisability in cases with ad- vanced pulmonary disease. In severely stenosed larynges a tracheotomy should first be done, for though tlic reaction is slight, it might be sufti- cient to close the narrowed glottis. Application of the galvano-cautery to tuberculous lesions below the larynx has been unsatisfactory in the author's hands. The technic is simple. The author uses the electrode illustrated in his earlier work I l!ib. 2(i9) with hard rubber insulation vul- canized onto the copjjcr conductors insuring cleanliness. In a few in- stances a right-angled point is useful but usually the straight point is better. The larynx is anesthetized locally and exposed with the direct laryngoscope, the patient sitting. The rheostat having been previously adjusted to heat the electrode to a very nearly white heat, the circuit is broken and the electrode is introduced cold. \\ hen the point is in contact with the desired location the current is turned on and the point thrust in as deeply as desired. I'sually it should j)enetrate until a firm resistance is felt ; but care must be used not to damage the cricoarytenoid joint. The circuit is broken at the instant of withdrawal. Punctures should be made as nearly [lerpendicular to the surface as possible, so as to minimize the destruction of epithelium, and to minimize the reaction which is greater after a broail suj)erficial caiUerization. The reaction is usually slight, a gray tibrinous slough detaching itself in a few days. In one c;ise the author h.id rather extensive sloughing, but it left no bail result. Xo after-treatment is needed. Cautery-] )unctures should be re- I)eated every two or three weeks selecting a new location each time until the desired residt is obtained. .Iftcr-iarc. After any endolaryngeal operation, cleanliness of the mouth must be insured by brushing the teeth after taking food, anil by the rinsing of the mouth with alcohol 1 part to 'i of water. If the oper- ative w'ound extends out of the interior of the larynx, sterile water and sterile liquid food should be given for four days. \o local applications are needed. Comjilications should, of course, be watched for. In all cases, whether lr;icheotiimized or not. ihe ]>alient sliouKl be \\;itched Ijv :i special tracheal nurse. In cases not tracheolomized, the |)ossibilitv of laryngeal dyspnea sliouhl be in the mind of the sin-geon and the muse. Inspiratory indrawing arunnd the cl;i\icles, inspirators indr.iu ini; almve the sternum ;uid .'it the e|iigaslriinn. and a fiir\\,ird movement (if the 118 DIRECT LARYNGOSCOPY. chin at each inspiration are the danger signs demanding immediate tracheotomy. Cyanosis should not be waited for. Complications during cndolaryngeal operation are very rare. Dysp- nea mav increase if the larynx is stenotic before ojieration. and tracheot- omy may be required in such cases. Idiosyncracy to cocaine may induce toxic symptoms. The sight and taste of blood may nauseate the pa- tient, causing syncope. Serious hemorrhage could occur only in a hemo- phile, and it would be long after the operation before the loss of blood would be serious. Injury to an incisor tooth can only come from mis- directed eilfort in a false position. The bite-block, however, unless care- fully handled might damage a frail tooth, "bridge-work," a capped tooth, or other dental fixture. The loss of a portion of an instrument down into the air passage is a complication to be avoided by having well made instruments and especially by careful inspection from time to time. Complications after cndolaryngeal operations are unusual, yet all patients should be watched closely. Inflammatory reaction is rarely se- vere if the aseptic technic has been without a slip. Cervical cellulitis has been known to follow carelessness in this respect. Edema of the larynx occasionally occurs and in rare instances necessitates tracheot- omy. Emphysema of the neck occurs \ery rarely. It does not require treatment ordinarily; but mav be treated in the usual way if desired. Hemorrhage sufficient to re(|uire attention, either at operation or sub- sequently, is very rare, except in hemophiles. Hemorrhage within the larynx of a hemophile can be stopped by packing a roll of gauze tightly down into the laryn.x from above, if the patient is tracheotomized ; and if not, tracheotomy should be done. This was required in one case of the author, that of a hemophile. Styptics are very objectionable for laryngeal use, and have been known to set up serious lung complications. Mermod (Bib. 384) advises morphine subcutaneously. DIRECT L.\RYNGOSCOPV, ADULT P.VTIK.NT, RKCUMUKXT. Exposure of the larynx in the recumbent patient is precisely the same as in the sitting patient so far as the relation of the instrument to the patient is concerned, and so far as the position of the head and neck of the patient relatively to the patient's body is concerned. The manner of grasping the handle of the direct laryngoscope, however, varies, and the endoscopic image is reversed with reference to the operator's eve both in the vertical and the horizontal direction. What was to the operator the left side of the image now is the right, and the anterior commissure which before was at the bottom of the circular endoscopic picture, is now at tiie top of ihe circle. For this reasoiL practice in the DIRECT LARYNGOSCOPY. 119 sitting position is of hut little avail and a large amount of practice is re<]uired in the recumhent position, because much of the endoscopic work, and practically all of the foreign body work in the larynx and the tracheo-bronchial tree is, or should be, done in the recumbent position. The best position for the recumbent patient is that of Boyce, as de- scribed in a previous cha|)ter and shown in Fig. T"2 with the head raised high and fully extended. I'nder no circumstances during direct Fig. 89. — Direct laryngoscopy, recumbent patient. The second assistant is sitting holding the head in the Boycc position, his left forearm on his /(•// thigh, his left foot on a stool whose top is 65 cm. lower than the table-top. His left hand is on the patient's sterile-covered scalp, the thinnb on the forehead, the fingers imder the occiput, making forced extension. The riylit forearm passes under the neck of the patient, so that the index finger of the right hand holds the bite block in the left corner of the patient's mouth. The operator stands, but may sit on a stool of the same height as that on which the second assistant is sittini;. .\n enlarged view of the operator's hands is shown in Fig. 90. larj'pgoscopy should the head be allowed to hang over the end of the table in the Rose position. I'efore a start is made, everv detail ineminiied luider the head of operating room organization >honl(l have been carried out. l'",very in- strument that might jiossibly be needed shouM be sterile and ready, sponge holders armed, assistants in jiosition, including those who are to hold the patient's arms and legs, as well as the one who holds the head 120 DIRECT LAKYNCOSCOPY. and the other who passes the needed instruments. The second assist- ant who holds the head, then takes the sterile cap, slips it over the pa- tient's head until the opening comes opposite the mouth of the patient. Then he grasps the patieiu's head and elevates it while the unsterile nurse drops the head-hoard or shortens down the back-board of the Dr. French table, as the case ma\- be, leaving the jiatient's shoulders as far as the ridge of the scapula, as well as the head and neck of the patient, out in the air supported bv the second assistant, who nnw raises the head Fig. go. — Direct lar\ngoscopy, recumbent patient. The laryngoscope is held in the left hand. The first, second and third fingers of the right hand are used to pull down the uppei lip of the patient to prevent pinching the lip 1)et\vecn the laryngoscope and the teeth. The camera being above the patient .gives a false im- pression of the position of the head and chest. The chest is really very much lower than the head. wilh the left hand, his thumb being on the patient's forehead, while the right hand is passed below the patient's neck so that the thimble gag on his first finger can be inserted between the teeth at the left side of the patient's mouth, the second assistant being on the right hand side of the patient (Fig. 89). The most important part of the procedure at this point is the high elevation of the patient's head. Under no circum- stances must it at this stage be jiermitted to fall until the vertex is lower than the table top. DIRKCT LAKYNC.OSIOI'V. 1-21 The introduction of the direct laryngoscope and the exposure of the larynx may best, for clearness of description as well as for promptness and eft'ectiveness of execution, be divided into two stages. 1. Exposure and identification of the epiglottis. 2. Elevation of the epiglottis and all the tissues attached to the hyoid bone so as to expose the larynx to direct view. The tongue of the patient need not be held out. The patient is sim])ly told to open his mouth, or, in the case of general anesthesia, the mouth is opened and tlie bite-block, Fig. 3!l, is inserted. The direct laryn- goscope is grasped, as shown in Fig. HO. which is perferable to that shown in Fig. 59. Absolutely always and in\arialily the left hand must be used to grasp the laryngoscope. If this be not done, the operator will be seriously handicapped when it comes to passing a bronchoscope, or to Fig. 91. — End of first stage of direct laryngoscopy, recumbent adult patient. The epiglottis is e.\posed by a stroni^ lifting movement of ibe spaUiln tip on the tongue anterior to the epiglottis. operate on the larynx, because the right hand should be free just as soon as it is through with its very im])ortant duty of drawing the upper lip toward the nose of the patient in order to prevent the lip getting pinclicd between the laryngoscojic and the upper teeth. The laryngoscoiie is passed into the patient's mouth posterior to the dorsum of the tongue, exactly in the middle line, particular note being taken that the patient's head is exactly square with the body : that is, not deviated to either side. nor rotated. The dorsum of the tongue is now pressed anteriorly, in other words, lifted, in the recumbent position of the i)alient, until tlu- epiglottis comes into view. Great care mtist be taken not to pass the spatular lip beyimd the epiglottis in this first stage; and it is better to elevate the dorsum of the tongue from time to time in order tlial there shall be no danger of the epiglottis being overridden. When the epiglot- tis is seen to ])roject into the endoscopic field, as shown in Fig. !•] , the first stage is completed. ]22 DIRKCT LARYNGOSCOPY. Second sta(/c. Tlie spatular end of the direct laryngoscope is in- serted to a distance of, on the average, about 1 cm. and then the larynx is exposed by a motion that is best described as a suspension of the head and neck of the patient on the tip of the spatular end of the laryngo- scope Fig. ')■■?. In other words we try to lift the jiatient's head with Fig. Q2. — Schema illustrating the technic of direct laryngoscopy on the recum- bent patient. The motion is imparted to the tip of the laryngoscope as if to lift the patient by his hyoid bone. The portion of the table to the left of the word "TABLE" may be dropped or not, but the back of the head must never go lower than here shown, for direct laryngoscopy. The table may be used as a rest for the operator's left elbow to take the weight of the head. The author prefers head section of the table dropped. (Note that in bronchoscopy and esophagoscopy the head section of the table must be dropped, so as to leave the head and neck of the patient out in the air, supported by the second assistant.) the tip of the speculum. The assistant, consequently, must not take all the weight of the head. Particular care must be taken at this stage not to pry upon the upper teeth ; but rather to impart a lifting motion with the tip of the speculum without depressing the jiroximal tubular orifice. If the teeth are used as a fulcrum, there will be a tendency to pry the head downward, which is a distinct disadvantage; because the head DIRECT LARYXGOSCOPY. 133 should be kept high as well as extended. The view first obtained of the larynx is, to the beginner, often unsatisfactory, because the larynx is in a state of spasm ; and usually but little is to be seen but two rounded masses, and anterior to them the ventricular bands in more or less close apposition hiding the cords (Fig. i)3). Of course in deep anesthesia, or often even in the very thoroughly locally anesthetized larynx, this spasm does not occur, and the second stage at once reveals the cords moving rhythmically with ins])ir,ition and expiration. It is customary with some endoscopists to ask the jiatient to phonate continuously in order to render more easy the identification of the glottic chink and vocal cords. It is very much Ijetlcr. however, in the author's o])inion, to insist U])on the jjatient breathing steadily and deeply: but the begin- 1-ic;. t).?. — Lndoscopic view at tlie eiul ol the si-coiul stage of direct laryngoscopy. Recumbent patient. Laryn.v exposed. Waiting for larynx to relax its spasmodic contraction. A deep inspiration will then show the cords beautifully exposed. In the full relaxation of deep anesthesia this spasmodic closure does not exist and the second stage reveals the cords opening and closing rli\ thniirally with inspira- tion and expiration. ner should try both ways. If his attention is fixed upon this before- hand, almost any adult will keep on breathing if the command is re- peated frequently. DifticiiUics of dirrcl laryngoscopy. 'I'he difficulties may be classi- fied under two heads: Those that pertain to the patient and those that pertain to the operator. The ease of exposure of the larynx varies within very wide limits in adult patients. There is very little difference in children. A very muscular, .stout adult with a short, thick neck and a full row of ujiiier teeth will usually be very much more difficnlt than will a flaccid, slender patient with a long neck and u[)per teeth absent, liut it must be re- membered that there is absolutely no patient whatever, whose larynx cannot be exposed to direct view with the .sole exception of a i)aticnt ^ 12J: P]RKCT LARVXGOSCOrv. with ankylosed jaws, preventing the opening of the muutli. so that while the ease of exposure may vary within wide hniits, there is none m whom direct laryngoscopy is impossible. Failure to expose the epiglottis is usually due to too great haste to enter the speculum all the way down. The efforts should be rather to lift the tongue at its dorsum and gradually to slide the spatula down- ward so as to get into the glossoepiglottic fossa. When this is done, the epiglottis will loom large. In some cases the anterior one-third of the larynx does not readilv come into view, because it is drawn upon by the elevation of the hyoid bone. To expose this anterior one-third all the way to the anterior commissure, it is in some cases necessary for an assist- ant other than the one who holds the head to make counterpressure on the thyroid cartilage externally, pushing the larynx backward (downward in the recumbent patient). Either lateral wall can be made prominent, and the whole larynx can be fixed. To get the best results from counter- pressure, it is necessary to be careful that the direct laryngoscope is not too deeply inserted. It should not be deeper than is necessary to hold the epiglottis. In various laryngeal operations, this counterpressure by an assistant trained to the work, is of great help to the operator bv fix- ing the larynx, turning it to one side or to the other, as requiretl, to bring into view one or the other side of the larynx. Practice together on the part of the operator and his assistant, in this respect as in every other, will produce results by "team work" unobtainable in any other wa)-. In most instances the best results are obtained by having the as- sistant fix the thyroid cartilage in a vertical position, while the head, only, of the patient is turned over to the side opposite to that on which the growth is located. This side method of operating is shown for the sitting position in Fig. 80. It is relatively the same in the recumbent patient. After learning how, passing the tube at the side instead of over the dorsum of the tongue will render the most difficult case easy. The difficulties that pertain to the operator himself, are chiefly due to lack of practice. Absolutely nothing will dispense with the necessity of continued practice, and while much may be done, as mentioned under the head of acquiring skill, nothing will take the place of frequent work ui)on the patient in the recumbent position. As one of the greatest difficulties is caused by the spasmodic contractions, not onlv of the laryngeal muscles, but also of the muscles of the neck, and especiallv all of the muscles attached to the hyoid bone, it will be of great assistance if the operator can have the advantage of acquiring the knack of ex- posure of the larynx first in patients deeply generally anesthetized. One of the greatest difficulties of the beginner is in recognizing the landmarks. We are so accustomed to seeing classical pictures of the DIRECT LARYNGOSCOPY. 133 laryr.x during inspiration, expiration and phonalion, thai we are quite confused and discouraged when we do not sec such a picture by the direct method. It must he rememhcred, however, that in proceeding by the old inchrect method, observation is usually terminated when the patient has very much of spasmodic contraction about the pharynx and larynx, while in direct laryngoscopy these sjiasmodic contractions are no bar to a continuation of the examination; and we must learn to recognize the landmarks in the state of a high degree of spasm. This, of course, is especially necessary in working without any anesthetic, general or local, as in the case of children. We must therefore fix in our minds the previously mentioned landmarks, namely, the two rounded eminences, corresponding to the arytenoids. It is only on deep inspiration that aity- thing like a typical picture of the larynx will be seen. Therefore, we must terminate our search upon the identification of the two rounded masses and wait for the inspiratory opening to get a view of the in- terior of the larynx. Herein consists one of the great advantages of w^orking with local anesthesia. Should the patient be anesthetized, though not c|uite deeply enough to abolish the reflexes about the ])harynx and larynx, and especially if the patient has been given chloroform along with any of the opium derivatives, it is a very serious risk to wait very long for the glottis to open, ijccause of the paralyzing effect of choloro- form and the opium deri\atives upon the respiratory center. On the other hand, when a local anesthetic alone is being used, we can safely wait indefinitely for the patient to breathe, meanwhile telling him to take a deep breath and not to hold it, and reassuring him that he can get his breath perfectly well if he only will. It is only in infants and very young cliildren ih.it the injunction "keep on breathing"' will not he fol- lowed promptly by an inspiration, but as these are examined without any anesthetic, general or local, we can wait indefinitely for the opening in- spiration, excejit in very dyspneic cases. Hlbou'-rrst ['osltion. If the operator is not strong in tin- wrist and forearm he may exjierience fatigue in holding the lar\nx of the recumbent ])alient ex])osed for any length of time. ]>y this it is not meant that great strength is re<|uired. Like most similar procedures there is more in the knack than brute strength. If endurance is being taxed the aiUlii}r's elbow-rest position will enable the operator to work for any length of time that could possibly be needed for an endolaryn- geal procediue. The head hoard of the table is not dropped for this position. If ;dready dropjied the head board is raised to a level position. The operator's left elbow rests on the table beside the patient's head, the head being suspended on the tip of the laryngoscope. The operator sits on a stool at the head of the table facing towards the patient's feet. 126 DIRECT LARYNGOSCOPY. Suspension hirymjoscopy devised by Prof. Killian to render direct laryngoscopy in the recumbent position easier, will be treated in a separ- ate chapter by the great master himself. DIRECT LARYNGOSCOPY IN CHILDREN. For those who have practiced it, direct laryngoscopy in children, for diagnosis, is a simple, easy matter requiring but a minute or less. without anesthesia, general or local. On the other hand, for the be- ginner it may require twenty minutes at the end of which time he may not have had a good view of the larynx. The procedure is easily learned and for five reasons it is an absolute necessity that every laryngologist be able to make the examination without any anesthesia : 1. Anesthesia is unnecessary. 2. It is extremely dangerous in dyspneic patients. 3. It is inadmissable in a case which may jirove to be diphtheria. 4. If anesthesia is to be used, direct laryngoscopy will never reach its full degree of usefulness, because anesthesia makes a major pro- cedure out of a minor. 5. There is no more reason for anesthetizing a child to look at its larvnx than to anesthetize it to feel for adenoids with the finger. \\'hate\er may be said on the subject of anesthesia for bronchos- copy and esophagoscopy in children, no one can deny that the larynx of any child can be examined quickly, painlessl}' and satisfactorily with- out anesthesia, general or local. By this it is not meant that a diagnosis can always be reached, but the nature of dyspnea or croupy cough can almost always be determined. Seeing the larynx of an adult by the in- direct method does not always mean a diagnosis. Cocaine in children is dangerous and its application is more of an annoyance than the ex- amination. This matter has been more fully dealt with in the chapter on anesthesia. The brief mention here is to emphasize a matter in which there has been much misunderstanding and many misleading state- ments. In leaving the subject, the author wishes to state that any operator who uses a general anesthetic on dyspneic children will some day re- gret it, because of the death of a child from a needless procedure. If the operator must have a general anesthetic, he should do a preliminarv tracheotomy. Inslniinents. For a diagnostic direct laryngoscopy in children the following are needed : ] child's direct laryngoscope. 1 double bronchoscopic battery. DIRIX'T I.ARYNGOSCOl'V. 127 1 laryngeal alligator forceps, (Mosher's). 1 bite block. Tracheotomy instruments. These are the bare necessities. The author prefers to prepare for a bronchoscopy also, with sponge holders, sponges and bronchoscopic for- ceps complete, as will be given on a future page ; because very often the cause of the trouble may not be found in the larynx and not to inves- tigate the trachea leaves a doubt. If children be examined in the re- cumbent position and fasting there will be little trouble with secretions, consequently swabs and aspirators will not be absolutely necessary for mere diagnostic examinations of the larynx only. On the other hand, if the child has had food or water w'ithin four hours, fluid from the stomach will be plentiful. If examined in the sitting position, which is always inadvisable in children, there may be much trouble from fluids over- flowing into the larynx. I'nder no circumstances should the endoscopist start to examine a case of supposed foreign body in the lar_\ nx with only a laryngoscopic outfit. Everytiiing needed for a direct laryngoscopy, bron- choscopy and esophagoscopy should be ready in order to get the intruder wherever it may be. For operative work on the child's larynx, such as the removal of papillomata, we must add to the al>o\e list: 4 sponge holders. 2 dozen of !) mm. sponges. Tissue forceps. Tracheotomy instruments are listed and >iioiild always be sterile and ready. Xot that the procedure itself would ever, in any normal child, render tracheotomv necessary ; but so many of the diseases for which a child is laryngoscoped diagnostically are stenotic in character that the endoscopist should be prepared for a tracheotom\. Direct lar\'ngoscop\ of children as compared to direct laryiujuscopy of adults. A child is more difticult to examine without anesthesia than the easiest of adults with local anesthesia; but there is little difference between one child and another, and any child is easier without anes- thesia than the more difticult adults with good local anesthesia. An>- hnni.nn bein^, however, can be satisfactorily laryngoscoped directly if his mouth can be o|)ene(l. In children, the difliculties of direct laryngoscopy are not increased by smallness of the tube, for the lumen of the child's laryngoscope of the author's design, is plenty large ( 1 cm.l. Tiie dilti- culties lie rather in liie very flexible ejtiglottis of children, and the fact that the entire larynx, though relatively higher than in the adult, is more movable an, Mg. 91). Under these circum- stances, also, the cords may not be seen because they are covered by the spasmodic ckjsure of the n]>per orifice of the larynx especialK' the ven tricular band. .\t tiie next inspiration, liowe\er, the cords will sejiarate and a good view down the trachea can often be obtained in this way, elevating the larynx with tiie spatuLar end in the glossoejjiglottic fossa anterior to the epiglottis. .As a rule, however, this examination is not so satisfactory, and it is Ijctter to proceed at once, as in the adult, after identifying the epiglottis, as at .\, iMg. 9."i. to insert the laryngoscope sulliciently deeper to go posterior to the e]iiglotlis and lift it I in the re- ]30 DIRKCT LARYNCOSCOPV. cumbent position ) strongly as if to suspend the child by the hyoid bone, using only the tip of the spatular end on the posterior surface of the epiglottis. If the epiglottis slip away, the speculum must be inserted slightly deeper, but onlv enough to catch the epiglottis, and great care should be taken not to insert too deeply, as in that case the mouth of the esophagus will be entered and no amount of lifting with the tip will expose the larvnx, as before explained. \Mien properly exposed the child's larynx will look ver\- much elongated antero-posteriorly and the arytenoid eminences will project upward and outward like the arms of a thick ^'. From the top of the arms of the \', the aryepigluttic folds extend forward. The cords are very much deeper down and are only visible on inspiration. (C. Fig. U-") which also shows subglottic papil- iomata. ) If the larynx is lifted away from the posterior jiharyngeal Fig. 95. — -Direct laryngoscopic views in children. A. Epiglottis. B. Gluttis on inspiration, prevented from a wide inspiratory excursion by normal spasm at the presence of the instrument in an examination without anesthesia. A few moments later it opened widely, and subglottic papillomata are visible as shown at C. D. Indrawing of the upper laryngeal aperture in a moderate case of congenital laryngeal stridor, in an iufnnt of 11 numths. wall the \ may become a thick-based ^". This flaring shape of the up- per part of the posterior commissure is best understood by contrasting it with the incurved laryngeal aperture seen in congenital laryngeal stridor. (D, Fig. !l.") ). Plate 11 gives excellent views of the child's larynx. Siipraglottic tracheoscopy and subglottic laryngoscopy in children. Ordinarily the subglottic region can be seen well enough in children by the direct laryngoscopic method described in this chapter. If, however, more thorough study is desired, an excellent way to do it without pass- ing a bronchoscope into the trachea, as for instance in a case in which there is already slight subglottic edema that bronchoscopy wotild ag- gravate, is by what the author has called "supraglottic tracheoscopy" (Fig. 9(5). A short esoj^hagoscope. a tracheoscope, or a bronchoscope with the distal end not slanted is selected of a size too large to go niKKCT LARYNGOSCOPY. 131 through the glottis. W lien the mouth of such a tuhe is insertetl in the upper orifice of the larynx (heing introduced llirough the laryngoscope precisely as if doing a hronchoscopy ) it will hold the \()cal cords, ex- posing to view the entire length of the trachea, the vocal cords showing slightly at the edge of the endoscopic incture. (Fig. in;). It is neces- sary to make slight pressm-e on the tracheoscope, which must be too large to go through. This was discovered in one of the atUhor's earliest cases of foreign liodv. before he had [lerfected his equipment, auil the only instrument available in a distant city was a short traeheoscojje of 8 mm. internal diameter. .\ safety-pin was thus removed with a hook from tlie trachea of a twehe montlis old infant i I^)ib. 5iil). 'Po realize the mechanism of sujiraglottic tracheoscopy it is necessary to understand Fig. 96. — Endoscopic image ot)tained by supraglottic tracheoscopy. A tracheo- scope or esophagoscope or bronchoscope whose distal end is not slanted and whose diameter is too great to go through the glottis of the child is inserted in the upper orifice of the larynx which is thus propped open. The widely spread cords arc shown at the sides. This patient was suspected of having subglottic hypertrophy but on tracheoscopy was found to have a thymic compression stenosis. A lateral thymic comi)ression as lierc shown is exceedingly rare. Usually this form of com- pression is anteroposterior. the usually overlooked dejilli of the larynx above the cords. It is into this funnel that the iube-ni"Ulli is inserted. Supraglottic traclieos- copy could be used for the cauterization of subglottic hypertrophies but direct laryngoscoijy, as elsewhere explained, gives more lateral rt)oni in which to work. Supraglottic tracheoscopy is useful in ihj remo\al of long-pedii-led ^u!it;lottic growths that Hop ;ibo\e and below the rmia glcittidis. Iiu/:r,-rt Idryiiqoscopy '^■Ith tlic Hays ph(iryiiressed and the larynx engaged. PRi;r.\R.\Tiox 01- Tin-: p.\tient. Adults who are adaptable for the direct examination can be exam- ined by means of suspension-laryngoscopy, using cocaine .solely, although as a rule it is wise to administer a morphine injection ( O.Ol-O.fll.-)) half an hour previously. If one contemplates doing an operation which may C(jnsnme more time and may possibly cause pain, it is better to make use of the mor- phine-scopolamine narcosis. Scopolamine is lately furnished by the firm HofTmann-I,a Roche & Co., in Crenzach (1 laden t in permanent form under the name "sko])olamine haltbar, Roche." Three decimilligrams are hermetically enclosed in a small glass ampoule. This is the most suitable dose for our pur])0ses. The best [irocedure is to administer to the patient two hours lie- fore the suspension-laryngoscopy 0.01 gm. morphine and .(U)i)'.> dcmgm. scopolamine hy])odermically. (Jne hour later the same (iuantit\- of both substances is again administered. The patient must recline in a quiet place, so that he will go to sleep. In most cases the numbing is only in- complete. I'liit the patient is in such condition that he undergoes the ex- SrSPlCNSION I.AKVNC.OSCOl'Y. 143 amination witliout resistance and also bears it longer. It is necessary, too, to pencil (he larynx with cocaine before using the s])atula. The reflex- irritability of the pharyngeal and laryngeal mucous membrane is not entirely eliminated by the morphine and scopolamine. Children and young persons must not receive any nmrphine-scopo- lamine. In childhood it is best to use ether or chloroform narcosis or a mixture of both. It is i>referable to use the llraun insufflation-apparatus, because wi'h it one more rapidly attains a sufficiently profound narcosis, and above all, because the narcosis can easily be maintained sufficiently profound during the manipulation in the neck. (Fig. 11!)). To hold, a mask before the face from time to time during the examination causes 1 _1^ Fig. liS too much interrnjition. Uul when one forces llu' clhcr nv chlorolunn in- to the de])ths with the insufflator as nuich will be inhaled as is re(|uired to maintain an ecjuable, deep narcosis. In children, too, it is to be recommended to pencil ihe larynx with cocaine, lly cocainizing, one avoids the reflex interference with breath- ing which occurs in some cases when one touches the interior of the larynx with an instrument. I generallx' use the laryngeal mirror and the Kirstein head-lam]) when ])enciling llie larynx in a'1. The head hangs free- ly suspended from the tongue-spatula : the mouth is held open by the handle with the tooth-plate. The portion of the hook bearing the screw extends approximately in a perpendicular position. The hook itself is turned sharply backward and so is suspended from the gallows. One sees the larynx as in Figs. 123 and 123, Plate IV. D — DEM0NSTR.\TI0X I.X SUSPEXSK.IX L.\KYXGOSC()PY. The new method is particularly adapted for demonstration. If the pharynx and larynx are engaged the demonstrator has nothing to do but make the necessary explanations. The pupil readily grasps the sub- ject because he sees the parts directlv before him. As above mentioned, it is best for such demonstrations to use a miniature electric lamp at- tached to the toothplate of the instrument. When the lar_\nx is engaged during suspension laryngoscopy it is very easy to manipulate its interior. One can demonstrate this to the pupil by putting a probe in his hand and having him touch designated points. Minor operations, for instance the removal of a polyp, can be dem- onstrated without much trouble. If the ])atient is under skopolamine- morphine "twilight sleep," the demonstration may be made, without hesitation to a very great number of physicians and students. E — CLINIC. \I. KXPKRIKNCKS WITH SUSPEXSIOX-L.VRVXCOSCOPY. Suspension-laryngoscopy has been successfullv applied in practice both in diagnostic and therapeutic respect by my jjupils and b\- me as well as by a list of authors. It is used diagnostically especially in child- hood and particularly in all those cases where we are comjjelled to re- sort to direct examinations. Its execution is so simple that I believe it will soon replace direct laryngoscopy. We often have occasion to make SrSI'K.NSIIlX l..\U>\('.0SCO['Y. 147 minute examination nnder narcosis in voc-ai and resjiiratory distnrliances in oliildrcn. One mnst determine if there exist a simple iciite catarrh, a sub-glottic swelling, a croupous or di[)iulieritic process with forma- tion of pseudo-membrane, a jierichondritis. or if there be a foreign body present whether there be a chronic laryngitis, formation of nodules on the vocal cords, papillomata, tuberculosis or syphilis. ICven cases of dit'licult decanulement or congenital changes in the lar>n\ may be con- veniently examined in su.spension. 1 sliould like even at this stage, to recommend this procedure as a preparatory step for bronchoscopy and esophago.seopy in small children. With suspension-laryngoscopy one engages the larynx and then inserts the bronchoscopic or esophagoscopic tube into the deiiths. Narcosis can be maintained without special dan- ger. ScilTert has shown that artificial respiration may be accomplished 148 SUSPENSION LAKVNGOSCOPY. with the horizontal suspension-hook. One must never neglect to co- cainize the larynx before inserting the instruments in order to eliminate the vagus-reflexes emanating from the laryngeal mucous membrane. With the introduction of a cold instrument into the uncocainized larynx temporary discontinuance of respiration may very readily occur. THKR.'VPECTIC .\PPLICATIOX OF Sl'SPENSION-LARVNGOSCOPV IN CHILDHOOD. a. Foreign Bodies. Davis removed a safety-])in from the pliaryn.x of an eleven-months- old child under suspension-laryngoscopy. My pupil, ^^'eingaertner, re- centlv succeeded in extracting a piece of bone which was lodged partlv in Fig. 125. the phar\nx and partly in the entrance to the lar\nx of a child one and one-half years old. Seiffert reports the removal of a flat bone from the sub-glottic space in a child of five years. Iglauer removed a piece of safety-pin which had been lodged in the larynx of a child for five months. All observers state that the location and extraction of foreign bodies offer no special difficulties. The condition is probably the same with deep-seated foreign bodies whether lodged in the esophagus or in the larynx or bronchus. A tube is projected into these organs — a very simple procedure during suspension-laryngoscopy. By means of suspension- laryngoscopy I succeeded in locating in and e.xtracting from the right bronchus a metallic capsule. In the same manner I removed a nail which had been lodged for a year in the left bronchus of a two-year-old child. Both cases impressed upon mc that this sort of bronchoscopy is easier and better. SUSPENSION I.AKYXC.OSCOPY. 149 l.AKVNCKAl, I'AI'IIJ.OMATA IN CIIII.DRKN. In my clinic we were able to gather extensive data bearing on this affection and its treatment. Albrecht has frequently and minutely re- ported on it. The new method not only permits a certain diagnosis but also a radical removal. Even if the larynx is entirely filled with papil- lomata, one can remove everything at one sitting, if the children are already dyspnoeic, suspension-laryngoscopy may still be carried out. Obviously the tracheotomy instruments must be in readiness. If one has succeeded in api)lying the suspension-hook one need no longer fear m= Fig. 126. Fi^. 127. asphyxiation, for one caii w ithout furtlu-r ado insert a bronclioscopic tulie through the larynx and wait until respiration is again in progress. The larynx is always readily accessible in suspension. Obviously one must use narcosis. There is no conlra-indication to repeat such sittings. As the i>apillomata readily recur, many cases re(|uire numerous sittings, sometimes even a long series of such. Sometimes one succeeds by means of internal remedies, such as i(>(lide of potassium or arsenic, to prevent recurrences. Penciling with l«» ])er cent salicyl-alcohol has also been recommended. 'i"he mesolhoriuni-treatment as a remedy against recur- 150 SUSPENSION LARYNGOSCOPY. -_-:#?» Fie. 128. SL'SPENSIO.V LARYNGOSCOPY. 151 rences appears to me to be one of the most promising. However, we have not yet gathered any particular experience. Albrecht has succeed- ed in removing papillomata in a large number of children. Others, too, have reported favorably upon the application of suspension-laryngoscopy to the removal of papillomata. as Wolff, Kleestadt. Mann and Katzen- stein. Seiffert mentions a case in which tracheotomy was indicated but in which it was possible, by removal of the papillomata, to avoid that operation. Kahler has removed numerous papillomata from the hypo- ])liarynx and eso])hageal entrance of a three and one-half year old chikl. NODULKS Ol-" VOC.\L CORDS. Xoduk's upon llie vocal cords of children arc not at all rare. They are usually accompanied by a slight catarrh and cause a permanent hoarseness. ( )ften we have to deal with children who suft'er from im- perfect nasal respiration in consequence of hv|)ertrophy of the pharyn- geal tonsils, turbinal swelling and septal deflections. Frequently one can prove that the children have cried very much for a long period. Most young patients do not permit intcrveiUions in their larynx. One can therefore only work by the direct method under narcosis. Sus- pension-laryngoscopy is particularly ada])ted for this, as has been em- phasized by Seift'ert and b\ Katzenstein. M\- best results have likewise been with this method. The nodules are removed with a small forceps or a small guillotine. In diphtheria, in s_\pbilis ami in tulierculosis in children, suspension- laryngoscojn- is chiefly used merely for diagnostic purposes, although we have already begun to make curettements and excisions in rare cases of laryngeal tuberculosis. Difficult decanulement should more frequently prompt us to undertake susjjension-laryngoscopy. As has been proved one can thus readily obtain a clear view of the larynx. One can also as- certain the conditions in the subglottic region and granulation- formation over the canula. It may become necessary to insert a lube thrciui^h the rima glottidis in order lo approach these granulations. I'.\en Seilfert rejjorts a case with subglottic granulations. TNTKKVICNTIONS IN Tl I !■: OKo-l'l I AUV N \ A.M) IN T 1 1 I'. i:S(il' M ACTS. .\lbrecht. h'reudenthal .-nid 1 |H-rforme(l tonsdlectoniies in small chil- dren imder narcosis by use of a broad tongue-spatula with the susjien- sion-hook. When one works on the suspended head one sees the tonsils reversed. Their up|)er pole appears to be below. (")ne must therefore accordingly change the technique. Tt is very convenient that luniorrliage causes no great trouble. The blood flows into the naso-phar\n.\ and cm be drawn by suction from there through the nose. 153 SUSPENSION LARYNGOSCOPY. SUSPENSION-l.ARYNGOSCOPY IN ADULTS. In the adult suspension-laryngoscopy is chiefly used in tuberculosis of the larynx, especially when one contemplates curetting a diseased por- tion. One will decide in favor of this method, especially in the cases of advanced laryngeal tuberculosis, for it puts us in position to undertake extensive work at one sitting, to curette, to nip off or even to make one or two deep galvanic punctures. It is very important that phthisic pa- tients who are to enter a sanitarium be relieved of the most pronounced changes in the larynx. Suspension-laryngoscopy can be carried out under local anaesthesia in such cases following administration of one morphine injection. In or- der to reduce the great reflex irritability of the tuberculous larynx, how- Fig. 129. ever, it is advisable in just such cases to make use of the skopolamin- morphine "twilight sleep." We have never seen serious disadvantages from it. On the other hand, narcosis does not seem to be especially w-ell borne by some tuberculars. When a tuberculous larynx has been engaged with the suspension- hook, it is advisable to attach a glass shield to the gallows before be- ginning the currettement so that tuberculous material may not be coughed into one's face (compare Fig. 1?4). For curettement I have had a reversible curette constructed (Fig. 125). The nipping off of infiltrations and granulations is done with the ordinary double-curette for direct operations (compare Fig. 12G and 127). In cases of hemorrhage, clamps may he applied ( Fig. 128). The galvano-caustic deep puncture may be executed with great se- curity. An ordinary pointed cautery electrode which must be at least SUSPENSION LARYNGOSCOPY. 153 20 cm. in lenglli is used for this purixisc. 'i'heii tliu larynx is painted with hydrogen peroxide and insulHated w ith \ ioform or anesthesin. The subset|iient manii)iilation in the larynx must be under guidance of the laryngeal mirror, .\ftcr maior incursions oedema mav readily Fig. 130. occur. For successfully combating such incidents we now have an ex- cellent remedy in the hot-air-chest of .Albrccht which can be used again the same day if necessary. (Fig. 12!)). Temperatures up to 110 degrees Celcius can be aiiplied. 'i'be skin of the neck bears this dry heat very well if the chest is well lined with asbestos-fibre. A strongly active hy- peraemia results and the oeclemas are re-absorbed. The [iroccdure has an anodyne effect. Of course the jiatient always complains of pain dur- ing the first few days. This is caused not alone by the wounds in the larynx, but also by the [jressure-elTcct of the lingual and lar\ngeal spat- ulas. One also frequently observes temperature-elevations of minor or 154. SUSPENSION LARYNGOSCOPY. greater degree, which \ery readily occur from \arious causes in tuber- cular patients. They soon subside. I prefer in the after-treatment, to give iodine internally and peroxide of hydrogen locally. It is also ad- vantageous to continue treating the cleansed wounds of the larynx with lactic acid. Obviously the result of such operative treatment depends upon the state of the lungs and the general condition. Patients who can imme- diately receive sanatorium treatment have good chances of cure if the larynx be primarily aiTected. By adopting radical measures in the larynx, tracheotomy has often been obviated ( Holscher. Seiffert, Freudenthal >. Exposure of the tuber- culous larynx to Roentgen-rays through the lumen has also been success- fully accomplished in suspension-laryngoscop}- by Brieger and his pupil. SeifYert. In difficult cases of pol\ps of the \ocal cords, especially when the polyps were located far anteriorly. Hoelscher and Steiner used suspen- sion-laryngoscopy with the best results. E. Allayer has successfully re- moved a carcinoma of the epiglottis under suspension-lar\-ngoscopy. It has further been applied in scleroma, and even in hysterical aphonia. A new field has arisen for it in mesothorium treatment of laryngeal- carcinoma, about which I have recently made a report. I'.y means of suspension-laryngoscopy not only can the small mesothoriuni-capsule be applied lo the diseased spot introduced into the carcinoma under skopo- iamine-morphine narcosis, but especially the sitting ma}- lie extended sufficiently long. The patient may be left in suspension one hour, or even one and one-half hours (probably even longer) without compunc- tion (Fig. 1 :!()). The mesothorium-capsule is provided with an aluminum-filter at- tached to a cord and inserted into the lar\-nx with an ordinary claw- force])s. Tlie instrument is secured with cords or clamps. Thus it will remain quietly in position the entire time. During the first days there is generally a light infiammatory reaction, but the improvement in the carci- nomatous condition is soon apparent. Suspension-laryngoscopy is peculiarh- adapted for examining and treating operatively changes in the lower pharynx. True, one ordinarily requires the additional help of a dilator to separate the larynx from the spinal-column. Seiffert has reported more in detail regarding this as- pect. I am not able, at this time, to state how extensively esophagoscopy may be used in the adult in suspension. Apparently this procedure is of great advantage in the removal of voluminous foreign bodies which are wedged within range of the esophageal opening or immediately below it (Brieger). Seiffert reports the removal of a coin from the hypopharynx in two small children. He also was successful in the remoxal of a lijioma from the hypoph.-uwnx during suspension. CHAPTER IX. Introduction of the Bronchoscope. The descrii)lion of the intruducticjn of the bronchoscope given in some of the text-books woultl lead one to suppose that the procedure is difficult and some books e\en go .so far as to say that, if after fifteen minutes' trial the operator fails to introduce the instrument, a tracheot- omy should be done for introduction. This state of affairs is almost in- conceivable. Xo one should do lironchoscopy until he is able laryngos- copically to exjjose the glottis with the left hand in not more than one minute, and having learned this, it ought not to reijuire over one min- ute more to introduce the bronclioscope into the trachea. The usual time should be from fifteen to thirtv seccMids, depending on how long the patient holds his breath (if not anesthetized), before taking a deep inspiration. This length of time applies to infants as well as adults. Whatever may be said of the difiiculties of bronchoscopy in infants, be- cause of the smallness of the tube, it does not apply to the introduc- tion of tlie bronchoscope by ihe auilun's method, because of the large diameter of the author's laryngoscope for infants (12 mm.). This size is [jossible because the laryngoscope by the author's method does not go through the larynx — simply exposes its upper orifice to view. Once tiie larynx is properly exposed there should be no diriicuity in introducing even the 4 mm. tube. This is not mentioned jjoast fully nor as urging hasty procedure: but rather to urge the necessity of abundant practice in left-handed larxngoscopic exposure of the glottis. INTRODUCTIO.N Ol' Till-; nUONCHOSCOPK, P.STIKNT SITTING. I'or the nitroduclion of the bronchoscope in the sitting position, the patient is usually locally anesthetized, the details for which are given in a sc])arate cliai)ter. This position is advisable only in adults and only for diagnosis. The position of operator, patient and assistants is pre- 156 INTRODUCTION OF TEIK BRONCHOSCOPIC. Fig. i,;i. — Schema illustrating oral bronchoscopy. The portion of the table here shown under the head is, in actual work, dropped all the way down perpen- dicularly. It appears in these drawings as a dotted line to emphasize the fact that the head must be above the level of the table during introduction of the broncho- scope into the trachea. A, exposure of larynx. B, bronchoscope introduced. C, slide removed. D, laryngoscope removed leaving bronchoscope alone in position. The handle of the laryngoscope in C and D should be shown as rotated down to the left as shown in Fig. 131a. INTRODUCTION OK THE BRONCHOSCOPE. 157 cisely the same as for direct laryngoscopy, as shown in Fig. 70 and de- scribed in the adjacent text. After the larynx is exposed as there de- scribed the introduction of the bronchoscope is precisely the same as in the recumbent position, so that the one description of the procedure will answer for both. The only difference is that the laryngeal image is sagitally reversed. INTRODUCTION OF THE BRONCHOSCOPE. RECUMBENT P,\TlENT. The patient being in the Boyce ])Osition, as illustrated in Figs. 72 and 73. the glottis is exposed with the larj-ngoscope as shown in Fig. z'\ / I I X Fig. i.5la. — Before removing tlie slide the handle of llie laryngoscope should be moved to the left from position Z to position X, rotating the laryngoscope 90 degrees on its tubular axis (Y). This movement clears the slide of all contact Eo that it comes of? quickly. Used thus, the regular laryngoscope (Fig. 14) is preferable to the side-slide or any form of open laryngoscope for the introduction of bronchoscopes. 02. of which A, Fig. KM, is a reproduction. The same thing is shown in Fig. I.'i3. 'i'he ojjcrator watches the larynx which is brilliantly illu- minated by the light of the laryngoscope, while the first assistant hands him the bronchoscope lighted with its own lamp. ( Xo warming or oil- ing is necessary). The inslrunicnt is jiassed to the operator, properly pointed toward the proximal end of the speculum so that llie operator has but to reach up his right hand, grasp tlie bronchoscope and start it in, catching the handle of the bronchoscope that is passed to him by the assistant. The bronchoscope is inserted with the handle horizontally to the right (Fig. l-M.'!). The eye is now transferred from the laryngo- scope to the bronchoscope, and the bronchoscope is advanced until the ]58 INTRODUCTION OF THE BRONCHOSCOPE. Fig. 132. — Exposure of the larynx of the recumlient patient. The operator is lifting stronsly in the direction of the dart. Vti': 133. — Insertion of the bronchoscope. Note direction of the trachea as in- dicated by the bronchoscope. Note that the patient's head is held above the level of tlie table. The assistant's left hand should be at the patient's month holding the bite-block. This is removed and the assistant is on the wrong side of tlie table in the ilhistration in order not to hide the position of the nperatnr's liands. Note the handle of the bronchoscope is to the right. INTRODUCTION 01' THIC BKONCIIOSCOPK. 35D inner end approaches (|uitc closely to llie jjlottis. If no anesthesia is used, it is to be iireferred thai the distal end of the hronchoscope does not touch tlie larynx lest an excess of spasm be excited, which would de- lay the insertion. The handle of the bronchoscope is now moved slightly to the right so as to throw the lip of the slanted end over into the median line of the glottic chink, as will be understood from Fig. i:vl. This Fic. 134. — Schema illustrating tlic introduction of the lironchoscope through the glottis, recumbent patient. The handle, H, is always horizontally to the right. When the glottis is first seen through the tube it should I)c centrally located as at K. At the next inspiration the end, B, is moved horizontally to the left as shown by the dart, M, until the glottis shows at the right edge of the field, C. This means that the point of the lip, B, is at the mcilian line and it is then quickly (not violently) pushed through into the trachea. At this same moment or the instant before, the hyoid Ixine is given a (juick additional lift with the tip of tlie laryngoscope as shown by the dart (Fig. 132) and at A in Fig. 13T. In the sitting patient everything is the same except that the larvnceal image is reversed sa'.^illally .lud laterally. sliding over should preferably be done at the moment that an inspira- tion starts, so that the bronchoscope can be, at the same time, inserted through the glottis. Herein lies a great advantage in the slanted end, because it is very much easier to insinuate the li]) of the slanteil end through the chink, than to insert the end of a tube which is scpiarelv cut off. Care should be taken not to allow the lube to become hooked 160 INTRODUCTIOX OF THE BRONCHOSCOPE. over the arytenoid, though there is less Hkehhood of this in bronchos- copy than there is in esophagoscopy. Ko great force should be used, because if the bronchoscope does not go through readily either the tube is too large in size or it is not correctly placed. On the other hand, the tube does not normally go through without slight resistance, and the laryngologist or rhinologist who has been trained to manipulative pro- cedures, will very readily determine by his sense of touch the degree of pressure necessary, and will not use a degree that will inflict trauma. If the attempt is made to insert a 5 mm. tube through the glottis of an infant under one year, there may be considerable resistance, and if so, subglottic edma is quite likely to follow forcible introduction. On the other hand, a -i mm. tube should go through with practically no resist- ance, if properly placed. Once through the glottis (B, Fig. lol) the direct laryngoscope should be removed as shown schematically at C, Fig. ]31. The laryngoscope is turned sidewise just before removal (Fig. 131a) so that the slide will not impinge on the upper teeth. Care must be taken that the bronchoscope is not allowed to be cotighed out during the re- moval of the speculum. The bronchoscope is most easily held in place by the thumb of the left hand of the operator, while the thumb and finger of the right hand are used to remove the slide. At the moment of in- sertion of the bronchoscope through the glottis, an especially strong upward lift with the beak of the spatula is usually necessan,' in order to permit the brcinchoscope to be given also a forward t'.lt into the glottis This prevents the bronchoscope reaching the posterior slant of the party vi'all which would drift it off into the esophagus. The distance of in- sertion of the bronchoscope into the trachea before removal of the speculum is to be determined by experience. Usually if it has passed two or three tracheal rings it will be found sufficiently deep. In case a foreign body is expected to be located in the trachea, it is better not to exceed this, lest the foreign body be dislodged and move downward. For the same reason, the trachea should always be carefully in- spected with the direct laryngoscope before attempting to insert the bronchoscope, unless there is very serious dyspnea. It is very neces- sary to be certain that the axis of the bronchoscope corresponds with the axis of the trachea, before, as well as after, the bronchoscope is in- serted, otherwise the distal end of the bronchoscojje will impinge on the tracheal mucosa, inflicting trauma which is one of the factors in the production of subglottic edema. In this connection it must be repeated here that the direction of the trachea is not perpendicular to the long axis of the body, but that it follows the thoracic spine backward as well as downward, as seen in the schema. Fig. (il. To get this direction, in the recumbent patient, the patient's head must be elevated, and at the same INTRODUCTION OF THE BRONCHOSCOPE. 161 time It must be closelv observed that the patient's head is neither ro- tated nor bent to one side or the other. The accurate placing of the head will be watched carefully by a trained assistant, but the operator should also, without direct looking, be able to determine, in a general way, the position of the patient's head and neck. The better the second assistant and the longer he and the operator have worked together, the better the work they will do and the more the operator will come, un- consciously, to depend upon the assistant to keep the head in position. Difficulties in the introduction of the bronchoscope. The foregoing is a description of how to introduce the bronchoscope, and if closely followed, no one after a little practice should have any difficulty in the introduction in a patient fully relaxed by a general anesthetic. If any serious ditliculties are met with, some of the details have been over- looked, such as full extension of the head, elevation of the head, lift- ing strongly with the tip only of the laryngoscope at the moment of in- sertion of the bronchoscope in the glottis. ^ The beginner will occasionallv enter the esophagus instead of en- tering the trachea. This is a verv dangerous accident, in dyspneic cases, not only by default in not entermg the trachea, but directly by compres- sion of the trachea through the bulk of the esophagoscope in the eso- phagus. Under normal conditions, if properly passed, an esophagoscope docs not compress the trachea to any appreciable extent, as the author has previously demonstrated by inserting, at the same time, the broncho- scope in the trachea and an esophagoscope in the esophagus ; but in dysp- neic cases, it takes but very little displacement of the esophagus to in- crease the dyspnea to the point where respiration will be arrested. For another reason it is essential to avoid putting the bronchoscope into the esophagus accidentally first before introducing it into the larynx, because, if properly done, the bronchoscope can be introduced through the laryn- goscope without coming in contact with the secretions contaminated from the mouth. The trachea is not a septic canal, while the esophagus swarms with bacteria. Getting into the esophagus is simply due to the neglect of some of the details just mentioned, especially insufficient glot- tic exposure and defective position with failure to lift strongly with the spatular tip at the moment of passing the glottis. It is not always as easy as might be supposed to detect the entrance of the bronchoscope into the esophagus. There is a very distinct respiratory movement to the esophagus, but it is in no way equal to the ex[)iratory tracheal blast and the ])ink, smooth, collapsing walls of the esophagus are in marked contrast to the normal trachea in which the rings of slightly deei)er color contrast with those of the almost white nuicosa covering the cartilagi- nous rings. In a state of disease, lK)wever, the tracbeal nuicosa may be so 162 INTRODUCTION OF THE BRONCHOSCOPE. swollen and edematous that tlie rings are obliterated, and in children there is more or less collapse of the tracheal wall during expiration, es- pecially the forced expiration of cough, as illustrated in the section on the normal bronchoscopic image. In the esophagus there will usually be a free flow of secretion in the distal end of the tube, which obscures the field : and the secretion usually flows also through the lateral opening of the bronchoscope. There mav be secretions in the trachea, but it is seldom the free flow that is seen in the esophagus. The main point of distinction, however, is the tracheal blast, if the patient be breathing or coughing. In cases of respiratory arrest, there is usually no spasm what- ever, and the freely open trachea is readily recognized. In such cases, however, the error of inserting the bronchoscope into the esophagus may prove fatal to the patient ; not only by default in not getting prompt aeration and oxygen insufflation, but also by the bulk of the bronchoscope in the esophagus compressing the lumen of the trachea. In working without an anesthetic, general or local, this danger is practically nil. If the patient is profoundly anesthetized, there is no halting of the rhythmic respiratory excursion, and the bronchoscope is verv readily in- troduced through the glottis without the slightest resistance. If, how- ever, the patient is insufficientU anesthetized, either locally or general- ly, and especially if unanesthetized as in children, the glottis may re- main closed for a considerable length of time. In tracheotomized cases the glottis may remain closed indefinitely, and the bronchoscope should be insinuated through without waiting; but in untracheotomized cases, if not dyspneic, it is better to wait for the relaxation of the spasm and opening of the glottis that comes with the first deep inspiration. In old- er children, or in locally anesthetized adults, the command to take a deep breath will usually be obeyed, especially if the necessity for deep breath- ing has been repeatedly urged from the beginning. It is not advisable with an incompletely anesthetized patient, especially if chloroform has been used, and still more especially if both chloroform and morphine have been used, to wait too long for the glottis to open, as the respira- tion may cease. In these cases it is better to push the bronchoscope through. In all dyspneic cases the opening of the glottis should not be awaited for more than a few seconds. The bronchoscope should be pushed through, not violentlv or roughly, but with the firmness and pre- cision gained from the knowledge that the tube is the right size for the patient, that it is properly placed, and that the patient is in the correct position. \^ery often I have found that the difticulties which beginners have encountered in inserting the bronchoscope have been due to the use of a gag. Very wide gagging will render the insertion of a bronchoscope, or INTROUL'CTIOX OF THlv URONCHOSCOPE. 163 even the exi)osiire of the larynx, difficult if not impossible. There is no need for a gag for any other purpose than simply to prevent the pa- tient biting the tube, and for this the bite block, shown in Fig. 39 is ideal, because it is readily held in place at all times by the first finger of tl;e second assistant, and because it does not slip, regardless of how- imperfect the patient's teeth may be. E.vploration of the trachea and bronchi. After the bronchoscopic tubc-niouth has entered the trachea there will usually be encountered more or less secretion, according to the nature of the case, the anesthetic and drugs used. etc. This secretion must be removed at once, before any deeper insertion of the bronchoscope is made in order that we have the safety of sight. In foreign-body cases this is especially necessary lest the intruder be pushed down. For the same reason, sponges must be in- serted only just beyond the tube-mouth, which distance can be determined by the sensation imparted to the finger and thumb when a properly fit- ting sponge emerges from the distal tube-mouth. Having removed the secretions by the author's "sponge pumping" process in the manner illustrated in Fig. '2'>, and explained under "Aspirators," the broncho- scope is carefully advanced. If the bronchoscope or the trachea become filled with secretion coughed from the lower air passages, advance of the tube must be stopped as often as necessary until the secretion is re- moved, lest a foreign body be overridden or a diseased area be over- looked. While it is true that the tracheo-bronchial tree is very elastic, and consequently will adapt itself in a wonderful degree to the faults' direction of the bronchoscope, yet it is essential, wherever possible, to follow the lumen as it opens up ahead of the tube mouth. As has just been said, a well-trained assistant will at the introduction of the bronchoscope have the head so held that the trachea will be in line ahead of the bronchoscope. In the further exploration of the tracheo- bronchial tree, the second assistant should busv himself with making sure that the head is so held that the lani'ux shall in the least possible degree become the fulcrum upon which the bronchoscope rests. In other words, when the position, into which the operator in pursuit of the lumen swings the bronchoscope, causes the bronchoscoijc to bear upon the larynx as a lever upon its fulcrum, the laryngeal fulcrum should be eased off for two very important reasons : 1. An unyielding laryngeal fulcrum limits exploration because of its distance from the upjier thoracic aperture. 2. If the larynx is not eased away when fulcral pressure comes ui)on it. this pressure will cause subglottic edema. Therefore a fundamental rule which must be rigidly observed by the bronchoscopist and especially by his second assistant is: The fid- 164 INTRODUCTION OF THE BRONCHOSCOPE. ciuDi of the bronciwscopic lever is at the upper thoracic aperture; never at the larynx (Schema. Fig. IS.J). To accomplish this the head and neck must gently be made to fol- low the direction of the proximal end of the bronchoscope. The freedom of movement of head and neck, with synchronous undistorted status of the thoracic cage requires the Boyce position. In no other way can the same results be accomplished. The nearest ap- proach to this position as to movability of the head and neck is the lateral recumbent position, which is very objectionable because of the varj^ing position of the thorax, the less manageable head, and the inconvenience in the exploration of the uppermost lung or the alternative of turning the Fig. 135. — Illustrating the fallacy of supposing there is a wider range of move- ment possible by tracheotomic than by oral bronchoscopy. If the larynx were rigidly fi.xed at L, the lateral range of movement possible would be relatively slight as compared to tracheotomic bronchoscopy. But by bending the neck sharply to one side we bring the larynx from H to E, permitting the use of the entire upper thoracic aperture. This illustration also shows how the second assistant by easing away the lar3-nx from H to E makes the upper thoracic aperture the fulcrum of the bronchoscopic lever instead of the laryn.x, thus preventing undue pressure on the larynx and consequent subglottic edema. patient — a time-wasting procedure that is intolerable to anyone who has experienced the comfort, satisfaction and facility of work in the Boyce position of the patient maintained by an assistant who has worked a long time with the operator. To accomplish the making of the upper thoracic aperture (instead of the larynx) the fulcrum of the bronchoscopic lever, the second assistant must have a good general sense of direction and must have a mental pic- ture of the position and direction of the long axis of the part of the tube in the patient which he must gain from the uninserted portion of the tube. If the tube is deeply inserted he must mentally "'line up" the position of the bronchoscope in the patient from an imaginary line drawn from the proximal tube-mouth to the bronchoscopist's right eye. This IXTKODL'CTION Ol" Till-: nKONCUOSCOPli. 165 line must necessarily be a prolongation of the long axis of the bron- choscope. The axial line of the tube and the upper thoracic aperture and their relations to each (jUkt must be constantly in the mind of the second assistant. In the descriptions before and hereafter given of various positions of the head and neck it is to lie understood that these in no way inter- FiG. 136. — Radiograph of bronchoscope in the right upper lobe bronchus of a woman of 25 years. The bronchoscope was inserted through the mouth and the angle is shown to be as advantageous as would be possible through a tracheotomic wound. The position of the patient is easy and natural in this instance, the radio- graph being made for verification of the overlay localization in a suspected case of interlobar al)scess. Had demonstration been the object, the upper part of the lube could easily have been l)rought to the clavicle. The lesser shadow passing down- ward is from pus and shows the location of the middle and inferior lobe (stem) bronchi. This radiograph also shows that the limit of lateral movement is fixed by the upper thoracic aperture; not by the larynx, hence tracheotomy is of no ad- vantaf^e for bronchoscopy, so far as angle is concerned. fere with the endnscopist following lln' lumen unr the second assistant following the operator. "S'et it is necessary to know, in a general wa\', the jwsitions of the patient's head and neck that will be re(|uire(l prop- erly to enable a correct presentation of the desired objective point. With all the foregoing clearly in the mind of operator and assistant we are readv to proceed down the trachea, determining as we go the 166 INTROOrCTlON OF THE BRONCHOSCOPE. proper direction by endoscopic watch of the wall of the trachea as it opens up ahead. The endoscopist should not see either wall more than the other, but with a properly directed tube should be looking directly downward into the tracheal lumen. If he sees the anterior wall, which is the usual fault, the patient's head must be elevated. If he sees one lateral wall or the other, the patient's head must be brought to the middle line. If he sees the posterior wall, which is a very rare thing, indeed, with the beginner, the head may be lowered. Of course these remarks should not be applied too strictly to cases in which a careful inspection of the tracheal wall is desired ; but even in such cases it is far better to examine the general lumen of the trachea downward before making a minute inspection of the lateral wall, because it is only by keep- ing the lumen straight ahead that one can determine small degrees of compression or slight amounts of such diseases as perichondritis. In passing down the trachea the following two rules must be kejJt in mind : 1. Before attempting to enter either main broueJnis the earina iiutst be identified. '2. Before entering either inuin bronchus the orifices of both should be identified and inspected. These are time-saving and localizing ex])edicnts of the utmost ini- ])ortance. For quick, accurate and efficient work the bronchoscopist must at ail times know exactly the particular part of the tracheo-bronchial tree that is being explored by the tube-mouth. With a natural faculty of orientation, a practical working-knowledge of the average distances, and familiarity with the endoscopic appearance of the few landmarks this is easy. These things cannot be gained from a book. It is useless to memorize arbitrary measured distances. The practical working-knowl- edge is best obtained from a wet anatomical preparation by draining out the fluid and then passing the bronchoscope, studying together the en- doscopic and external anatomy of the dissected tree from which the lung tissue has been remo\ed at the root of each lung. In doing bronchoscopy on the living, after the laryngoscope is removed, the bronchoscope, which was held in the right hand for in- troduction, is now held between the thumb and finger of the left hand, tile second and third fingers of which are hooked by their terminal phalanges over the upper teeth (Fig. l.'iT ). This steadies the hand and any desired depth of bronchoscopic insertion can be maintained indefinite- ly with ease and accuracy by the left hand alone. This serves two very im]:'ortant purposes: 1. The exact desired relation of the tube-mouth to a foreign body (or tumor) can be preserved exactly for the applica- tion of the forceps. 2. The right is free for the [prompt use of the for- INTRODl'CTIOX 01' TIIK liRONCIIOSCOPE. 167 ceps, as soon as the desired tubal position is established. The author believes these two factors contribute largely to the success attending work with distally lighted tubes. A heavy handlamp prevents this anchoring of the tube in a tixed position by the fingers of the left hand on the teeth. Hence, the slightest movements of the patient, e\en the respira- tory movements, may disturb the relations which are relied upon to Fir,. I,?-. — The heavy laryngoscope has 1)cen removed leaving the light broncho- scope in position. The operator is inserting forceps. Note how the left hand of the operator holds the tube lightly between the thumb and first two fingers of the left hand, while the last two fingers are hooked over the upper teeth of the patient "anchoring" the tube to prevent it moving in or out or otherwise changing the re- lation of the distal tube-mouth to a foreign liody or a growth while forceps are being used. Thus, also, any desired location of tlie tube can be maintained in syste- matic exploration. The assistant's left hand is dropped out of the way to show the operator's method. The assistant during bronchoscopy holds the bite-block like a thimble on the index finger of the left hand, and the assistant should be on the right side of the patient. He is here put wrongly on the left side so as not to hide the instruments and the manner fif holding tlicm. facilitate the accurate application of the forceps by sight. After an- choring the bronchosco]je with the fingers of the left hand, the riglit is used at the collar of the proximal end (not grasping the handle) to manipulate the tube, inward, outward, downward, upward or laterally, the tube being permitted to slide between the finger and thumb of the left hand, if withdrawal or deeper insertion is needed. At any time it 168 INTRODl^CTinx OF TltK BRONCHOSCOPE. is instantly fixed at the desired point ; for instance wiien a momentary view of a foreign body has been obtained, followed by disappearance due to respiratory movement, cough, a flood of secretions. It is very im- portant under such circumstances to keep the tube there until an- other view is obtained. The manipulation of the tube with the right hand is important. The handle of the bronchoscope is not grasped firmly in the clenched hand as one would hold a revolver (A, Fig. 13S). On the contrary it is held lightly, by the collar with the right thumb and index finger (B, Fig. 138) the other fingers either not being used at all or only to assist in rotating or balancing the instrument. The handle of the bronchoscope is needed only when it is desired to rotate the bron- choscope, and then it is used but slightly, being pushed around with the second and third fingers of the right hand while the thumb and index finger hold the collar. A B Fig. 138. — A, incorrect manner of holding bronchoscope. The grasp is too rigid and the position of the hand is awkward. B, correct manner, the collar being held lightly between the finger and tlie thumb. The thumb must not occlude the proximal tube mouth. Identification of the normal carina is easy when the orifices of both main bronchi are exposed. The difficulty which beginners have is due to the fact that the right bronchus is mori^hologically the continuation of the trachea whereas the left is, in many cases, for endoscopic pur- poses, a lateral branch. Hence, special care must be taken in searching for the carina to pass down the trachea with the lip of the bronchoscope toward the left (A. Fig. 139) and to make slight lateral pressure with the lip of the bronchoscope on the left tracheal wall, while the head of the patient is held slightly toward the right. This will result in exposing the left main bronchial orifice and between it and the right is the carina, which by this method should never be missed. If some detail is neg- lected and the left bronchial orifice is not in evidence, it is only neces- sary to withdraw the bronchoscope (not too far, lest it be brought al- INTKOnUCTlOX OF THE BRONCHOSCOPli. 169 together out of the trachea) and to start over again. Occasionally a diseased condition of the carina may cause difficulty in identification, as in ulceration, excessive deformity from the pressure of a mass of medias- tinal lymph nodes, etc. In such cases the identification of the bronchial orifices can be made by careful examination. Anomalies, such as the upper lobe bronchus being given off from the trachea, might cause con- fusion though in the only case of this anomaly seen by the author the mistake could scarcely have been made because the orifice was found only by effort. Kahler has observed diverticula of the trachea but these pouches ought not to lead to error in identification of the carina. Fig. 1.39. — Schema demonstrating the method of entering the desired bronchus with the slanted end bronchoscope. Recumbent patient. A, entering the left bronchus. B, the beak being reversed, the bronchoscope naturally linds its way into the right bronchus. The head of the patient is to the side opposite to that of the desired bronchus, and the axis of the trachea consequently is given a posi- tion at a more obtuse angle to that of the desired bronchus than is shown in this schema, which is intended to emphasize only the use of the slanted end. Entering the bronclioscof'e into the right and left main bronchi. If it is desired to enter the right bronchus, the patient's head is moved to the left and the bronchoscope is maintained in the same position as when started, namely, with the handle out horizontally to the right. If it is desired to enter the left bronchus, the patient's head is moved to the right and the handle of the bronchoscope is placed out horizontally to the left. The purpose of turning the handle in these directions is to bring the lip of the bronchoscope in proper position to facilitate the en- trance of the desired bronchus, as will be understood by referring to the schema, Fig. 13S). 170 INTRODUCTION OF THE BRONCHOSCOPE. Entering the bronchoscope into the middle lobe bronchus. For in- troduction, the head must be high above the table in order that the trachea shall be in line, as previously explained. \Mien, however, it is desired to enter an anterior branching bronchus, like the middle lobe bronchus, which is usually given off more or less toward the anterior part of the right stem bronchus, below the giving off of the upper lobe bronchus, it is necessarv to lower the head and to some extent the shoul- ders of the patient, as seen in the schema. Fig. 140. To accomplish this lowering, it is necessary to have the shoulders of the patient well out in- TT Fic;. 140. — Schema illustrating' tlie entering of tlie antc-rinrly lirancliing middle lobe bronchus. T, trachea. B, orifice of left main bronchus at bifurcation of trachea. The bronchoscope, S, is in the right main bronchus, pointing in the di- rection of the right inferior lobe bronchus, I. In order to cause the lip to enter the middle lolie bronchus, M, it is necessary to drop the head so that the bronchoscope in the trachea T T, will point properly to enable the lip of the tube mouth to enter the middle lobe bronchus, as it is seen to have done at ML. to the air toward the operator. The ridge of the patient's scapulae should be at the edge of the table. This will give the widest range of move- ment. In entering the middle lobe bronchus the slanted-end broncho- scope is much superior to any other shape as will be understood by look- ing at the schema, Fig. 141. The method of entering the bronchoscope into the I'urioiis branch bronchi is the same in [jrinciple as the entering of the middle lobe bron- chus. That is, the lip of the slanted-end bronchoscope is brought to the mouth of the branch bronchus by rotation of the bronchoscope until the IXTRODIXTION OF TIIK BRONCHOSCOPE. I'i'l handle corresponds to the general direction of the branch bronchus. Then the head and neck of the patient are swung to the opposite direction more or less strongly as needed. The bronchoscope, which has been kept a little above the orifice of the branch bronchus, is now pushed downward, the lip making slight pressure on the wall as it goes, so that when the mouth of the branch bronchus is reached, the lip will slip in. If tlie orifice cannot be thus found, the reverse method may be used. That is the bronchoscope is inserted down the stem bronchus past where the orifice must be. ( )n withdrawal the lip of the bronchoscope is pressed firmly against the lateral wall so that when the orifice is reached the lip will spring into the orifice, or, rather, the ridge corresponding to a carina will suddenly appear in the endoscopic image. This reverse method is especial!)- undesirable in foreign-body cases because the foreign body may be pushed farther into the branch bronchus. Biitcring the bronchoscope into the upper lobe bronchus is done by the method just described, the maneu\er being facilitated by moving the tube to the corner of the mouth opposite to the side of the desired bron- chus, and by displacing the head any iicnnission, from Bninings'excellent treatise. '•Die direckte Laryngoskopie, Bronchoskopie und Esophagoskopie," of which an excellent English translation, by ^Ir. Walter G. Howarlh, is published by Messrs. Bailliere, Tindall and Cox. The introduction of the Kahlcr bronchoscope is precisely the same as just described for the P>runings instrument. THK NOKM.VL BRONCHOSCOPIC IM.\GE. In the author's earlier ])ulilication (Bib. 209) were shown a number or normal and pathologic endosco])ic illustrations which show in such a satisfactory way the living appearances that no new colored illustrations are here added. The color of the mucosa as seen endoscopically varies with the degree of illumination. With a dull glowing filament the normal mucosa may seem dark red; with the bright, white light of a fully illuminated tung- sten filament the same mucosa will seem pinkish white ; while, with an over-illuminated filament, the mucosa may seem grayish white. The color of the normal mucosa also varies with the anesthetic. With chlor- oform the mucosa is paler than with ether, the difference being due not to local irritation, but to the engorgement of the vessels from the general stimulant effect of ether. Cocaine, by the ischemia it causes, if applied before the bronchoscope is deeply introduced causes the color of the mucosa to appear a paler pink, .\drenalin has an even more marked effect in whitening the endoscopic image. Neither of these act to the same extent if applied after the bronchoscopic examination has coiuinued for some time in the examined locality. The ridges between the orifices of branching bronchi are. under all ordinary conditions, nor mally of a glistening whitish color with only occasionally a slight tinge of pink. Their color often leads them to be mistaken by the beginner for a thread of mucus or a foreign body, such as a bright pin. It may be said, then, that the color of the mucosa as seen endoscop- ically, may, in health, vary from almost white, through yellowish pink, bluish ])ink, pale red to dark red. depending upon illumination and vas- cularity. The form of the endoscopic picture depends upon the angle at which the lumen is i)resented, this being in turn dependent upon, ( 1 ) the ])osi- tion of the tube, and, ( 2 ) the position of the parts examined. .\s both are constantly changing, the variety of forms in the eiuloscoiiic picture is almost cntUess. The respiratory, bechic, pulsatory, reflex and trans- mitted muscular movements and compressions so modify the normal image that nothing but study of the image, as seen in the living, will 176 INTRODUCTION OF THE BRONCHOSCOPE. educate the eye, as elsewhere meiilioned. When the axes of the bronchial and the bronchoscopic lumhia exactly correspond, the lumen of the bronchus seems to diminish more or less concentrically owing to per- spective, and the orifices of the branch bronchi with the white shining ridge between are seen beyond (Fig. 143). These views represent com- plete images which are momentarily obtained. Movements of the vari- ous kinds mentioned are constantly hiding the orifices and ridges that are a centimeter or more beyond the tube-mouth. These are accurately presented images. When the axis of the bronchoscope deviates from coincidence with the luminal axis, more or less of the wall toward which Fig. 143. — Normal endoscopic images. Semiscliematic. i. Left main bronchus. S, left upper lobe bronchus. I, left inferior lobe bronchus (or "stem" bronchus), showing dorsal and ventral branches. 2. Right main bronchus. SL, superior lobe bronchus. M, middle lobe. I, lower lobe bronchus showing orifices of dorsal and ventral branches. The main bronchus (right or left) below the upper lobe bronchus is usually referred to as "stem" bronchus because there is no true bifurca- tion, only a giving off of lesser branches from the stem. the tube-mouth de\iates, is seen. I'.y the form and position of the rings seen in perspective in the bronchial wall it is possible to estimate how far the luminal axis deviates from the bronchoscopic axis, and thus the direction of the particular branch bronchus may be estimated. By the same means the proper direction in which to move the tube to obtain a view directl)- into the long axis of the lumen is known. C)n the posterior tracheal wall, the "party wall.'' the signs of rings are absent. Else- where in the normal trachea the ring-like appearance is more or less marked by differences in color. The membranous inter-spaces are usual- ly of deeper color than the prominences corresponding to the cartilage. INTRODUCTION OF THE BRONCHOSCOPE. 177 If tlie tracheal mucosa is edematous, iuliltrated, or very much engorged, the rings may nut be visible. The ringed appearance of the wall dimin- ishes as we go downward untii it is not noticeable in the smallest bronchi, though it is not missed because the orifices make more or less of a ringed appearance in the endoscopic image. The posterior tracheal wall is ordinarily somewhat flattened and may even assume a convex form as it bulges forward into the trachea during cough, especially in children examined without, or with only slight, anes- thesia (Fig. 144). In addition to the posterior wall, there is a flattening often visible at the aortic crossing and also at the bifurcation, these being in some instances continuous with each other. A slight flattening in the /^N Fic. 144. — Endoscopic view showing forward bulging of the posterior mem- branous tracheo-esophageal wall during cough. Patient dorsally recumbent. Not patliological. Seen mostly in children, and accentuated w-hen the bronchoscopic tube mouth bears too much on the posterior tracheal wall. neck at the level of the thyroid gland cannot be called pathological. All of these flattenings are usually from before backward, though the longest diameter of the tracheal cross-section is seldom exactly in the lateral plane. The orifices of the dorsal and ventral branch bronchi are not opposite each other in the stem bronchus. The inferior lobe bronchi in some cases end in a sort of axis, where two or more branches are given off at nearly the same level, which is in contrast to the nionopodic branching higher up. CHAPTER X. t Introduction of the Esophagoscope. Indicailons and contraindicatiuns for esophagoscopy will be consid- ered under "Foreign Bodies" and under "Diseases." The remarks there made on contraindications, especially, should be read before attempt- ing the introduction of the esophagoscope. Anesthesia and position of the patient for esophagoscopy have al- ready been considered in a separate chapter. NORMAL NARROWINGS OF THE ESOPHAGUS. He who contemplates attempting esophagoscopy for the first time should fix in his mind certain general principles, anatomical and mechan- ical, that are known to experienced esophagoscopists, but which have never before been put in concrete form for the preliminary study of the beginner. These may be classed under two heads: 1. The normal narrowings of the esophageal lumen as seen endoscopically. 2. The nor- mal direction of the esophageal lumen, esophagoscopically considered. The esophagus is not a flaccid tube through which an endoscopic tube can be rudely pushed. Nor is it a straight tube. It deviates and has cer- tain narrowings, some of which are constant anatomic decreases of lumen. Others are due to pressure of surrounding structures that, viewed endo- scopically, give one the idea that the esophagus was put through first, and then all of the surrounding structures were tamped in around it like the stones and earth around a post in a post-hole. Other narrowings, and these are the most troublesome, are the spasmodic ones, due to the contraction of periesophageal musculatures. There are, also, spasmodic contractions, less powerful, of the circular muscular fibers of the esoph- ageal wall itself. Mehnert (Bib. 404), in a very elaborate paper on the anatomy of the esophagus, describes thirteen physiological constrictions in the esophagus. The esophagoscopist, however, will usually be able INTRODITTIOX Ol" TlIK KSOl'lI AGOSCOPE. JTO to demonstrate but five. 1. The cricophaiyngeal fold. 'L The crossing of the aorta. 3. The crossing of the left bronchus, i. The hiatus esophageus. r>. The upper thoracic aperture. Some esophagoscopists beHeve in a con- striction at the cardia itself. In the author's opinion there is certainly no spliincter at the cardia and he cannot but think that the constriction noted by some observers is due, in some instances, to the intra-abdonilnal pres- sure ; in others to mistaking for the cardia the compression produced by the narrowing of the hiatus esophageus through the action of the diaphrag- matic musculature. These narrownigs are largely due to static or contractive pressure of surrounding structures. The esophagus itself is so thin-walled a struc- ture that its narrowings, even under spasmodic contraction of its own musculature, are of less endoscopic importance than the peri-esophageal musculature, are of less endoscopic importance than the periesophageal structure. It is elsewhere stated that it is necessary to relax the eso- phageal musculature in order that trauma be not done during the extrac- tion of a very large and sharp foreign body. It is true that the con- tractions of the esophageal musculature are sufficient to permit of its laceration b\- the withdrawal of a foreign body when the musculature is spasmodically contracted, yet it is the surrounding musculature acting upon the surrounding hard and soft parts adjacent to the esoi)hagus that is in large part res])onsiblc for trauma in the willulrawal ul foreign bodies as well as fur the iliflicullies in the introduction of ihe esoph- agoscope. The cricopliaryih/cal cuiislriclio)!. In a previous chapter it was stated that a knowledge of endoscopic anatomy cannot be learned from books ; and to a certain extent it cannot be learned from the cadaver. No- where is this better exeni[)lilied tiian in the study of tile cricopharyn- geal constriction of the espohagus. In the cadaver this constriction is widely open ; and prior to the days of cso])hagoscopy it was supjiosed to be open in life. This has been called tiie "mouth'" of the esophagus: but, as by the ''mouth" of the esophagus esophagoscopists do not refer to the crescentic crevice. (Tig 1, I'late III) visible by direct or indirect laryngoscopy back of the arytenoid eminence and aryepiglottic folds, where these meet the postero-lateral pharyngeal wall, much confusion might result and the author ])roposes the term "cricopharyngeal con- striction." This crevice is the entrance to the hypopharynx which ends below (in the unanesthetized living subject) in a physiological narrow- ing, which, in life, looks as tliough it were being drawn togctiicr inter- mittently by a purse-string outsi, lOyrs. 6yrs. 3yrs. lyr. BIRTH Fig. 146. — The author's esophagoscopic chart arranged for convenient refer- ence in the sitting or laterally recumbent patient. INTRODUCTION OK THE ESOPII AGOSCOPE. 185 esophagus turns forward, which thrcction it maintains until it passes through the liiatus antl reaches the stomach. In ackhtion to the antero- posterior curvature of the esophagus just descrihed, there is a lateral deviation to the left in the thorax, which partly accounts for the esoph- agus passing back of the left bronchus. The other part is accounted for b\- the fact that the trachea deviates slightly toward the right in ap- proaching the bifurcation as though to get its a.xis more nearly in line with the right bronchus. The slight deviation of the esophagus to the left in the middle half of its thoracic portion is of less importance, endos- copicallv. than the very marked deviation of the lower esophagus to the left before and after passing through the hiatus. In considering the an- teroposterior and lateral deviations the endoscopist must fix in his mind that the esophagus enters the chest in a backward and downward direc- tion (anatomically) until below the level of the left bronchus, then it curves markedly forward and to the left. Mikulicz thought it necessary to put an angle of loO degrees in his esophagoscope to get forward through the hiatus. But with the patient in the ])Osition developed for the author by Dr. John W. Boyce, the patient's anatomy is so easily controlled that the straight and rigid esophagoscope can be inserted through the hiatus with the greatest ease, by careful attention to the de- tails hereinafter given of the author's "high-low" method of esoph- agoscopy. Specular csophagoscopy. As a rule, before introducing the esoph- agoscope for any purpose, the hypopharynx and cricopharyngeal con- striction should be inspected carefully with the speculum, Fig. 21. If this be not at hand, a fairly good inspection can be made with the laryngeal speculum. This is necessary for growths high up and for traumatism due to foreign bodies or to attempts at removal ; or the foreign body it- self may he located in this upper region. If so. it may be overridden by the esophagoscope, and it would be, in any event, much more easily re- moved through the esophageal speculum. Another very important point, especially in children, is that a retropharyngeal abscess may have bur- rowed down on the posterior wall until it has produced serious difficulty in swallowing ; and such a condition might easily be overlooked with the esoi)hagoscope, though plainly visible with the esophageal s])eculum, or with the direct laryngoscope. Of course dyspnea is much more apt to be a symptom, Init the author has seen one case which was totally free from dyspnea, the child being brought for dysphagia. Technic of s(en tube gas- troscope passed by sight. The hiatal constriction may assume the form of a slit or more commonly a rosette (Fig. 7, Plate III), and in its ro- sette form has often been mistaken by esophagoscopists for the cardia, leading to the erroneous idea of a sphincter at the cardia. If the ro- sette or slit cannot be promptly found, as may be the case in various de- grees of diffuse dilatation, the tube-mouth must be shifted farther to the left, and also anteriorly. I f the tube-mouth is centered over the hiatal constriction, moderately linn i)ressure continued for a short time will cause it to yield. Then the tube, maintaining its same direction will, 192 INTRODUCTION OF THE ESOPHAGOSCOPE. witlKHit further trouble, glide into and through the abdominal esophagus. The cardia will not be noticed as a constriction, but its appearance will be announced by the rolling in of reddish gastric, mucosal folds, Fig. 8, Plate III, and by a gush of fluid from the stomach. The normal esophagoscopic image. The form of the endoscopic image has already been described, as seen at the various stages of esoph- agoscopy. The color, as in all the mucosae, is subject to wide individ- ual variations within the limits of health, though not, perhaps, quite so wide as is seen in the phar\nx. The color, of course, varies in shade Fig. 151. — Esophagoscopy by the author's "hii;h-lii\v" nu-thod. Stage 4. Pass- ing the hiatus. The patient's vertex is about 5 cm. below tlie top of the table. with the intensity of the illumination, being dark criinson or brown un- der feeble light, nearly white under the intense light of an over-illumi- nated electric lamp. L'nder ordinary conditions with proper illumina- tion it may be described as pink varying from yellowish to bluish pink. As the author has pointed out, a good idea of average color may be had from inspection of the inside of the particular individual's cheek under the same illumination. The esophageal mucosa glistens with surface moisture. The folds are soft and velvety, rendering infiltrations quickly noticeable. The cricoid cartilage usually shows whitish through the mu- cosa. As soon as the eye becomes educated to the normal appearance iNTKonrcTioN (II" Till-: i:sopiiagoscope. 193 abnormalities of form and color are instantly noted. The gastric mu- cosa is pink if no food is present, but it is a darker pink than that of the esophagus. When food is in the stomach the color is crimson. These colors refer to distally illuminated images. With proximal illumination the color is said to be dark \ioIet. probably because of the distance from the source of light. Difficulties of esof'luigoscof'y. Those who follow carefully the meth- ods herein suggested should be able to esophagoscope an average patient under general anesthesia. For the first trial of esophagoscopy without anesthesia the patient should be a slender adult, with long lean neck and lew upper teeth. The author urges every endoscopist to avail himself of the first esophageal case of this type, to try esophagosco[)y without anesthesia. Soon be will find it needless to use either general or local Fig. i-,2. — Srliematic illustration of the aiithor'.s "high-low" method of esoph- agoscopy, fourth stage. Passing the hiatus. Tlie head is dropped from tlie po- sition of tlie I St and 2nd stages, CL, to the position T, and at the same time the head and and shonklcrs are moved to the right (without rotation) wliich gives the necessary direction for passing the hiatus. ane.ilbesia for esophagoscoiJN , and be will have many occasions to be glad that he has ac(|uired the knack. Cases of esophageal malignancy quite often present the desired qualities mentioned, and many of them come for diagnosis in no c(jndition to stand an anesthetic. The greatest difficulty arises from the faulty direction of the tube. It requires a gen- eral sense of direction and a mental picture of the direction of the esojjb- agus within the body ti> get ibe lube started right and to find the lumen of the pyriform sinus ami of the eso])bagus until the operator bas had sufficient experience to know the landmarks and tlie diflerent appear- ance of the folds of niuciisa as be proceeds. In order tn bring these 194 INTRODUCTION OF THE ESOPHAGOSCOPE. into view it is necessary to remove the secretion. In the author's esoph- agoscope this is taken away with the aspirator without interruption, though occasionally a swab may be useful in addition. Stagnant semi- solid food in stenotic cases is best removed by the "sponge pumping" pro- cess as described for bronchoscopy. Another great difficulty arises from the spasmodic contractions of the esophageal musculature and especially of the inferior constrictor near the cricoid level, in fact, the greatest difficulty in esophagoscopy is right at this point. This and the hiatal spasm are to be overcome by patient waiting with gentle pressure on a correctly directed tube centered over the closed lumen. Forcible misdi- rected pressure may perforate. The beginner will often find that the esophagoscope seems to be rigidly fixed so that it cannot be either in- troduced or withdrawn readily. Usually this comes from contact with the upper teeth of the patient and is overcome sometimes by a little wider opening of the jaws, and sometimes by easing up on the bite block, but most often by correcting the position of the patient's head. If the be- ginner cannot start the tube into the right pyriform sinus, in an adult, it is a good plan to insert an adult direct larj-ngoscope, and after expos- ing the arytenoid eminences to view to insert the child size (7 mm.) esophagoscope into the pyriform sinus by sight. This is one of the best ways to learn esophagoscopy. The side-slide oval laryngoscope is the best for this purpose, leaving the slide ofi" and keeping the speculum to the right (recumbent patient) side of the tongue so that the tongue will not crowd into the side opening. It is very rarely necessary to remove an esophagoscope once it is inserted. The author has been much surprised to learn how often some esophagoscopists remove and reinsert the esoph- agoscope at a seance. Once in. it should stay until the esophagoscopy is finished. If an anesthetic is used, it may be necessary to remove the esophagoscope for respiratory arrest, unless insufflation anesthesia is used. Without anesthesia no accident can occur in careful hands. Oc- casionally it is necessarv' to remove the esophagoscope to exchange it for a very small one that will go through a small stricture to get a foreign body that has lodged between two strictures. Occasionally, especially in stenotic conditions of the esophagus a large quantity of fluid will well up into the tube and it will be thought that the light has gone out because there are a number of centimeters' depth of opaque fluid over the light. As soon as this is aspirated through the drainage canal the Hglit will be found burning as brightly as ever. If in doubt as to whether this is the case the light carrier may be withdrawn, but under no circumstances except vital dangers to the patient should the esophagoscope be with- drawn until the examination is complete. As the author uses only two sizes of the esophagoscopic tubes, one for adults and one for children. IXTKODUCTION OF TIIIC ESOPll AGOSCOPE. 195 there is no need of starting with the wrong size. Serious difficulties may arise from insutticient instrumental e(|uipment, and unlike other depart- ments of surgery makeshifts are usually impossible and may be dangerous. Xo peroral endoscojiic attempt should be made without proper sized tubes for the particular case, i)roper forceps, sponges, batteries, etc. The operator does his patient and himself an injustice to attemiil endoscopy without a complete set as to sizes of whatever form of tubes he desires to use. In his earlier writings the author stated that "If rigid economy must he ])racticed, much good work can be done with a 7 mm.x4."j cm. esophagoscope, a ■'> mm.x30 cm. bronchoscope and a 12 mm.xlT cm. laryngeal speculum." Bninings has very justly criticized this statement as "likely to beguile the surgeon" into being content with a couple of tubes selected at random ; and he further states, "An insufficient equip- ment is often worse than none at all.'' In all of which the author fully concurs. Moser has advocated the ballooning of the esophagus by the soft- rubber hand-ball of an atomizer, the air being prevented from escaping by the insertion of the window-plug (Fig. 20). In conclusion it may be said that with the exception of inadequate ecjuipment all of the difficulties of the introduction of the esophagoscope are overcome, as with any other (nirely manual procedure, bv practice. Complications following csophagoscopx for foreign bodies will be considerefl in a later chapter. The simple passage of an esophagoscope, if skillfully done, is rarely, if e\er, followed by any complications. Slight stiffness of the neck, an ) from hooking of the tube-mouth over the arytenoid eminence may simulate recurrent paralysis. It is usually due to traumatic arthritis or myositis. Posticus paralysis may occur from recurrent or vagal pressure by a misdirected esophagoscope. Both fixation and paralysis usually recover, but occa- sionally persist. Perforation of the esophageal wall and false passage has already been alluded to. In some instances fatal septic mediastinitis i^ Fig. 153. — Injuru's truin iorciijle unskilled attempts at usuijhagoscupy. A. Fixed right arytenoid injured by the mouth of the esophagoscope. View through direct laryngoscope. Recovery followed. B. Opening of false passage just above the mouth of the esophagus at the site where diverticula occur. Fatal. C. Extrav- asated blood under the mucosal epithelium simulating a varicosity or angioma. Caused by undue pressure of the tube mouth. Probably not serious but indicative of a dangerous amount of force. D. Exudate covering long, gouged area resulting from unskillful esopha.goscopy. Profound shock. Death from sloiigliing sopha- gitis. (Sketched by the author from cases seen in consultation.) has occurred. In some cases which have come to the author's knowledge, ])erforation of the pleura has occurred. In all such instances, the au- thor would advise immediate opening and drainage of the pleura. Pletiral shock is already ]:)resent. usually pneumothorax also. All such cases de- velop a initrid discharge, having the odor of fecal matter, with profound sepsis, irritability and high fever unless drained promptly. In case of septic mediastinitis, the general surgeon should be consulted, though un- fortunately most cases are hopeless. A frequent accident with the beginner is the gouging of a bit of mucosa from the posterior hypopharyngeal wall. This comes from one or more of three errors: (1) Faulty position of patient, (2) faulty di- rection of the tube, and (3) undue haste to advance the tube instead of waiting for the stihsidence of cricopharyngeal spasm. Patients with ad- INTRODTTIION Ol- i' 1 1 1: ICSOIMI Ai'DSCOPK. 197 vaiiced organic disease such as hard arteries, cirrhosis of the Hver, ad- vanced tuberculosis, uncompensated heart lesions, etc., may have se- vere complications precipitated by esophagoscopy. A child's esophago- scope ( 7 mm. ) skillfully passed with high head will involve the least risk in such cases. J'lic tcclniic of introduciiui the Kahler csophagoscopc is precisely the same as that of the Hriinings esophagoscope. Introduction of the Brnnings esophagoscope. Britnings describes two methods of introduction, one with a mandrin and one without, the former the easier, the latter the preferable way, Briinings advises ocidar introduction when mandrin introduction involves special dangers or fails to accomplish the object for which the esophagoscopy is done. He believes that ocular introduction, therefore, is indicated in the ma- jority of cases. Itninings ])refers the sitting position of the patient, though he also uses the laterally recumbent position with knees flexed. In either position the patient's head is held by an assistant. Occasionally he uses the dorsally recumbent position, but he regards this as more difficult, and in children he states that "Lying on the back must in any case be avoided." He states that a general anesthetic is always neces- sary in children and that they must be raised up for the introduction of the tube after they are anesthetized. In adults thorough local anes- thetization with cocaine is used. The ISrunings tubes should be warmed and greased with licjuid petrolatum and the mirror shoidd be warmed to prevent fogging from condensation. In introduction of the esophago- scope with the mandrin, the hand lamp. Fig. 2. is detached ; the funnel- shajied [jroximal end of the tube is held between the thumb and linger of the right hand like a ])en. The silk wo\en mandrin projecting be- yond the distal end of the tube is ])assed down along the posterior pharyngeal wall into the esophagus. If the mandrin deviates into either pyriform sinus, Briinings directs the patient to swallow to centralize the tube again. When the reflex contractions at the esophageal mouth stop the advance of the mandrin and instrument, no violence is to be used. Instead, an in-and-out ])rol>ing niovenient of the tube is used and llie patient is commanded to continue regular breatiiing. and to swallow. If introduction fail, it is necessary to wait with the tube and mandrin in position until the spasm relaxes. This is known by the sensation of an easy advancing of the tube to slight pressure, and by the fact that the "spatula tube" of the inslnmient almost (lisai)i)ears in the moiuh. Then the [jatient bends the head farther backward and the itroximal portion of the tube is moved around to one corner of the patient's mouth, the head being slightly turned to the o])posite side. If a gap between teetli is available the tube is moved into the gap. Then the mandrin is re- 198 INTRODUCTION OF THE ESOPHAGOSCOPE. moved, the hand lamp attached and the inner tube inserted. If the latter has been in place with the mandrin inside of it, it is now pushed down- ward. In most instances, however, foreign bodies and disease high up are dealt with through the spatula tube alone, without using an inner tube. In introduction by sight in the sitting patient the procedure is as described for direct laryngoscopy up to the point of exposing the larynx, the hand lamp being fitted with the tube spatula as shown in Fig. 2. This will reach to the level of the tracheal bifurcation. If it is desired to explore further, the inner tube ( Fig. 4 ) of appropriate size and length according to the patient is inserted. After exposing the larynx, the spatular end of the tube spatula, or outer tube, is inserted in the median line and the larynx is drawn forward as the spatular end is slid down behind the larynx into the hypopharynx. Here the advance is usually opposed by spasm, bringing the posterior lip of the esophageal mouth forward and presenting an "unconquerable barrier" to further advance. While waiting for the spasm to subside the position of the patient and of the instrument are inspected to see that they are correct, with relaxed muscles, without rigid bending of the head ; and the patient is told to keep on breathing quietly and regularly. Swallowing, if the patient can accomplish it. helps materially. Rotating movements of the tube are helpful in finding the lumen. Once past the constriction at the mouth of the esophagus the tube passes without further difficulty, the head being managed as before. When the full length of the spatular tube, or outer tube, has been inserted, which will bring the distal end to about the level of the tracheal bifurcation, the inner extension tube is inserted if it is desired to explore further. In the left laterally recumbent patient the manipulations are the same as in the sitting patient, because with the operator standing facing the patient, and bending the operator's head down to the right, the operator maintains the same relative position to the patient's anatomy as in the sitting position of the patient. In the dorsal position of the patient which Briinings does not advise, the oper- ator holds the instnmient with the right hand as in Fig. 142. For fur- ther details of Briinings' methods the reader is referred to Briinings' in- teresting and instructive book (Bib. 62) or to the excellent translation thereof by Mr. Walter G. Howarth (Bib. 208). CHAPTER XI. Acquiring Skill. The purpose of this book is to tell how to do peroral endoscopy. But with all purely manual things a knowledge how to do them is mere- ly a start. It requires prolonged practice to be able to do them well. An orchestra leader knows how the instruments should be played, yet is. unable to play upon any except the one on which he has spent a lifetime of practice. Were it not for the evidence of the performance of others, a beginner's first instrumental musical attempt would lead him to think impossible many of the manual things that later are as easy to him as walking. Other and new difficulties will arise and will be overcome ; there will always be difficulties worthy of continual practice in order to acquire the utmost tactile and co-ordinate dexterity. So it is with peroral endoscopy. Herbert Tilley (Bib. 545) very aptly states that, "While it would be idle affectation to suggest that neither skill nor practice is ne- cessary for the intelligent use of the bronchoscope, yet it is very true that a little practice combined with patience and gentleness should ren- der any surgeon comiictent to use the bronchoscope with reasonable as- surance." W hile the author believes that more than a little practice is desirable, he heartily concurs in the foregoing statement because of the qualifying clause "'combined with patience and gentleness." These are the great safeguards of endoscopy. As with instrumental music certain personal qualifications will en- able better endoscopic work and especially is this true in diflicult foreign- body cases. Good eyesight without excessive refractive errors comes first in imjiortance. Endless patience is an essential. A good faculty of orientation will stand the endoscopist in good stead. Mechanical in- genuity is necessary. The greatest percentage of successes will accrue to him who is so constituted as to work calmly and deliberately, yet quickly and accurately, under severe stress of ])rolonged work with one eye, subject to great anxieties and where a mistake or lack of prompt- ness and accuracy may mean the flcath of the ])aticnt either immediately or by default ultimately. There is absolutely nothing like it in the whole realm of surgery. The operator's ordeal is well described by Ingals as 200 ACgilRING SKILL. folluws: "'riie heart-breaking delays, the extreme anxiety for the pa- tient and the knowledge that jjrolonged operations of this kind are dan- gerons, while failure may spell death for the patient, place the operator under such circumstances under an indescribable stress.'' The greatest difficulty will be encountered by the surgeon who has been accustomed always to work with both hands and both eyes in an open wound. Such a one will tind difficulties in working with the mirror in ordinary indirect rhino-laryngologic work, and endoscopy will ])re- sent to him difficulties infinitely greater. Far be it from the author to deter any one from taking up bronchoscopy and esophagoscopy. On the contrary, it has been the author's endeavor for years to popularize these procedures with the jirofession and to induce every one who is willing to devote to it the necessary amount of practice, to take it up. In fact it is because the author once said that bronchoscopy and esophagoscopy were easy, that he deems it at this late day necessary to issue a word of caution against taking up the work, especially in foreign body cases, without due appreciation of the difficulties to be met and overcome only by continual practice. The foregoing, however, applies only to foreign body work, direct lan'ngeal operating, and a few other procedures like the dilatation of bronchial and esophageal strictures, exploration of the subdiverticular esophagus, and the like. It does not apply to the exposure of the larynx for diagnosis or for the introduction of intratracheal insufflation tubes, which procedures anyone can easily learn without special forehead mir- ror experience or special qualifications. The author believes that every laryngologist of the future will be considered incompetent if he cannot examine the larynx of any child by direct laryngoscopy, and that the rhino-laryiigologist (who of necessity is trained by years of work with one eye through narrow o])enings ) is, logically, the best man fitted for bronchoscopy and esophagoscopy, and he should be a bronchoscopist and an esophagoscopist. If, however, the laryngologist prefers not to de- vote the time and attention needed to do them well, he may refer cases requiring bronchoscopy and esophagoscopy to some near neighbor who is equipped: but escape direct laryngoscopy he cannot, if he desires to be called a laryngologist.* It is the author's hope and belief that per- fection in direct laryngoscopy will lead every rhino-larjngologist pos- sessed of good eyesight to be also a broncho-esophagoscopist. For foreign-bodv work a large instrumental outfit is necessary, but no arma- mentarium, however complete, will lessen the need for prolonged co- ordinate education of the eye and the fingers. To some extent, this might be said of surgeiy in general ; but with endoscopy it will be very different if none of the ])revious training of the surgeon has been in the •Extracted frum the -Vuthor'.s "l!a|)i)ui t" at tlu- International Medical C'on- eress, London. 1913. AforiKINC. SKIM.. 201 line of working with one eye while ij,nioriny the image of the other, nor in the jiracticc of depth jierception with one eye only. Estimation of distances is under all circumstances largely a matter of personal e(|ua- tion, some persons being remarkably adept naturally, wdiile others find it exceedingly difficult to make even an approximate estimate of so ap- parent a distance as the width of a street. Such difficulties in making estimates are, of course, enormously increased when they are to be made with one eye only and looking through a tube. Much practice, howe\er, will enable anyone to estimate with sutTicient accuracy the va- rious depths of the tissues seen in the endoscopic image; and those with natural aptitude can develop this depth perception to an extent that seems incredible. -Much as it may hurt the self-esteem of the surgeon, after his years of exjjerience in surgery, if he wishes to do bronchoscopy for foreign bodies, he must begin at the beginning and take endless hours of practice on the dog, unless he be so heartless as to do his first tube work on human beings. Practice on human beings in the general field of surgery is very different, because the careful man, working in an ojien wound with both eyes and both hands, and with an experienced surgeon assisting, will do no harm. The very worst that may follow is siinply a prolongation of the operation. In endoscopy, prolongation is often a very serious matter ; and the errors of omission and those of commission may be fatal both by default in not removing the foreign body ; in mak- ing it im])ossible for anybody else to remove it ; or in producing fatal trauma or respiratory arrest. Master and pupil cannot see at the same time in endoscopy. Fur the acquirement of skill five modes of education of the eye and fingers are available. 1. I'reliminary practice with bronchoscope and forceps. 2. I'ractice upon the cadaver. '.]. I'ractice upon the dog. •1, .Sketching the endoscopic image. 5. I'ractice upon human beings. Prcliininary practice. The first step for the beginner in endoscopy should be the mastery of the mechanical details of tubes and their illumi- nation. He should learn just the degree of illumination the lamps will stand without burning them out or shortening their "life." Carbon fila- ment lanijis will stand only an am])erage that is indicated by the filament hct/iiiiiiiK/ to turn white. Tungsten filament lamps illuminate with a less amperage, but the rheostat may be run up until the filament gets (|uite white. Tf after an hour's use the glass of the lamp shows black it in- dicates that the lamp has been overilluminated. Some instruction by an electrician is valuable. These .suggestions apply to all forms of instru- ments. With the I'.ninings and Kahler instruments the adjustment of 202 ACQUIRING SKILL. illumination, centering of the light, etc., should always be done as a pre- liminary ; not while the tube is in the patient. With the author's instru- ments if it is desired to inspect the lamp while the endoscopic tube is in the patient, the light carrier may be withdrawn and the lamp replaced or adjusted. With any form of instrument it is a mistake to turn on more current with the tube in the patient every time the field seems in- sufficiently illuminated. The loss of light may be due to soiling or mois- ture condensation on the mirror of handlamps or headlamps, to secretion in the tubes, etc. With the Briinings instrument the manipulation of the reflector should be practiced so that the light may be cjuickly centered. This is accomplished by adjusting the mirror so that the crossing point of the filaments in the image projected onto any vertical plane is seen to be exactly concentric with the center of the tube through which the observer is looking. The swinging aside of the mirror carrier should be practiced because this must be promptly done in anticipation of the pa- tient's every cough to prevent soiling of the mirror. Practice in the left-handed insertion of the inner tube, and in looking through the mir- ror slot is essential to good work. All of the instrumental manipulations above referred to can be as well learned on inanimate objects an on a patient. The Kirstein headlamp as used by Killian, and the Claar headlight as used by Guisez re(|uire focusing and adjustment to insure parallelism between the visual and illuminant axes, which will not be difficult for the laryngologist. who, of course, is accustomed to work with head mirrors and headlights. The Kirstein and Claar headlights may, indeed, be used with great advantage in nasal and indirect laryngeal work. The next step is preliminary practice with bronchoscope and forceps in picking up threads from a table. The small bronchoscope (.J mm.) should be used and the forceps should never be closed except under guidance of the eye at the proximal tube-mouth. First, short bits of black threads on a white cloth should be used : then white threads on a white cloth, finally black threads on a black cloth. Incidentally it may be mentioned that this thread practice is an excellent method of testing the different form of instruments and illumination in order to select the kind best suited to the operator's personal ecjualion. Comparisons should be with tubes of equal diameters. The conscientious beginner will engage in preliminary practice un- til all of the manipulations are automatic. Practice on the cadaz'er is very useful for the study of tlie local anatomy because there are no reflexes or secretions to hinder. Anyone can fumble around until he succeeds in exposing the cadaveric larynx and introducing the bronchoscope or esophagoscope ; but this is not the best method of study. The influence of position should be carefully noted by lowering the head to the Rose position. Then the direct laryngo- ACQUIRING SKILL. 203 scope should be introduced and the fully extended head gradually raised until the vertex is higher than the table. The laryngeal exposure ob- tained will give the key to the proper position for peroral endoscopy. Then the bronchoscopic and esophagoscopic anatomy should be studied. Particular attention should be given to appreciation of distances especial- ly those from the glottis to the bifurcation ; from the bifurcation to the upper lobe bronchi on the right and the left sides respectively ; and from the right upper-lobe bronchus to the middle-lobe bronchus. The angle of branching of the larger bronchi is also important, though these angles are apt to be distorted in the cadaver. The beginner in endoscopy should make himself familiar with all parts of the tracheo-bronchial tree so that he knows instinctively how to reach any desired location. All of these things can be learned quicker and better on the cadaver than on the living and they cannot be learned at all from books. Practice upon the dog. The next step in the endoscopist's training should be the education of the eye to the prompt comprehension of the endoscopic pictures by practice upon the dog. This will be of little use so far as the exposure of the larynx and the introduction of the broncho- scope and esophagoscope in the human being are concerned, because the dog does not jM-esent the difficulties arising in the human being from the right-angled pharyngeal turn of the air and food passages. Never- thelesS; practice on the dog is of the utmost importance in training the eye and the fingers. The mentality of vision must be educated not only to comjjrehend the endoscopic image but it must comprehend the ever chang- ing image jiromptly. The histologist must educate his eye to extreme niceties of morphologic distinctions, but he has no end of time in which to study each field. The endoscopist in making observations in the air and food passages must observe not only form but color; and most ditti- cult of all. his object is never still a moment, never twice in precisely the same position. It takes much practice to be sure when the forceps are at the proper depth to grasp the foreign body or particular piece of tissue. Dog work is better than cadaver work for practice in this direction, because the colors, and especially the constant respiratory, ])ulsatory, bechic, and, in case of the esophagus, peristaltic and antiperistaltic movements present actual working conditions. Xo one should think of attempting for the first time to remove a foreign body from a human being until he has at least H>0 times removed a foreign body from a dog. If the operator has jjul little endoscopic work to do, he should practice between times on the dog in order to maintain skill. In foreign body practice on the dog, it is well to remember that this animal is peculiarly well able to rid him- self of foreign bodies. He can get open safety-pins and sometimes even fish-hooks out of his bronchi. .Manv letters of chagrin have come to the 204 ACQUIRING SKILL. author relating inability to find foreign bodies introduced a day or two before. If for any experimental purpose it is desired to have a foreign body remain in the canine lower air passages, it is necessary to devise a very secure anchorage. A small dog is preferable. Large dogs require longer instruments than human beings. Scopolomine 0.00065 gm. with morphine 0.0324 gm. hypodermatically is a convenient anesthetic for a small dog. It should be given an hour in advance and repeated, if neces- sary. Sketching the endoscopic image. One of the best ways to educate the eye to grasp (juickly the fleeting panoramic endoscopic views is to practice sketching. However crude, artistically, the effort may be, the practice of quickly observing form and color of the visible field will be of inestimable value. Practice catching the darks first and jot them down with pencil in previously scribed circles. After the habit of quick- ly noting the darks is formed, the noting of the lights as to their form is easily ac(|uired. for m a measure, the lights take care of themseKes because they are necessarily blocked out by the darks. The noting of the color comes next. The color of the darks is unimportant for train- ing of the eye. though, of course, very necessary for accurate illustra- tion. For the recognition of disease it is necessarv to observe the color of the well-illuminated parts — the lights. If the sketching method of educating the eye as here outlined is practiced, it is remarkable how the eye will acquire the habit of quickly recording successive pictures of form and color. .\s the field of view is small the form and position of the darks and the color of the lights are taken in over different parts of tiie whole field simultaneously. If desired, pencil and sketch cards with scribed circles can be sterilized in alcohol for use on the instrument table, but it is scarcely justifiable to keep a patient endoscoped either with or without an anesthetic. Moreover, it is quite unnecessary, because, if the essential amount of endoscopic practice on the dog is done, the sketch- ing can be there practiced until not only will the education of the eye be perfected, but the mental habit of recording impressions will be ac- quired, so that a series of a half dozen or more pictures can be sketched from memory immediately after the endoscopy is finished. Unless one has had much previous training in water or oil colors, wax crayon pen- cils are best, as thev do not require a fixative like pastels, though their tints are not quite so accurate or so easily blended or overworked. Faber makes (iO dift'erent tints under the name of "Castex Polychrome" pencils. Numbers 31, 34, 30, 'M . in and -"i".; will probably be found most useful. P.lending can be done with a clean, pointed pencil-eraser. So far, no ]ihotographic method of recording endoscopic views of the air and food passages has yielded very satisfactory results, not only because of the feebleness and reddish tint of the return ravs, but mainlv l)ecause of the ACQUIRING SKlI.l,. 205 perpetual mo\cnieiU which prevents lengthy exposure. L'ntil some diffi- cult problems are overcome, jjencil, crayon and brush are the only means of recording a])pearances. Practice upon hujiian bciHi/s. It is stated above that dog and cada- ver i)ractice do not help greath- in overcoming the difficulties of introduc- tion. Dog and cadaver practice do help to some extent, because the education of the eye promptly to appreciate the endoscopic image is fundamental : but the knack of displacement for laryngeal exposure and of passing the cricopharyngeus, esophagoscopically. are yet to be learned and for these purposes only the human being will serve. L'ntil human direct laryngoscopy is learned no attempt should be made to do bron- choscopy or esophagoscopy. Respirator}' arrest during the progress of esophagoscopy, or after the withdrawal of the bronchoscope in bronchos- copy, demands that for the safetv of the patient the operator shall be able promptly to expose the laryn.x and insert the bronchoscope for oxygen insufflation. The familiarity with the location of the pyriform sinuses and laryngopharynx under direct view is (|uite essential to esoph- agoscopy. To anyone who is skillful at cx])osing the larynx, the intro- duction of the bronchoscope is easy, and no one should attemj)! bron- choscopy until he has acquired sufficient skill to expose the larynx in almost any patient in 15 seconds. Seldom should it require more than 8 seconds. One ought to be able to hold the laryn.x in view long enough for half a dozen men to take a look. Fortunately there is. in all out- jiatient clinics, a goodly percentage of cases that justify direct laryngos- copy. Any patient with laryngeal paralysis of undetermined etiology or any patient with infiltration of the arytenoid re.gion should be ex- amined for disease of the [larty wall, antcriorlw and also down in the hypopharvnx. Certain cases of laryngeal tuberculosis are benefited by the direct application of the galvano-cautcry. ( )ther material that can lie conscientiously used will readih- be fciiind, because direct laryngos- copy in any case not dyspneic. and done under aseptic precautions is harmless. Tracheotomized cases should be regularly and carcfullv tra- cheoscoped for exuberant granulations which may occlude the lube antl cause death. I'j-osions, necrosis of cartilage, edematous areas et cetera, due to ill-titting cannulae are remediable. .\ plan for cure of the stenosis can only in this way be formulated. Such cases should be examined from above and below. Having mastered hy]i()])haryngoscopic and direct laryngeal left-hand exiJosure in the human being, the student who has followed the course here laid out need have no hesitation whatever in attempting bronchoscopy or esophagoscopy in any case where these pro- cedures are not contraiiulicated. The tirst few esophagoscopies should be emaciatcfl adults with few teeth, and, if justifiable, should be general- Iv anesthetized. CHAPTER XII. Foreign Bodies in the Air and Food Passages. List of foreign bodies found in air and food passages. It seems to die author a sacrifice of space to list all of the foreign bodies so far found in these passages, since any substance not too large and not soluble may be encountered endoscopically : be that substance from the animal, vegetable or mineral kingdoms, or manufactured therefrom by man. Rather would it seem profitable to classify these substances by the me- chanical problems of their extraction and this will be done in future chapters. It may be well here to classify the sources of foreign bodies. The following classification of Voelcker, quoted by Sir St. Clair Thom- son, (Bib. 539) is comprehensive. 1. From the mouth — articles of food, bones of meat or fish, fruit stones, peas, beans, shells, seeds, ears of corn, grasses, pieces of wood or coal, coins, buttons, pencils, marbles, toys, broken ]Mpe-stems, pins, needles, nails, tooth-plates, leeches. 2. From the stomach — vomited food or blood, or the migration of lumbrici or threadworms. 3. From the lungs — hemoptysis, hydatids. 4. From the outside — as by penetration of a pin, dart, bullet, or drainage-tube from the neck. 5. From surgical measures — detached portions of instruments, sprays, brushes, cotton-wool, gauze, sponges, ;mlrum plugs, intubation tubes, broken-of¥ cannulae of tracheotomy tubes, amputated tonsils, ade- noids or other growths and hemorrhage. 6. Arising in situ — necrosed cartilage, ulcerating sloughs, mem- brane, effused blood. 7. Penetration from the neighborhood — ulceration or extension of malignant disease from the pleura, thyroid gland, or esophagus, or the penetration of a tuberculous gland from the mediastinum. To this list might be added the penetration of a foreign body from the esophagus into the trachea, of which the author has seen two in- FOREIGN BODIES IX AIR AND 1-OOD PASSAGES 207 Stances, and the penetration of a foreign body from the tracheo-bron- chial tree into the esophagus of which the author has seen one instance, that of a sharp fragment of bone the point of which was visible in the esophagus, but which was removed liy bronchoscopy from the left bron- chus. Prophylaxis. Many of the foreign-body accidents are entirely pre- ventable. If no one put into his mouth anything but food, foreign- body cases would be rare. In the author's collection only about three per cent are proper articles of food and these mostly insufiliciently mas- ticated or cooked. This does not include the foods removed from stric- tured esophagus. .\ much larger percentage are substances normally in food stuffs but not removed before eating, such as bones, shells, hulls and seeds. More care in the preparation of food and in the eating of fruits with large seeds is of first prophylactic importance. Care in the preparation of foods can easily prevent the accidental presence of pins. needles, bits of china and glass, enamelling and solder from utensil's and the like. Tradesmen, such as lathers, carpetmen and upholsterers who carry tacks and nails in their mouths could just as easily have learned in the beginning some less dangerous as w'ell as less filthy method, and apprentices should be so taught. Magazines with automatic feeding mechanisms could easily be devised that would also save time, wdiich latter feature is the only one that would appeal strongly to the employer. Chil- dren should he taught from infancy not to put anything inedible into their mouths. A large part of the infantile education as to the physical na- ture of the portable substances in reach comes from testing them in the mouth ; but this natural tendency can be combated as can also the in- fantile effort to assist dentition by biting on various substances. How- ever, if mothers and nurses make a special elTort it is remarkable how readilv most children even as early as the second year can be taught by reproof. Younger children must be watched. The frequency with which pins, buttons and safety-pins are removcil by endoscopists points to care- lessness in leaving these things within the liaby's reach. Teething rings and the toys of children should all be too large to get beyond the mouth into the air or food passages, and all toys should be regularly inspected for loose parts likely to become detached. Digital efforts at removal are frequently res])onsil)le for dislodging and forcing downward foreign bod- ies that could be readily removed from the ])harynx with forceps. The index finger curling forward hook-like in an efiort to remove an object from the laryngo-pharyn.x is very apt to force the object into the larynx. Parents, nurses, dentists and physicians should bear this in mind. Nurses and phvsicians understaufl fully about removing artificial dentures from the mouth preparatory to anesthesia ; but they are not so often alert to 208 FORKICN BODIES IN' AIR AND 1-OOD PASSAGKS. the same potential dangers in case of unconsciousness from alcoholic intoxication, delirium, syncope, shock, collapse and sleep, especially the dozing or nap of the daytime. Foreign bodies in the hysteric and the insane. We must always be on our guard against the cases which come in with the most positive as- surance by the patient that there is a foreign-body present. These cases are of two classes. Those who have had a foreign body which has passed on downward and left some traumatism, the sensations of which lead the patient to believe that the foreign body is still present, and the hysteric patient who believes she, or he has a foreign body. In regard to the hysteric class, it is a great mistake to do a bronchoscopy with the ho])e of cure by suggestion. Such "cures" are ephemeral. The foreign-body illusion will recur with more and more persistence and amplification the more often it is removed by suggestion. .\s is well known, two of the most prominent characteristics of hysteria are the hunger for sympathy and the desire to mystify and astonish the physician by unusual simula- tions of disease. The border lines between pure hysteria and the hys- teriform symptoms of paranoia on the one hand, and between the hys- teriform and the suicidal symptoms of paranoia on the other hand, are too abstruse for the author. These matters concern the psychiatrist. The question that must be determined by the endoscopist is wdiether or not to do an endoscopy and if so whether it shall be first a bronchoscopy or an esophagoscopy in case indirect mirror examination prove negati\e. In case of foreign body visible radiographically, or one that has pro- duced a visible lesion such as abscess, the (|uestion is ([uicklv decided. In all other cases there are four safe rules to follow : 1. Consider only objective symptoms. 2. Consider only testimony of persons other lh:in the patient as tc history. 3. In all cases of doubt make a thorough endoscopic search. 4. If endoscopy is negative do not worry about the patient's later assertion that she coughed up the foreign body that you failed to find. It is parallel with the hysteric crijjples that throw away their crutches after a faith cure. Remarkable cases of nuilti|)le foreign bodies in the stomach of the insane are not uncommon. A certain pro])ortion of these are almost certain to be metallic, or of lead, glass or porcelain and dense to the ray. Some such bodies may be removed wath the 10 mm. x ."i^ cm. esophago- gastrosco[)e. .\s a rule, however, the objects that appeal to the insane are of a kind that ajipears most appalling to them such as open pocket- knives, shar]) glass and the like. These are best remo\ ed by the abdom- inal surgeon by external operation. Should any object, of whatever kiiul. I-ORKIGX I'.OniKS IN AIR AND FOOD PASSAGES. 209 lodge in the esophagus, larynx or trachea, however, it should be removed endoscopically, and it should not he pushed down into the stomach as fatal trauma is \ery likely to result. In most instances it will he in the esophagus that the endoscopist will be required for foreign body work in the hysteric and the insane. The author has, however, had one case of \()luntary aspiration of a foreign liody into the bronchi, following a probablv accidental similar asiiiration. Fie. 154. Racliograi)h by IJr. Lewis G. Cole, sliouiiii; two Uicl, not so near the periphery as the previous tacks. The question then arose how could the patient get the tacks into the bronchi voluntarily, as it was clear that she was a hvsteric, if not demented. Dr. John \\". Bovce, in consultation Fig. 155. Tacks removed by bronchoscopy from posterior branch of right inferior lobe bronchus of a woman aged 41 years, referred by Dr. Lewis G. Cole. on this point, said that by throwing a number of tacks into the pharynx and taking a deep inspiration, she might get one or two down, but in so doing she would swallow many more than she could aspirate, so that, if not too late, a radiograph would show tacks in the alimentary canal in progress of passing through. An excellent radiograph by Dr. Cole showed four tacks in the abdomen (Fig. 1.57). The author removed the tacks (Fig. l.iS) from the bronchi in the French Hos]iital of New York City with the kind assistance of Drs. Robert C. Myles, J. H. Abraham, John McCoy, T. Taylor and Geo. \V. Bogart, the head being held in the Boyce position by Dr. D. T. Sable and the anesthetic ( chloroform) being skill- fully administered by Dr. T. Drysdale Buchanan. There was a most in- tense inflammation of all the bronchial mucosa and large quantities of pus were removed. The tack in a posterior branch of the right middle lobe bronchus was readily removed, requiring about two minutes, but the second tack in the posterior branch of the left inferior lobe bronchus was exceedingly difficult safely to remove. It was imbedded in bleeding FORKIGX BODII-.S IX AIR AND 1"()0I) I'ASS AGES. 211 granulation tissue, and the ])oint had perforated the opposite wall of the next larger branch. After fifteen minutes' work the author succeeded in disengaging the point and renKiving the tack. Two radiographs by Dr. Cole immediateU- after the bronchoscopy demonstrated tliat n(; tacks re- mained in the tliorax. Kemarks. The first two tacks had. no doulil, been accidentally as- pirated while ])Utting down oilcloth as stated by the ]iaticnt. The sym- FiG. 156. Radiograpli by Dr. L. G. Colo, ul tacks \ > iluntarily aspirated by tlic patient. pathy, the interest, the seiisational features of the case, and the anes- thetic evidently appealed to the neurotic temjK'rament of the patient, and developed the hysteria which later was most troublesomely manifest in ways unnecessary to enumerate. The case is unique in that it has never before been demonstrated that a patient could vohnUarily aspirate a foreign body info the bronchi, and it teaches a valuable lesson as to how to detect the occurrence by radiography of the abdomen in cases where an accident is denied. In all hysteric and insane patients a radio- 212 FORKIGN liOnTI'S IN AIR AND FOOD PASSAGES. graph slioiild be made alter removal of the foreign body as a matter of record. Procedure in a case of suspected foreign body. When a patient comes complaining of a foreign body in the air or food passages the (juestions that must he determined are : 1. Is there a foreign body present? Fig. 157. Kacliuyraiih li\ Dr. L. O. CwL, shuuiii.;; Uicks in tlie intestines in progress of passing through. Tacks were swallowed by the patient in attempt to aspirate them. 2. Where is it located ? 3. Is a peroral endoscopic i)rocedure indicated? 4. Are there any contraindications to endoscopy? o. Shall the first endoscopic procedure be laryngoscopic. broncho- scopic or csophagoscopic ? The questions listed above are so interlaced that they must be here considered more or less collectively to avoid reiietition ; but to determine l"OUi:ir..\ [;oDIi:S IN AIR A\D FOOD PASSAGKS. 313 these (juesiious (|uiekly and, so far as possible, accurately requires orderly investigative procedures as applied to the individual case. The various steps as pursued in the autlior's clinic arc detailed below, in the order given. ( )f course, if the foreign body is located in the earlier stcjis the investigation may terminate at any stage. 1. History. 2. Indirect examination of the larynx; then the naso-pharynx, then the tonsils or their neighborhood. 3. Radiography. 4. Physical examination locally in the neck and tli(jracically as well as generally by an internist. 5. Endoscop)'. History of the patient and deductions therefrom. Carefully taken histories are valuable statistically and for determining the question of the presence ami the localization of a foreign body. To be of value statistically it is necessary that a blank should be filled out in order that a record of certain details shall not be lacking in any of the histories. il Flc. 158. Tacks voluntarily aspirated. Removi.-il liy lironclmscoiiy ihroujili thf mouth. Covcrcil with dricil lilooil ;iik1 secretions. The aiUhor has used a blank of which l'"ig. \M is a reduced illuslratinn. Ahnost all cases come in with a history of having "swallowed" the for- eign body, and we must be on our guard not to accept this as meaning that the foreign body is probably in the esophagus. As many of the cases iuNoKc the (|uesti<)u of ;i foreign body not opaqtie to the ray, we must depend up(jn other things for localization. First in importance, is to lind out the sxniptoms at the time the foreign-body accident occurred, anil ])arlicidarl\ ;is to whether or not there was cough or ilyspnca at the time, followed with blood stained expectin-ation, because very often alter a short period, the tolerance of the air passages manifests itself in a total absence of symptoms. It is very rare. howe\er, that there is no cough- ing at the time the foreign body entered; so that a total absence of coughing, pro\ided some one is at hand whose observation is reliable, strongly negatives the possibility of the foreign body having eiUercloye_d Resulting instrumental lesion Post-operative pulmonary and esophageal condition Operation of particular interest Duration of convalescence Treatment Result obtained Autopsy Bibhography Surgeon-in-chief Anesthetist Msistants Fig. 159. History sheet for foreign body cases. After the foreign body has been removed, its location is entered on the top hne thus: "Case. Pin removed bronchoscopically from dorsal branch of right inferior lobe bronchus." FOREIGN BODIICS IN AIR AND FOOD PASSAGES. 815 server was not present. The period of quiescence during which there are no symptoms, may last from a few weeks to a few months before the symptoms of chronic inflammatory conditions and irritations become manifest. The reverse of this is not, however, so generally applicable; because after some preliminary irritation in the region of the larynx ex- citing cough, the patient may have swallowed the foreign body, and it may have lodged in the esophagus. Then again, there may be severe dys]jnea at the time either from the foreign body obstructing the larynx or from pressure on the esophagus below the cricoid where the party- wall is membranous. In one of the author's cases, a surgeon had done a tracheotomy for the removal of a foreign body supposed to be in the trachea because of great dyspnea. Xol finding the foreign body In the trachea, the surgeon asked the author to pass a bronchoscope. On bronchoscopy, through the mouth, the author found nothing in the trachea or bronchi. Ksophagosco[))-, however, enabled us to find and remove the foreign body (a coin above which meat and other food had become im- pacted) in the upper third of the esophagus. The tracheotomy was per- fectly justifiable and lifesaving because it was done for dyspnea, which was relieved completely ; but it points a valuable lesson in regard to the dyspnea produced by esophageally lodged foreign bodies. Intermittent dyspnea or intermittent cyanosis after a history of choking on a foreign body is practically diagnostic of a foreign body in the air passages. It is most apt to occur in flat foreign bodies, which allow free passage of air when their greatest ])l;ine corresponds to the long axis of the air passages, but which are inure or less obstructive when they turn side- wise. This may occur when the foreign body simply rotates in a semi- fixed position. When the foreign body is free to move and is being coughed up against the under surface of the glottis, there is, in some cases, a very decided sudden stoppage of the glottic space by the bulk oF the foreign body, probably plus more or less spasm which makes a very characteristic sound that can be heard some distance from the ])atienl. Tlie intiTinittint ilvspnea. in such a case, may occur not from a rocking val\e-like action, biU sini]ily the intermittent occlusion of tlie subglottic trachea. .\ remarkalile dilterence ijetween foreign bodies in the trachea and Ijronchi as com])ared witli a similar condition in the esophagus is that foreign bodies which are too small to cause dyspnea usually cause the patient no inconvenience. I'",ven cough may be practically absent, so that the i)atient is almost free from symptoms. In the esophagus, on the contrary, the ]>;ilient usually feels the foreign body every time he at- temijts to swallow, and there is usually a constant sensation of distress and annoyance. Foreign bodies wliich have entered the air passages usual- ly cause coughing and a sense of suli'ocation at the moment that the for- 216 FORKICN P.OniK? I\ AIR AND FOOD PASSAGICS. eign body enters the trachea : but thereafter, there is no sensation of sufifocation unless the foreign body is very large, and there is usually no other sensation. When an intruder enters the esophagus, on the other hand, there is usually a sensation of something lodged in the throat and the patient is impelled to make repeated swallowing efforts in the at- tempt to dislodge it. Food may be regurgitated for a time and then swallowing may seem normal, leading to the error of supposing the in- truder has gone down. This may be due to the relaxation of the spasm at first excited by the presence of the intruder, or it may be due to the foreign body having turned to a less obstructive position. Ingals re- ports a case in which small particles of corroded iron were coughed up from a nail which had been in the trachea for a number of years. \Miile such evidence is valuable when present it must not be taken negatively. As pointed out by Iglauer (Bib. "223), the mere size of a foreign body does not ])reclude its presence in the trachea. Determination of the position of an esophageallv lodged foreign body by the sensation of the patient is exceedingly misleading. The sensations that the patient feels may be those of the spasm excited in a relatively remote position in the esophagus, or the pains of other sensations may be reflected, but per- haps the most important factor is that the sensations of the esophagus are of a very ill-developed kind. Foreign bodies that ha\e lodged in the larynx usually cause hoarseness in a very short time, and the cough is apt to be of a croupy character. If. however, the foreign body is of such a nature as to prop the cords apart there may be complete aphonia, and this is almost diagnostic of a laryngeally lodged foreign body. Se- vere dyspnea also usually points to glottic or subglottic lodgment. For- eign bodies in the larynx are usually somewhat painful as compared to those that lodge in the tracliea and bronchi, which are painless. There is often a peculiar character to the cough when the foreign body pre- vents glottic closure by working between the cords. .\s is well known, the cords approximate and the cough comes with an exi)losive effort. This mechanism is interfered with by the proi)i)ing apart of the cords and hence the cough has rather the sound of an intubated patient, though only to a slight degree. In children there is the usual tracheal cough ow- ing to the collajjse of the tracheal walls during the expulsive eftorts. A very hoarse, croupy cry usually means reactionary inflammation, and to the trained ear there is a peculiar note produced in most cases by which Dr. Ellen J. Patterson and the author have been able to diagnosticate the presence of foreign bodies in a few instances. The note may be likened to a croupy or}' with a metallic hiss added, though this description is in- aderiuate to anyone who has not heard it. We do not know what pro- duces the alteration of the ordinary croupy sound, unless it is the rush of FORKIC.N r.onil'.S IN AIU AND FOOD I'ASSAGF.S. 317 air past the foreign IkxIv. In one such case, referred to us by Dr. C. C. Sandels, the sound amounted almost to a whistle, and was evidently due to the rush of air past tlic thin edge of the hollow brass cap at the "keeper-end" of a safety-pin. .\o radiograph had been taken and the diagnosis of foreign body in the larynx was made by us solely on the modification of the croupy cry. There was no history of foreign body and the family and their physician were astonished to see the pin. Every case with a foreign-body history should be followed up closely until the foreign body is located either in the body, in the stools, or un- til it is coughed up as the case may be. Under no circumstances should it be forgotten or ignored as harmless in the absence of symptoms. Indirect examination. When a patient comes in complaining of hav- ing swallowed a pin and states he or she can feel it "here," pointing to a location in the neck or chest, the patient should be placed at once in the recunibcni position and ;i mirror examination should be made in this irosition. The patieiil should, if possible, never be allowed to raise the head until after the mirror and Roentgen-ray examinations. W hen there is reason to suspect that a foreign body has entered the air passages, the patient shoidd be kept recumbent and, preferably, face downward. Un- der no circumstances should the patient be allowed to sit up or to lie on either side. The reason for these precautions is to prevent gravitation. If the patient is allowed to sit erect, the foreign body, especially if of small size, will fall down into the deepest possible bronchus. If tlie pa- tient is allowed to lie on the back, the foreign body will in\ade one of the posterior branches which are exceedingly diHicult to reach. The ob- jection to lying on the side is that this would fa\or the foreign body en- tering the u|)per lobe bronchus, and especially \\(ju1(1 this be the case if the foreign body should already be in one side and be dislodged and tak- en over into the other side, lender such circumstances, tlic U])[)cr lobe bronchus would be almost surely invaded if the patient w ere at the time lying uj)on ihc previously nnin\adcd side. It is prol)al>le that lying upon the face may cause the foreign body to enter the middle lobe bronchus, but in the two cases of foreign bodies in the middle lobe bronchus in the author's cx[)erience the extractions seemed easier than in cither cases in which the jiosterior branches of the inferior lobe bronchus had been in- vaded. I'urther evidence afforded by additional cases mav demonstrate that middle lube bronchus cases are not easier. In this e\ent ddrs.il n- cumbency would be better, but there can be no (|Ucstion that recumbency is advisable because of the well proven tendency of foreign bodies to work (low n\\;ird. I'.ecause of the briuiching angle of the middle lobe bronchi and of the inferior lobe bmnchi, respecli\ely, in relation to the long axis of the body, ventral recumbency does not make as steep a de- 218 FOREIGN BODIES IN AIK AND FOOD PASSAGES. clivity into the middle lobe bronchus and its branches as does dorsal re- cumbency into the dorsal branches of the inferior lobe bronchus. The fact of there being but one middle lobe bronchus also diminishes the chances of invasion even though right sided invasion is more frequent than left as will be referred to later. Next in importance is to quiet the fears of the patient, and above all not to urge the patient to cough in the vain hope of coughing the foreign body out. Not only are the chances of success small, but the chances of a sharp foreign body, such as a pin, burying its point are great. In the event of the point becoming buried, there is very apt to be a very ratchet-like action by which the pin is forced deeper and deeper, the point i)reventing upward movement. In case of foreign bodies more or less cubical or globular in shape there is risk that, in coughing, the foreign body may be jammed in the subglottic space and thus asphyxia be threatened. The rule in regard to keeping the patient recumbent does not apply to foreign bodies definitely located in the esophagus, because gravity plays little or no part in the downward mo\ement of anything in the esophagus under normal conditions. When an esophagoscope is introduced conditions are altered. Having e.xam- ined the larynx first, to make sure that there is no foreign body on the brink ready to fall into the air passages below should the patient gag, the tonsils and nasopharynx and neighboring regions should be carefully ex- amined. In all of this inspection preliminary to endoscopy, abrasions of possible foreign body origin should be looked for ; and the possibility of certain kinds of foreign bodies, as needles, headless pins and the like, having entered and disappeared into the tissues should be borne in mind. In such cases discovery of the wound of entrance is of the utmost im- ])ortance as facilitating remo\al liy pursuit or by enlargement of the wound, which are justifiable in these higher regions in certain cases as hereinafter explained. I.ocalhation of esophageallv lodged foreign bodies ik'ith the bougie. Nothing can be a more useless waste of time than the blind jiassage of a bougie in an esophageal case, whether disease or foreign bodv is sus- pected. It usually takes less time to pass an esophagoscope and remove the foreign body or a specimen of neoplasm, or to make an accurate diagnosis of disease than it does to pass the bougie ; after the passage of which one usually has accomplished nothing. The last defense of the blind bougie for diagnosis is based upon obsolete conditions. It is claimed that thus can be determined the length of esophagoscopic tube required. But there is no need of more than one tube for adults and one for children. It is also stated that high disease of the esophagus may be overridden or perforated by the mandrin of the esophagoscope unless the location is [ireviously determined by blind bouginage. But FOREIGN BODIES IX AIR AND FOOD PASSAGES. 219 there is no need of a mandrin in introducing the esophagoscope. The esophagoscope passed by sight is safer than the bougie. The latter is a rehc of pre-esophagoscopic days. RADIOGRAPHIC LOCALIZATION OF FOREIGN BODIES. The author is quite unfamihar with the technicalities of Roent- genology, and the suggestions herein given have been gleaned from ex- perience in a large number of cases of foreign bodies (as well as of dis- ease) the successful outcome of which has been due to marvelous work, radiographic and interpretative, of such eminent Roentgenologists as Cole, George C. Johnston. lioggs, Hickey, Grier, Foster, Gray, Bowen.. Lang, Menges, Leonard, Cassabian, Pfahler. Eynian, Pancoast, Holding and others. The suggestions here given are intended for surgeons who cainiot avail themselves of the work of radiographic experts. After hav- ing radiographically located a foreign body we must always remember the possibility of the foreign body having changed its position between the time the ray was taken and the bronchoscopy is done. The foreign body may have shifted to another bronchus, or it may be even in a bronchus of the opposite side. Excellent progress has been made in the radiographic localization of foreign bodies. This is especially true in regard to the technical im- provements which have rendered possible the practically instantaneous radiography, as it has cjuite recently been recognized (Tilley, Dundas Grant and others) that an instantaneous radiograph will often show for- eign bodies not visible with longer exposures. Moreover, there is less chance for voluntary and involuntary movements of the patient, which are transmitted to the foreign body, to blur the outline of the intruder. Esi)ecially is this the case with very young children who can- not be expected to hold their breath at command. Dr. George C. John- ston has a number of times gotten a plate with beautiful definition free from respiratory movement in an extremely dyspneic child with heaving chest by snapping a number of momentary exposures at the respiratory rest i)eriods after inspiration and before expiration. A deep inspiration held during the exposure creates an artificial emphysema which causes the foreign body to show, becai'se it lessens the density of the thorax : though it must be borne in mind that the more horizontal position of the ribs and the displacement of the viscera, including the foreign body must be allowed for in the localization. The steady progress made by the radiograi)iier in lateral radiography of the thorax has not only been of great aid in the general localization from bony and visceral landmarks, but also in conjunction with the caliper-guide suggested by Dr. Boyce and ijcrfected by the .-luthor. 220 FOREIGN BODIICS IX AIR AND FOOD PASSAGES. The author puqjosely omits a talnilar record of the foreign bodies that might be expected to show and those that ]irobal)l\- will not show. His reason for the omission are : 1. The casting of a radiographic shadow depends not alone upon the density of the foreign body but upon its thickness in the diameter parallel to the rays. .\n example of this is seen in Fig. 160 and 101. 2. A body of little densit}' or diameter may happen to be so lo- cated that Its shadow mav not lie overlaid bv normal shadows so that it Fig. i6o. Radiograph showing bone in the esophagus. Note the swelling at the esophageal walls and the clear outline of the air passages. (Author's case. See Fig. .y.l. Plate made by Dr. George C. Johnston.) may show. The author has seen a large number of examples of tin- kind which are not here reproduced because the shadows while plainly shown on the negatives lose too much in reproduction to show. 3. Lesions secondary to the foreign body may be revealed by the radiograph and thus enable localization as in the case cited under "Pul- KOKKICN BODIKS I \ AIR AM) 1"00» I'ASS AGKS. 231 moiiary Abscess," and under "I.ocalizalion Films." In another case of the aiulior a peanut kernel completely occluded the left upper lobe bron- chus producing a shadow over the entire left upper lobe, though, of course, the peanut itself did not show. The peanut kernel was bron- choscopically removed from just within the orifice of the upper lobe bronchus, liberating a large quantity of purulent secretion. 4. The foreign body may not be the same as that of which a his- tory is given. The most common example of this is the pin or other Fit;. 161, Railioiirapli of same patient. Tlic piece nf 1)(inc, tlnuisli present at the level of the dart, does not show, partly because it overlies the spine but mainly because in the lateral view the flat foreign body is seen on edge. An ex- ample of the misleadmg negative radiograph, and an indication for lateral as well 3S antcro-posterior radiography. dense object whicli has gotten into food and which, from the sensations and from its presence in sou|)s. etc.. tiie patient refers to as a "bone."' For the foregoing reasons the .luthor, e.xcept in cases of great ur- gency, has a radiograph taken of every case. L'nless the radiographic tube happens to be ])!accd exactly on a line that passes through the for- eign body and that is exactly vertical to tlie plate, there will be a mis- leading distortion as to the ])osition of the foreign body relatively to anatomic shadows : because the rays passing the foreign body at a cer- tain angle will continue to tra\el at that angle until they reach the plate. 222 FOREIGN BODIES I.V AIR AND FOOD PASSAGES. Therefore, the (hstortion will be in direct ratio to the distance of the foreign body from the plate, and also in direct ratio to the distance of the foreign body from any landmark, anatomic or artificial. While de- ceptive, if misunderstood, or if the position of the tube is unknown, this distortion has been turned to good account by enabling eminent Roent- genologists (Johnston, Cole, Boggs, Grier, Pfahler. Boetjer and others) to work out plans of localization by triangulation and otherwise, by means of which the precise depth from any surface landmark desired can be determined to a nicety. In one case, in which a foreign body was buried in the inflammatory new-tissue produced during a ten years' sojourn, the author's successful extraction of the foreign body was due to Dr. L. G. Cole's accurate localization. In a similar case Dr. Alenges en- abled the author to find a foreign body of seven years' sojourn. In quite a number of instances Drs. Johnston. Grier, Boggs and others have similarly rendered removals possible. The limitations of this method of localizations are reached when we encounter foreign substances not opaque to the ray. Borderline cases are those in which the body is not sufficiently dense to show in more than one position of the patient, as in a case of the author (reported on a future page) in which a glass collar button could be shown only in a quartering lateral exposure, between the heart and the spine. Fortunately, a very remarkable radiograph in this position by Dr. George C. Johnston not only revealed the collar button, but, by showing the trachea and bronchi, and still more wonderful the inflammatory new tissue which blocked the bronchus above, enabled the author endoscopically to cut away the intervening inflammatory obstruc- tion to gain access to and remove the foreign body. A radiograph, first in the anteroposterior plane and then in the lateral plane, has been very valuable in assisting in a localization of a foreign body with reference to a bronchoscope inserted to a certain definite location, which is fixed in the memory of the bronchoscopist so that he can find the same loca- tion at a subsequent bronchoscopy (Fig. ]li2). In doing this work, it is essential that no anesthetic ether be used, because of the inflammabil- ity of ether which might be ignited by a spark. If the foreign body is very dense to the ray the fluorescent screen may be used with results that are immediately available for work without withdrawal of the broncho- scope. Of course this method by either radiography or fluoroscopy is available only in case of foreign bodies dense to the ray. Manv foreign bodies that are sufficiently opacjue to show in a radiograph are insuffi- ciently dense to show in the fluoroscope. Localization by means of a radiograph of the instrument in position at the suspected locality has been used by the author in cases of pulmonary abscess (Fig. I'.Mi). The same method may be used in esophageal cases in which the foreign body FOREIGN BODIKS IN AIR A Nil I'OOD PASSAGES. 223 Fig. 162. Antcro-posterior and lateral radiograph of recumbent patient with bronchoscope in position. Useful for localization in case of small foreign bodies SO far down and far out toward the periphery that they cannot be found. The po- sition and direction of the intruder from the tube mouth, which is at a known and subsequentlv lindalile location, locates the small branch bronchus to be searched at a subsequent bronchoscopy. With, dense foreign bodies like the pin above shown, the fluorescent screen may be used, yielding immediate information. 22-1: FORl-ICX BODIHS IN AIR AND roOD PASSAGES. is suspected to have wandered out of the himen into the tissues. Care must be taken to avoid error from a foreign body being simply in a fold in the lumen. A large esophagoscope should eliminate this jiossi- hility. A sulisequent radiograph with pressure of the tube-mouth against the pin will give positive evidence. A lateral as well as an antero-pos- terior radiograph are necessary in any case. The statements in the earlier work (Bib. 2G9) in regard to unre- liabilit_v of fluoroscopy as compared to radiography for foreign bodies have been borne out by further experience. A foreign body overlying the spine or behind the heart shadow may be invisible by fluoroscopy and yet show up strongly in such a location in the radiograph. In one in- stance, a pin behind the heart shadow showed as black as if drawn with a pen in a radiographic print, and yet was totally invisible to an ex- perienced fluoroscopist with a proper tube. This was in an infant, and therefore a very advantageous subject in which to see a foreign body on the screen. With such results as these among the possibilities, it is use- less to waste time with fluoroscopv for diagnosis as to the presence of a foreign body, because with the instantaneous exposures and rapid de- veloping of to-day. a report may be had in i)0 minutes or less from the time the radiograph is taken. Fluoroscopy, however, may be of advan- tage in foreign body cases in adults for another reason. An expert fluoroscopist v.ith the recently developed apj^aratus can exclude aneurysm and give a report on the functional acti\ity of the esophagus. With foreign bodies not opaque to tlie ray at times information can be ob- tained from fluoroscopic examination of the action of the diaphragm. Under average conditions there may be a slightly greater activity of one side as compared to the other, but any marked diminution of the ex- cursion of the diaphragm on one side points to foreign body obstructing the main bronchus. This is not diagnostic but is a strong indication for bronchoscopy. Fluorescent bronchoscopy in which the bronchoscope and forceps arc guided by the fluorescent shadow will be dealt with in a sub- sequent chapter. In case of a foreign body, which, from its nature, would show very faintly, if at all, in the radiograph, the suggestion of Boyce to swallow a bismuth capsule, is excellent. If the foreign body is sufticiently large to be at all obstructive, the capsule will stop and remain at least for a time at the site of the foreign body. (Fig. 16:5). This not only shows that the foreign body is present, but it shows its position, and, further- more, on dissolving of the capsule, the liismuth is beneficial to any trau- matism or esophagitis that may exist in the neighborhood of the for- eign body. In using the Ijismuth capsule, for the detection of a foreign body not itself opaque to the ray, it is necessary to remember that the I'ORUIGX BODIES IN AIU AND FOOD PASSAGES. 225 progress downward of a bismuth capsule or any large bolus is not ex- ceedingly rapid and may normally be seen in transit. Still more neces- sary is it to remember that in many cases, with a perfectly normal esoph- agus not containing any foreign body, the capsule may hesitate for a moment at the cricopharyngeus and also at the point where the left bronchus crosses the esophagus, and again at the hiatus. The author has noted in quite a number of cases with an apparently perfectly normal Fig. 16,3. kadio.uraph sliowiiig a mctlii>d of locating a foreign body in the eso- phagus. The bismutli capsule was slopped in the esophagus by a foreign body that, itself, does not show. esophagus that the ridge caused by the crossing of the left bronchus was undtilv prominent, and this, in one case, was connected directly with a lodgment of the bismuth capsule for a few seconds in an esophagus which did not contain ri foreign body. In view of this, it would seem to be wise in using the capsule for the diagnosis of foreign bodies not opaque to the rav to wait two or three minutes after swallowing the capsule before 226 Foreign eddies ix air and food passages. taking a radiograph ; but, of course, the wait must not be sufficiently long to permit of the capsule dissolving. In case of small non-obstructive foreign bodies the metliod would not be efifective, and in any case is value- less negatively. \\'hen positive it may be so from an obstruction other than a foreign body. Interpretation of a radiograph is best done by the radiographer ; a few hints to the endoscopist, however, may not be amiss. First in im- portance is to determine whether the foreign body is in the respiratory or in the alimentary tracts, and next in importance is to determine in what part of the respective passages the foreign body is lodged. This is extremely easy in some cases, extremely difficult in others. As a rule, it may be stated that foreign bodies more or less flat, whose plane corresponds to the lateral plane of the body, are in the esophagus and not in the air passages. This applies with a special force to the upper half of the esophagus because the esophagus is collapsed antero- posteriorly ; that is, the anterior wall lies against the posterior wall. The direction of least resistance being laterally, flat foreign bodies project their longest diameter laterally. In the trachea, also, there is a slightly greater diameter laterally at the bifurcation and for some distance above it. Above the sternal notch, however, foreign bodies entering through the glottis are almost always found to have taken the anteroposterior position because of the greater axis sagittally of the laryngeal and sub- glottic lumina ; and this position is most likely to be maintained below, because the posterior wall of the trachea is membranous and yielding. These points are well illustrated in the radiographs Figs. 1(34 and Kio, and are especially plainly marked in lateral radiographs of for- eign bodies in the esophagus as illustrated in various parts of this book. It is customary in the interpretation of a radiograph, when one lung shows dark and the other light, to consider that the dark side contains the foreign body which has occluded the main bronchus with perhaps compensator}- emphysema on the opposite side. Iglauer (Bib. 222) re- ports a very interesting case where this reading was erroneous because the foreign body had, by a vahe-like action, imprisoned more air in the obstructed side, so that there was a verv marked emphysema shown by the radiograph on the obstructed side. Calcified glands are exceedingly common and may, in some instances, lead to error. As pointed out by Dr. George C. Johnston, in connection with one of the author's cases, that of a molar tooth in the bronchus of a boy, calcified glands are always rounded in form, so that in case of any body not of rounded form, there is little likelihood of error ; but it must be remembered that the foreign body must be considered from every point of view, as irregular-shaped bodies may throw a rounded shadow in FOREIGN BODIES IN AlK AND l-(X)I) PASSAGES. 327 certain positions. Furthermore, calcilicd f,'lands arc rarely single, so that any suspicious shadow is apt to he duplicated, if due to a calcified gland. Von Eicken, in a very interesting paper (Bib. oliS), reports a case in which a shadow was thought by the Roentgenologist to be due to a calcified gland, and so it proved to be. There was, nevertheless, in Fic. 164. Radiograph of a coin (half-dollar) in the esophapus of a child of 14 years. This illustrates the method of localization of foreign bodies in the esoph- agus. It is utterly impossible for a Hat body of this size to be trachcally lodged thus in the lateral plane of the trachea. the case a forei.^n liody (hone) which did not siiow in the radiograph, but which was discovered and removed by bronchoscopy. Posith'c films of the tracheo-bronch'ml tree as an aid to localization. A large foreign bod_\- in a large bronchus needs accurate localization, not but that it could be limnd bronchoscopically in every case; but accur- ate localization enables tiie bronchoscopist to go at once to the known lo- cation and thus greatly shorten the period of endoscopic search which 22S FOREIGN BODIES IN AIR AND FOOD PASSAGES. FOREIGN BODIi:S IN LARYNX AND TRACHKA. 239 may be a vital point. 'J'hcre is another class of cases, howe\er, in which the intnider may never be found if there has been no accurate localiza- tion. Small foreign bodies, or those small in one diameter, following the general rule of foreign bodies in the air passages, keep on going down- ward until they get into the smallest possible bronchus. Thus needles and small headed pins get very far down and \ery far out toward the perijihery of the lung and into a very small branch bronchus of which Fig. i66. Illustration of a positive film used for overlaying to assist in lo- calization of foreien bodies or lesions in the thorax. The lower white line ( U, D) corresponds to the diaphragm, the nrddlc line (1' 1') In ihe dome of the pleura. These Hnes assist in placing the overlay. The upper line (V C), cor- responding to the vocal cords, is occasionally useful. Twelve photographic en- largements arc on hand so that a film of the size (rather than the age) is avail- able for any sized patient. The few minute branches that go below the line, D. are those posterior to the apex of tl.e dome. there are many. To search all nf ilicsc with a probe or niiiuiie tube con- sumes a large amount of lime. The atithor has devised ior help in these cases a positive transparent film of the tracheo-bronchial tree ( b'ig. HWi). The film being a "positive" the tree is transparent. The him is laid over the negative of the ])atienl sliowiiig the foreign I'odv. when the foreign body will show through the transparent tracheo-bronchial tree of the ovcrlving positive film. In pl.acing the film, bony landmarks are not re- 230 FOREIGN BODIES IN AIR AND FOOD PASSAGES. liable because of the wide variation due to the phylogenetic recency of the upright posture. X'isceral landmarks are necessary. The two im- portant visceral landmarks are the dome of the pleura and the dome of the diaphragm. It is needless to say the tracheo-bronchial tree necessarily lies in the body of the lung between these two landmarks, and lines cor- responding to these are placed on the film. Twelve photographic enlarge- ments and reductions are on hand so that a film of the size (rather than age) is available for any sized patient, the size being chosen by matching the size between the dome of the pleura and that of the diaphragm as shown on the radiograph of the patient. All this work is done, of course, in a darkened room, with a stronglv illuminated shadow-box; and in the Fig. 167. Ilhi.'itratii,!.' on tlie left, aliscess ( rctouclicd). On the right the abscess is localized in the right inferior lolje bronchus by the method of overlaying. The localization coincided with the endoscopic findinus'when the abscess was evacuated bronchoscopically. event of the foreign body showing very faintly on the radiograph of the patient, it is strengthened by an ink-mark on tlie uncoated side of the negative, which can be readily erased afterwards if desired. Corroboration of the usefulness of these films has been forthcoming from a number of sources. (See article by R. C. Lynch in New Urleans Med. and Surg. Journal, Dec, 1913). To prevent error in the use of these films, as with any method of interpretation of a radiograph, it is necessary to be on guard against false localization due to displacement of the lung by atelectasis, and es- pecially by the compensatory emphysema on the other side. Another source of error, of course, is that the positives of the tracheo-bronchial tree are made from the tracheo-bronchial tree of a cadaver, whereas bronchoscopic study of the tree shows that it is not quite in the same FOREIGN BODIES IN AIR AND FOOD PASSAGES. 231 position in the living. The injection prejiarations of I'.runings come nearer those of the li\ing tree than any other that the author has been able to find, and therefore he has used them in making the positive films. Caliper-guide method of localization. This method, suggested by Dr. John \\". Boyce and perfected by the author is intended primarily for bringing the tube mouth in close relation with a small foreign body that cannot be found because it is in a minute bronchus of which there are too many for each to be searched. In conjunction with the lateral radio- graph the caliper-guide will bring the point of the bronchoscope, after- ward at bronchoscopy, in close relation with the foreign body, thereby greatly diminishing the number of small bronchial tubes to be searched ; this method being used, of course, onlv in case of small foreign bodies Fig. i68. lUustratitiK a positive radinRraphic film of tlic traclico-hroiicliial tree u.sed for overlayincr to assist in localization of a foreign 1)0(ly. The left hand illns- tration shows the lilm laid over a negative of a patient in whose left main hronclms was a pin. Localization verified by bronchoscopy. The shadow of the pin is strengthened with ink. which have fallen into a very small bronchus far down or far out near the periphery of the lungs. The lateral placement of the point of the bronchoscope depends ujion a m;irk placed on the skin by the radio- grapher who determines the |iiiiin liy an anterior-posterior radiograph (Fig. Ifiti). Value of luuiativc radiography. The negative rejjort from liie radio- grapher remains to-day as it always has been, unreliable, I)ecause many bodies are not opaf|ue to the ray, and. moreover, the foreign body may not be the same as that of which we get ;i history. In addition to this, even metallic bodies at times do not show, b'or instance, in one of tlie author's cases, that of an enormous woman of Tv.\ years, expert radio- 233 FOREIGN BODIES IN AIR AND FOOD PASSAGES. graphers, for a period of two years, made quite a number of exposures that failed to demonstrate a tack which they finally demonstrated to be present (Fig. ]70) and which the author removed bronchoscopically. Such occurrences will doubtless be less and less frequent because of the steady advance in the technical perfection of radiography. A number of Fig. 169. Illustrating llie position of the caliper-giiiile in getting the adjust- ments by which the point of the bronchoscope can be brought, later at bronchos- copy, in close proximity to a foreign body. For use in case of small foreign bodies in minute bronchi. Suggested l)y Dr. John \V. Boyce and perfected by the author. Inadvertently, in making the illustration, a radiograph of an esophageal- ly lodged foreign body (safety-pin) was used, but the principle is illustrated just as well. recent cases have made it quite clear tiiat it is necessary to do a bronchos- copy if there is any reason to suspect from the history that there is a foreign body located somewhere in the air-passages or in the esophagus, notwithstanding a negative ray finding and a total absence of symptoms, for it is remarkable how tolerant the trachea, bronchi and the esophagus become to the presence of foreign bodies after the initial symptoms im- I"I)RKIGN HODIi:s IN AIK AND Kndl) PASSAGES. 233 mediately following the accident liavc subsided. A negali\-e .\-ray may be very misleading, because, as shown by b'rank C. Todd ( llib. ."ill) a radiograph may not include the region in which a foreign body is located. Xotwilhstanding the fact that there was no clear history of a foreign body having been seen in the child's possession, and despite the negative radiograph, Dr. Todd bronchoscoped the child without a general anes- thetic and skilfnlly remo\-ed the tack. j. W. .Murphy (Rib. 3!IT) reports P'li;. I/O. kiuiioyraph .showing tack in lironclnis a woman '• 5,i years. This tack failed to show in radiographs taken by expert radiographers at intervals for a period of two years before getting the tack to show. Tack rciTiovo. Do not h(jld uji the patient by the heels, lest the foreign body be dislodged and asphyxiate the patient by becoming jammed in the glottis. •1. Do not fail to have a radiograph made, if possible, whether the foreign body in (|uestion is of a kind dense to the ray or not. '). Do not fail endoscojjically to search for a foreign bmly in all cases of doubt. I'l. Do not pass an esophageal bougie, probang or other instrument l)lindly. 7. Do not tell the patient he has no foreign bod\- until after radio- graphy, i)hysical examination, indirect examination, and endoscopy all have proven negative. CHAPTER XIII. Foreign Bodies in the Larynx and Tracheobronchial Tree. Etiology. In the air passages, which are not intended for sohds. foreign bodies that get in through natural passages can only do so by passing the normal safeguards which are mainly reflexes. Hence any- thing which interferes with these reflexes is the chief etiologic factor. Sleep, anesthesia, intoxication, syncope, delirium, mechanical mterference of masses of disease as in malignancy, tuberculosis, etc. The reflexes may interfere with each other ; as, for instance, the sudden inhalation which precedes or follows coughing, laughing, sobbing, and unusual ex- ertion. The protective reflexes act chiefly in two groups. The laryngeal closing reflex and the bechic reflex. Laryngeal closure for normal swal- lowing is chiefly in the tilting and closure of the upper laryngeal orifice. The ventricular bands help but slightly and the epiglottis and the vocal cords not at all. Foreign bodies going in with the inspiratory blast, must run the gauntlet of the following guards : GAUNTLET TO BE RUN BY FOREIGN BODIES ENTERING THE LOWER AIR PASS.\GES. 1. Epiglottis. 2. upper laryngeal orifice. 3. Ventricular bands. 4. Vocal cords. 5. Bechic blast. The epiglottis makes somewhat of a fender, efficient in projiortion as it hangs backward toward the posterior pharyngeal wall. The upper lary-ngeal orifice, composed of a pair of movable ridges of tissue has al- most a sphincteric action, besides its tilting movement. The ventricular bands can appro.ximate under powerful stimuli. The vocal bands act similarly. The one defect in the etificiency of both sets of FOREIGX i;oi)Ii;s IN LAKVXX AND TRACHEA. 237 bands in barrinj;; out intruders is the tendency to take an inspiration pre- paratory to the cough excited by the contact of a foreign body. This inspiration is not invariably taken, however. A sHght explosive cough can be taken without inspiration, especially if it start near the end of an inspiration, but following this or any other coughing effort is a deep in- spiration which is i)robably the most etticient factor in the entrance of foreign bodies into the lower air passages. Gottstein collected statistics which showed that (i(i per cent of the cases of foreign bodies in the air passages occurred in children. This may be in part due to a less degree of automatic protection to the en- trance of foreign bodies in the air passages; but doubtless is, to a greater extent, due to the fact that children are prone to I'lay, run, laugh and attempt to speak with various foreign bodies in the mouth. It does not seem probable that children put foreign bodies in their mouths more fre- quently than adults when it is considered how many women are in the habit of putting pins in their mouths especially when dressing, and how many workmen jilace small foreign bodies, such as tacks and nails and the like in the mouth. C)f course in infants there is a well known ten- dency to put everything into the mouth, as this seems to be one of the means by which the infant mind acquires knowledge of material things. Soluble material, such as candy, or foods which very quickly disinte- grate, such as bread, toast, and the like, need cause no uneasiness, as they are very soon coughed up and expectorated. Meat, if composed purely of muscular fiber or fat, is practically always expectorated. If, however, it is firmlv attaciied to periostium or bone or cartilage, it may constitute a foreign body for which bronchoscopy should be done. It is quite re- markable that all strictly food substances are rather rare in the bronchi, while the portions of food which should be and usually are rejected, are not at all uncommon, such as the seeds of fruits, the shell of nuts, bone and the like. ()f course it is not nicmt to refer here to the various food substances such as dried maize, beans, ])eas and the like, which are put into the mouth by children in play and not strictly for food. It is well known that any light particles of dust usuallv are largely removed by the cilia, while heavier particles of dust become encysted as in anthracosis. Just where the border line exists lietween the foreign body of such small size that it ma_\- become encysted, and the larger bodies which will form an abscess, has never been determined, and it is very difticult to determine because the smaller bodies which form an abscess usually become dis- integrated, or are lost in pus and are never discovered. It seems quite certain that a large proportion of the non-tuberculous pulmonary ab- scesses are due to this cause. In the author's collection, pins are the most frequent of foreign bodies in the bronchi. Next comes various forms of 238 Foreign eudies in larynx and trachea. hardware, and then various vegetable substances, bones and coins. Pea- nut kernels are among the most fatal of foreign bodies, and this does not seem to be due to comminution and multiple abscesses, so much as to the peculiar irritating effect of the peanut kernel upon the tracheo-bronchial mucosa. A metallic body will be tolerated for a long time with little re- action, whereas a peanut kernel will set up violent local reaction in a few days as shown by the author's cases to be cited later.* Dr. E. \V. Car- penter (Bib. 73) reports the case of an infant of sixteen months that was asphyxiated by the pus liberated from an abscessed lung following the aspiration of a peanut. J. A. Stucky (Bib. .Til) and many others re- port fatal cases. Metallic bodies if of such shape as completely to occlude a bronchus, usually cause rapidly developing fatal abscess by the stagna- tion of secretions which cannot be coughed out. On the other hand for- eign bodies that do not occlude the lumen may produce little reaction for a long time, provided the lumen is not occluded by the reactionary swell- ing of the mucosa. Sooner or later this occlusion occurs, however, and the patient usually succumbs. Considering the millions of people who are carrying about with them loose teeth or loose artificial dental attach- ments it is a very remarkable thing that relatively so few foreign bodies to be classed as dental find their way into the air passages. Large arti- ficial dentures are bv no means uncommon in the esophagus and of course by reason of their size they could not well get into the air pas- sages. In the author's opinion it is a great tribute to the skill of den- tists that so few foreign bodies are to be classed as dental. Teeth may be knocked loose in a fall and be aspirated as in one of the author's cases. In another case he treated laryngeal stenosis that followed an abscess caused by impaction of a tooth in the subglottic region. The rootless deciduous tooth had shot out of the dental forceps in the hands of a skilful dentist. Dried vegetable substances such as beans, peas and maize soon occlude the lumen and are rapidly fatal. Those interested in the further pursuit of this interesting phase of the foreign body question are referred to the excellent article of D. Bryson Delavan (Bib. 107) which also gives a number of references. An excellent article on the experi- mental pathology of foreign bodies in the lungs was written bv George 1'. Wood. (I5ib. .^85.) iriiy do forciijn bodies lodge at certain localities in the air passages? Lodgment at some of the most fre(|uent sites is accounted for by seem- ingly adequate reasons. The factors may be classed in two main divis- ions : 1. (a) The size and shape of the foreign body: whether long, broad, pointed, angular, disk-like, etc. (b ) Its surface, whether rough *So uniformly Is this olaserved that the term "peanut bronchitis" has come into rommon use in the author's cUnic. FOREIGN BODIES IX LAKV.W AND TKACIIF.A. 239 or smooth. (2) Its physical properties, resiliency, plasticity absorptiv- ity, etc. 2. The anatomic peculiarities of the various localities, (a) Angles, arcs, (b) Fixed and motile narrowings. The size, shape and surface of the foreign body has less to do with the particular site at which it is most likely to lodge than have the anatom- ical regional peculiarities. A pointed body may catch at any location if the point be downward as it often is in the esophagus. In the air passages, however, pins are almost invariably head downward, and by a ratchet-like action, the point preventing return, work toward the low- est point. In the air passages the narrowness, quiescent and spasmodic of the larynx halts many foreign bodies which may be retained because of peculiarities of their shape, or by a projection; or by entering a ventricle. As in one of the author's cases, that of a safety-pin, one part may drop through the glottis while another part not passing through, the intruder is i)revented from going either way. Having passed the cords a foreign body may be wedged in the subglottic space, either on its way down or when it is shot back upward by the bechic blast. Below the subglottic siKice the next point of fre(iuent lodgement is the bifurcation. Lodgement here is due rather to the shape of cross-section, elongated laterally witii two openings laterally below, causing the intruder to be caught crosswise. More often it is the etfort of the intruder to enter either the right or the left bronchus, both of which are smaller than the trachea. The bronchi do not diminish between branches. That is, the diminution is at the points of subdivision ( monopodic branching, not true bifurcations), and between these the bronchus is cylindroid, not tapered. Therefore a foreign body usually halts with its largest diam- eter at or immefliately below a point where a lateral branch is given off. Greater frequency of riglit-broncliial invasion. The right bronchus is invaded by foreign bodies more frequently than the left. Statistics collected by Gottstein show that 7-"). 4 ])er cent of foreign bodies entering the bronchi w'ere in the right bronchus. \'on Eicken found 70.2 per cent- Prcol>raschensky, Oil per cent. Morrell Mackenzie, 02. .5. The reasons for this are anatomical and physiological. 1. The greater diameter of the right bronchus. 2. Less angle of deviation of the right bronchus. 3. Situatiiin of the carina to the left of the long axis of the trachea. 4. The action of the trachealis muscle. 5. The greater volume of air going into the riglit broiicluis on in- spiration. The first three of these factors are shown in the schema Fig. 1T1, The riglit bronchus is in size and direction the continuation of the 240 I'OREIGN BODIES IN AIR AND FOOD PASSAGES. trachea ; the left bronchus in many cases simulating a lateral branch of the trachea rather than a bifurcational half. The situation of the carina to the left of the long axis of the trachea is important. Heller and \'. Schrotter found the carina to the left in 57 per cent, in the middle line in -13 per cent and to the right in 1 per cent. Sir Felix Semon and Morrell Mackenzie's joint results were: left, .59 per cent, middle line. 3.5 per cent, riglit, il per cent. These statistics are all based on the cad- averic anatom)-. The author feels certain that the living anatomy shows a much more marked preponderance of left-sided situation of the carina. Fig. I/I. Schema showing three anatomical reasons for the greater frequency of right-sided lodgement of foreign bodies in the bronchi. The right bronchus (Rt. B.) is almost as wide (2.3 mm.) as the trachea (24 mm.) and it deviates much less than the left from the long axis of the trachea. The carina, C, is to the left of this axis, (.\fter Sir St. Clair Thomson.) He regrets that he did not keep a record of this point in all of his bron- choscopic cases. But in 40 cases where he kept a record the carina seemed more or less to the left in all but one and in that case the carina seemed central. These cases were, without known pathology that could alter the position of the carina. The observation is submitted with ac- knowledgment of the possibility of error, because of the alteration of position of all the thoracic viscera due to position of the patient, the bronchoscopic tube and the pulsatorv and resjiiratory movements. Fur- thermore, the observations were incidental antl no time was taken to in- FOREIGN BODIKS IN AIR AND FOOD PASSAGES. 241 sure accurac}'. From j^eneral observation and the instinctive habits of work, the aiitlior has come always to move the head to the right to get into the left bronchus while the head is not moved to the left simply to cause the bronchoscope to enter the right bronchus. It always goes there naturally with the head in the middle line, though, of course, the author's custom of turning the lip of the bronchoscope to the right for entering the right bronchus assists. The action of the musculature at the carina in drawing the carina to the left and thus reducing the size of the left bronchial orifice is thought by Snow to be one of the chief factors in the preponderance of foreign bodies in the right bronchus. The fifth factor mentioned above does not seem to have received the attention it deserves. In one of the author's cases, that of an extremely dyspneic child, there was demonstrated by physical examination by Dr. H. T. Price very little air going into the right side and none at all into the left. The foreign body was in the subglottic space. This case seems to pro\e what theoreticallv would seem probable from the greater size of the right lung, that there is a greater volume of air rushing through the right bronchus at each inspiration. Why is the middle lobe bronchus rclatiiely so rarely invaded by foreign bodies? The middle lobe bronchus is rarely invaded. The author has seen but two such instances, in over two hundred cases of foreign body in the bronchi. The relative rarity of invasion possibly is due to the fact that the middle lobe bronchus is given off anteriorly^ consequently gravity tends to lead the foreign body into posterior branches because the patient docs not lie on his face but on his back. This theory of the author has never been positively proven because for- eign bodies are rarely radiographed soon enough after the accident, i. e., before the patient has lain down. Excluding the effect of gravity, the angle of the giving off the middle lobe bronchus does not seem less favorable for the invasion by a foreign body than do some of the dorsal branches of the inferior lobe bronchus which are so fre(|uently invaded. True, in looking down the lumen of the rigiit stem bronchus the orifice of tlie middle lobe iironcluis is not seen, which would lead one to think that it is out of the direct route of the invader. To some extent, how- ever, this is also true of the dorsal branches of the inferior lobe bron- chus. The inspiratory air blast eiUering the middle lobe iironchus pos- sibly is not (|uitc so great. It is hoped that future observation will clear up this point. William llruce Smith reiJorts an interesting case of mid- dle lobe brnnrluis invasion. Spontaneous expulsion of foreign bodies from the trachea and bronchi. Fortunately for the patient, but unfortunately for other pa- tients, foreign bodies are occasionally coughed u[>. Still more unfortu- 242 FOREIGN BODIES IN LARYNX AND TRACHEA. nate is the fact that no distinction ordinarily is made between a foreign body coughed out of the lar\'nx and the much rarer event of one coughed up from the bronchi. It is for the latter reason that statistics are al- most valueless. There have been too few cases of spontaneous expul- sion where the location of the intruder was precisely known. Man- ifestly the expulsion of a large, light foreign body in the larynx or sub- glottic trachea is no basis for deduction as to a specifically heavy foreign body in a minute bronchial branch at the periphery of the lung. In these days of safe and easy bronchoscopy with an enormous percentage of .successes, no one, who is well informed, for one moment considers the advisability of waiting for a foreign body to be coughed up ; but in the event of bronchoscopy failing to remove the intruder, the very high mortality of thoracotomy for foreign body, together with a certain per- centage of failures to find the intruder by external operation ; and, furthermore, as there may be present at consultation someone who will recite a case where the foreign body was coughed up — for these reasons, it is wise to consider the possibilities. The chance of the bechic expulsion of a foreign body depends largely on its nature. Sharp for- eign bodies, such as pins lying point upward, have never been known to be coughed up, for the reason that the pin will stick at the very first angle encountered. On the other hand, smooth, rounded bodies have a tendency to be tightly fixed in the bronchus, and the absorption of air below causes a negative pressure which pulls the foreign body tighter and tighter into the bronchus with less and less air below, and conse- quently less and less chance for expulsion. The patient cannot draw in air enough beneath the foreign body for the expulsive efforts. In the third class might be considered the foreign bodies that are quite heavy, such as bodies of iron, pewter, lead, and the like. These are very rarely ever coughed out because of the little surface they present relatively to their weight. The expiratory blast has not sufficient force, relatively to the surface against which the force is applied, to expel the intruder. We come then to the class of foreign bodies which are not hca\y nor sharp-pointed nor so smooth as to lodge tightly, thus pre- venting air from being drawn below them, and we find such bodies are the most likely to be expelled. The chances are better before than after such a body has reached the smallest bronchus it can enter. It is not so tightly impacted at first unless its size is so large as to nearly oc- clude the trachea or bronchi. In that case it is draw-n in by the in- spiratory blast and accumulates energy on the way according to the well known law of physics. This accumulation is less, directly as the actual weight, and also as the specific weight, except in cases of foreign todies which fit quite closely to the tracheal or bronchial lumen. This ac- FOREIGN BODIES IN LARYNX AND TRACHEA. 843 cumulated energy in travel cannot occur in expulsion until after impac- tion is released, because it does not l)csi;in until the body bas begun to move. Hence there is a great disadvantage in expulsion as compared to inhalation of a foreign body. This is not sufiicient to overcome the relative advantage which should accrue from the fact that an exjjulsive effort in coughing is very much greater in jiower than any inspiratory effort can be, the difference being probably twice as much in a coughing expiratory pressure. Then we have the absorption of air drawing the foreign body downward in the case of round foreign bodies which fit the bronchial lumen, either at first or after swelling has taken place. This accounts for the fact that corks and similar substances, though of low specific weight, are rarely coughed up. Pins almost invariably enter the air passages point upward and the point constitutes a ratchet-like mechanism which resists any other movement than downward ; and moreover, the pin offers but little surface upon which the expiratory blast in coughing may act. Furthermore, to get out at all, it must pro- ceed with its long axis more or less in the axis of the passage through which it must go. .Anyone who will attempt to throw any sort of a pin ])oint first, will find that the head of the pin, being heavier, very promptly begins to turn round in advance of the point. With prac- tically all i)ins this would be impossible in expulsion through the air passages for want of S])ace, and the turning would cause the point to stick even if the passage were straight. On the contrary, a number of bends and turns have to be accomplished. l'"or tiiese reasons, a pin that has gotten down to the bifurcation or below, practically never is coughed up, and if it is in the trachea it is almost certain to reach the deeper air passages in a very short time by the combined action of grav- ity and the ratchet-like action of the ])oint. Another factor against the coughing up of a foreign body is that of gravity. This led in the pre- bronchoscopic days to the holding up of the patient by the heels in order to let the foreign body fall out. This was occasionally successful within a few days of the accident, though it sometimes caused a spasm of the glottis and demanded immediate tracheotomy. ( )f course such a pro- cedure is not to be considered in these days of bronchoscopy ; but the fact that it sometimes succeeded indicates the efl'ect that gravity has in in- terfering with the coughing out of foreign bodies. As elsewhere men- tioned, the dog has a vastly more effective mechanism for ridding his bronchi of foreign bodies than is possessed bv human beings. To what extent the more nearly iiorizontal trachea and bronchi of the dog is con- cerned, has not yet been determined. It sccnis prol)ablc. however, that the erect posture of human beings, which is, phylogeneticaliv, verv late, is in a measure responsible for the very inefiicient efforts of nature to 3-14 FOREIGN BODIES IX LARYXX AND TRACHEA. cough out foreign bodies. Another factor which favors the inhalation of a foreign body and retards its expulsion is the well known physiological action of the glottis. During inspiration the glottic chink is widened to the maximum, while on expiration it is only partially open and it does not open to the maximum even during the expulsive efforts of the cough. Moreover, the foreign body itself, being driven up against the under side of the vocal cords, or even against the tracheal wall, has a strong influence in exciting reflex contraction which closes the glottis. Still another impediment to the expulsi\e efforts of the cough is the fact that the bronchi contract very greatly during cough and the trachea also contracts to a certain extent. This contraction has been witnessed by every bronchoscopist, as it is one of the difficulties with which he has to contend in bronchoscopy. Perhaps one of the most important factors in the defeat of the bechic expulsion of foreign bodies is the fact that after each coughing effort there is a deep inspiration, during which the bronchi are dilated and the inspiratory blast has the effect of carrying the foreign body deeper and deeper, aided by the negative pressure below. In deciding the chance of spontaneous expectoration of a foreign body in the bronchi it is necessary to remember the very inefficient coughing and expectorating mechanism of children. Summarizing, we divide for prognostic purposes all foreign bodies into three classes : 1. Those of high specific gravity. 2. Those of low specific gravity, ( including hollow bodies with relatively large surface). 3. Those of intermediate suecific gra\ity. In the first class we may tell our patient that there is almost no hope of the intruder ever being coughed up in case of adults and ab- solutely none in infants and very small children. In the second class there is a chance of expectoration in older children and adults, almost none in children, none at all in infants. In the third class of substances the chances of expectoration of the foreign body in either adults or children are remote. Long, thin, pointed and relatively heavy bodies like pins and needles are never coughed up from below the glottis. In any case, the author's later experience confirms his earlier statement (Bib. 2(59) : namely, "We do full justice to our patients when we tell them that while the foreign body may be coughed up. it is verv danger- ous to wait; and. further, that the difficulty of removal increases with each hour the body is allowed to remain." Magnetic extraction of foreign bodies. Many of the mechanical problems, and also the problem in certain cases of finding the foreign FOREIGN HODIKS IN I.XKVNX AND TRACHKA. 2-t5 body, would be solved if magnetic extraction were feasible. It bas yielded such wonderful results in oiilithalmology tbat its use in bron- choscopy at least seemed worthy of development. Ten years ago the author experimented quite thoroughly and the results of the experiments were published in The Laryngoscope (Bib. 233). Only four of the conclusions need be mentioned here, namely : 1. The foreign body must be of iron or steel, partly or wholly. 2. The body must be free to move. 3. The attraction of the magnet for the foreign body is no greater than that of the foreign body for the magnet, hence : 4. The probabilities of magnetic removal are directly as the size of the foreign body, within the limits of size i)ermitting mobility. It will be seen by the foregoing that the magnet is only useful in precisely those cases which are most favorable for bronchoscopic meth- ods. Unfortunately magnetic extraction does not assist in those cases beyond the limits of bronchoscopy. R. C. Lynch (Bib. 3.50) reports a successful case of magnetic extraction, as does also Iglauer (Bib. 221). Mortality and results of bronchoscopy for foreign bodies: In con- sidering the mortality of bronchoscopy, two facts stand out prominently. The first is that we should distinguish between the mortality of the method on the one hand, and the mortality from the lack of prompt- ness and precision in performing it. For instance, the reports of four of the fatal cases show that the patients died upon the table of asphyxia for want of a prompt bronchoscopy. Ingals, who is a pioneer bronchoscopist of large experience, writes : "Owing to numerous cases that come to my knowledge where inexper- ienced men have performed bronchoscopy with fatal results, and owing also to my recollection of the difficulties I experienced in the beginning of this work, I think it is highly desirable that some statement be made which would deter the inexperienced from undertaking these operations needlessly. I believe the fatalities witii inexperienced people would run between Id and 20 per cent if all cases could be collected." \'on Eicken collected 300 cases of bronchoscopy for foreign bodies up to and including the year litOS. The total mortality from all causes is given as 13.1 per cent. His statistics show for the [)re-bronclio- scopic period, 'rZ per cent. This brought into strong contrast the won- derful results of bronchoscopy even in the hands of beginners, as many of the cases were, and is a tribute to Killian, the father of bronchoscopy. The statistics of li'oii and litio were collected by Kahler, consisting of 2!)1 cases with a mortalitv of 27. making li.(i |)er cent. Of this mortal- ity, not a single case could be attributed directly to bronchoscopy, but rather to the results of the foreign body itself or of blind methods of 24G FOREIGN BODIES IN LARYNX AND TRACHEA. removal attempted prior to the bronchoscopy. The statistics of these two years, as compared with those collected by Kahler of the time prior to 1909, show clearly the improvement in technic and instruments, as well as in the personal skill of the various operators. As Briinings points out, if it is desired to get at the exact mortality of bronchoscopy per se, it will be necessary to include in statistics only the cases in which the foreign body has not been long present, because of the secondary changes that take place after a more or less prolonged sojourn of the foreign body. In preparing a "Rapport" for the International Medical Congress (Bib. 270), the author collected 171 cases of bronchoscopy for foreign bodies done in the United States ( European statistics being in charge of the co-rapporteur, Prof. Killian) by \arious operators. In the 171 cases there were nine deaths (.5.3 per cent J. This does not include four deaths due to asphyxia for want of promptness in performing bron- choscopy. Of these, lot! were removed, 14U by peroral bronchoscopy, 23 by tracheotomic bronchoscopy. Of the fifteen unsuccessful cases, twelve were failures to find the foreign body known to be present, and only three were failures to remove it when found. In the twelve cases mentioned as failures to find the foreign body are included four in which the foreign body had been seen when higher up. After escaping into the deeper, minute bronchi it could not be re-located bronchoscop- ically, though still showing in the radiograph. The statistics of the author's own clinic and of his cases elsewhere, which are not included in the foregoing, are as follows : Of the last 182 consecutive cases of bronchoscopy for foreign body there was a total of three deaths (1.7 per cent) from any cause whatever within one month, though a few of the cases could not be followed this long. Of the 183 cases all were peroral bronchoscopies. Of the 182 cases, the foreign body was removed in 177. Of the five failures to remove foreign bodies known to be present, all were failures to find a small foreign body that was in a small branch bronchus close to the periphery of the lung. Two of these cases were recent. The percentage of the author's failures will doubtless in- crease in the future, since he now gets the cases upon which others have been unsuccesful and doubtless he will be equally so ; though he has hopes that the elsewhere mentioned recently perfected means of locating small bodies in small bronchi near the periphery will diminish for every one the number of cases in which the intruder cannot be found. Indications for bronchoscopy in suspected foreign body cases. It would be a mistake to elaborate many fine points of distinction as to the indications for bronchoscopy in suspected foreign body cases for -three reasons: (a) A foreign body ma\' be present without any demonstrable signs or symptoms, (b) In all cases of doubt a bronchoscopy should FORKICN r.ODir.S IX LAKVNX AM) 1RACHKA. 247 be done anyway, (c) Disease may be found to account for foreign body symptoms. The first two reasons are so abundantly proven as to need no citation of cases. The third reason (c) may be supported by two cases selected from among a number because the bronchoscopic diagnosis was of fundamental therapeutic importance. A man of forty years was referred to the author for removal of a wooden toothpick which was thought by the patient to be the cause of a cough of sudden on.set following "cjioking on a toothpick." No foreign body was found but an indurated ulcer at the carina lead to a diagnosis of lues which was verified later. Mr. H. J. Davis reports an interesting case in which a fourteen-year-old child insisted that she could feel a pin in her chest. The radiograph was negati\e but on passing the bronchoscope he found a diphtheritic membrane in the trachea though none was present higher up. Acute disease, such as the bronchopneumonia of children and unex- plained "edema of the lungs," may in a few cases suspected of foreign body origin be indications for bronchoscopy. The simulation of tuberculosis, chronic pleurisy with effusion, bron- chitis, asthma, bronchiectasis and other chronic lung affections by pro- longed sojourn of a foreign budy renders bronchoscopy indicated in cer- tain cases of these diseases. Instances have been reported by the author and others where these diseases have actually arisen secondarily to the presence of a foreign body. Of course it is not meant to urge bron- choscopy for foreign bodies in all cases of the diseases mentioned except bronchiectasis ; but bronchoscopy is indicated in any case where there is a possibility of foreign body origin and in certain cases it is indicated for assistance in diagnosis and treatment of the diseases independently of a foreign body element. A radiograph may confirm or negative the indica- tion. This matter is more fully considered in connection with the prob- lems presented by bronchial foreign body cases of prolonged sojourn. The various indications for bronchoscopy in suspected foreign body cases may be summed up as follows, though this is by no means a complete category : 1. The appearance, in the radiogra])h, of a foreign body or of any suspicious shadow. 2. In any case in which there is a clear history of the patient hav- ing choked on a foreign body, and in wliicii the foreign body was not afterwards found. In this coimection, it must be borne in mind tiial f(jreign bodies ma\ be nuiitiple, as in one case of the author, in which a bronchoscopy was not done because after the accident a gourd seed was found in the 248 FORKIGN r.ODIK.S IN I.ARVNX AND TRACIIKA. Stools. I'hree months later he removed a gourd seed from the bronchus. The child had been playing with a whole mouthful of gourd seeds. 3. In any case in which there are signs of stenosis of the trachea or of a bronchus. 4. Any case suspected of bronchiectasis. 5. In the absence of anv foreign body history, the patient giving symptoms of pulmonary tuberculosis, in which the bacilli cannot be found in the sputum and especially if the physical signs are at the base, par- ticularly the right base, and above all, if there are also physical signs of pleural effusion. (i. In case of doubt, bronchoscopy should be done anyway. Contra-indications to bronchoscopy for foreign bodies. The author has had no cause to modify his views previously expressed (Bib. 269), namely, that there is no absolute contra-indication to bronchoscopy. In some cases of extreme exhaustion, for instance when a patient who has already had too many bronchoscopies, it may be advisable to delay until the patient recuperates. Pneumonia of any form is certainly no contra-indication. It has been the author's custom to remove the foreign body even at the height of pneumonia, and invariabh- the influence of the removal of the foreign body has been good, rather than otherwise. Pul- monary abscess and other local lesions due to the presence of the foreign body itself, far from being contra-indications, are indications of the strongest kind for immediate bronchoscopic removal of the intruder. Gangrene of the lung is not a contra-indication to bronchoscopic removal of a foreign body unless the patient is moribtmd. Gtiisez has success- fullv treated gangrene of the lung bronchoscopically. It goes withottt saying that if the patient is dying from obstruction due to the foreign body, an immediate bronchoscopy is indicated; but if the patient is mori- bund from other causes, bronchoscopy is contra-indicated until the pa- tient has rallied. Serious organic disease, such as aneurysm, does not constitute an absolute contra-indication, for unless the patient's immedi- ate condition is serious from the aneurysm, he will live longer with the foreign body out than in. The author has had three foreign body cases in each of which a diagnosis of the vague syndrome called "status lym- phaticus" had been made by a competent internist, and yet nothing vm- usual was noticed at the bronchoscopy, nor afterward. In a number of other foreign body cases a slight degree of thymic compression was noted incidentally at bronchoscopy. Xo anesthetic was used in any of these cases. The author quite agrees with Clark that "status lymphat- icus" is no contra-indication. When a patient is in bad general condi- tion, but not dyspneic, the question arises whether it is wise to wait for the patient to recuperate before doing the bronchoscopv for removal. FORKICN BODIES IN LARYNX AND TRACHKA. 349 Tlic situation is best illustraleil by tbe following case: Three days after having aspirated a pin, an infant was sent from a distant city where it iiad been subjected to an oral bronchoscopy of one hour's duration, fol- lowed Ijv a tracheotiimy and a tracheotomic bronchoscopy of two hours' duration on the day after having aspirated the pin, involving an ether anesthesia of one hour's duration the first day and of two hours' duration the second day. Then it was subjected to a day's travel. W hen the child arrived it was ijuite e.\hausted from the various ordeals and the interference with regular nutrition. The question arose whether under these circumstances it were better to do the bronchoscopy at once or to wait for recuperation. The only objection to waiting was that the difficulty of removal usually increases steadily with each day that elap.ses after the inspiration of a \'ery minute foreign body into a very small bronchus. For this reason, immediate bronchoscopy was decided upon and successfully executed through the mouth. There was no increase in the exhaustion and the child rallied well and was sent home a few days later. Had the foreign body been of larger size, instead of in a small broncinis which could have easily swollen shut by a few days longer wait, the author and his medical advisors would have decided on waiting for the child to rallv before subjecting it to any further ordeal Fortunately, we were able to do the work without anesthesia. J lad a general anesthetic been retjuired, it doubtless would have involved very great risk in the exhausted condition of the child. Had dyspnea been present, of course immediate bronchoscopy would have been obligatory and no (|uestion of delay could have been considered for one moment. In view of such experiences as these, tbe author feels that the (|ueslion should be decided on the following basis: In cases without dyspnea, where a large foreign body is present in a child very much exhausted from any cause, it is better to wail, under careful watching, for recu()era- tion : and if general anesthesia is to be used, it is quite imperative to wait. If. on the other hand, the foreign body is of the nature of a small pin or needle that has invaded a very small bronchus far out toward the jjeriphery of the lung, it is better to proceed at once without any an- esthesia, general or local. If there is dyspnea present, immediate bron- choscopy is absolutely imperative, and it must be done, without anv an- esthesia, general or local. We are, of course, speaking of children only: in adults there would be little or no danger in the use of a local anes- thetic. In ]iassing, it may be mentioned that in cases such as the one cited above, the inefficiency of the infantile cough in the remoxal of se- cretions must be borne in mind as mentioned under "Drowning of the patient in his own secretions." 250 FOREIGN BODIES IN LARYNX AND TRACHEA. Choice of time to do bronchoscopy for a foreign body. The choice of time to operate is as soon as possible after the accident. The difficul- ties of removal increase steadily from that time onward. The bronchi will swell shut and the orifices will be entirely obliterated temporarily by edema, later by the organization of granulation tissue, or the granula- tion tissue will, by its bleeding, render much more difficult the bronchos- copic removal, or the secondary changes, such as strictures, will enor- mously increase the difficulties. The patient's health will deteriorate, making him a less favorable subject for bronchoscopy, and occasionally the foreign body may escape from the bronchus into the tissues, though this is a rare accident. In case of bodies liable to exj)and or become friable by absorption of moisture, as dried beans, peas, maize and the like, every moment lost decreases the patient's chances. This does not justify hasty or ill-planned efforts without equipment ; but, as Emil Ma\er says, "Such a patient should be looked upon as constituting an emergency case to be operated upon at once." Solid bodies that by their shape are apt to occlude a bronchus, even though they do not swell, are to be operated upon at once, also, because of the serious effect of atelectasis and stagnation of secretion below the intruder, and, most important of all, because of the drawing downward of the foreign body by negative pressure which, with the swelling of the mucosa above as shown in Fig. 182, makes removal more and more difficult the longer the delay. The duration of a bronchoscopy. Endoscopists are now agreed that prolonged bronchoscopy in children is inadvisable and that a number of shorter sittings is safer. This has no reference to the ques- tion of subglottic edema which will be sei)arately considered. The author has frequently prolonged bronchoscopy to one hour's duration in children ; but as a rule, a half hour from the time the bronchoscope passes through the larynx, should be the limit except in exceptional in- stances, in a child under two years of age. Over two years of age, a bronchoscopy of an hour, without anesthesia, general or local, is prac- tically without risk. Drug shock, especially the paralyzing effect mor- phine and chloroform have on the respiratory center, renders a bronchos- copy of over fifteen minutes' duration hazardous. In an adult, the author has, in one instance, prolonged the bronchoscopy to three and a half hours, using a very little bit of cocaine solution a number of times, ap- plied only to the neighborhood of a foreign body in the bronchus. This matter of duration is so important, and is so greatly influenced by various factors, that it is quite necessary for bronchoscopists to re- cord the duration of their endoscopies in order to get data for a work- ing basis. The author has such a record for most of his cases. I'ORKICX BODIHS IX I.ARVNX AND TRACHEA. 251 The endoscopic appearances of foreign bodies in the air passages. Those who have never tried it may not realize that the endoscopic de- tection of a foreign body is, even when presented, not always easy to the inexperienced. Prolonged training will enable the experienced endo- scopist instantly to recognize any departure from the normal, even though the exact nature of the condition may not be at once realized. This is a valuable time-saving acquisition to be striven for. It must be re- m.embercd that, as is well known to all artists, color depends largely on the intensity, quality and direction of the illumination. Moreover, it is often not the true color of the foreign body itself that presents, but the foreign body as seen through a filmy coating of secretions which may be tinted with pus, blood or dissolved material from the foreign body itself. Therefore, the lube must be advanced slowly and carefully, all secretions being sponged away ahead of the tube-mouth so that the z^'all as well as the lumen can be carefully studied, not for the foreign body alone, but for evidences of traumatism or inflammatory lesions due to its presence. As stated above, the color of a foreign body as seen endo- scopically, varies with the degree of illumination. As a rule, however iron and steel bodies look black even after a few days' sojourn, no matter how highly polished they may have been when they entered. Xickel-plated objects, as a rule, do not tarnish so readily. Silver ob- jects turn black very quickly, just as steel and iron bodies do. Brass substances corrode quickly and soon look dark brown or black. The glint even of nickel-plated Ijodies is soon dulled by secretions, so that taking it all in all, the endoscopist will usually find all sorts of foreign bodies to be grey, or, more often, almost black in color, with the excep- tion of very recently aspirated brass, gold and bright copper substances, which may show for a few days in nearly their natural colors. As a rule, however, the bronchoscopist who is looking for a brightly shining, whit- ish glint will be deceived by the refraction of air bubbles and the spurs at the giving off of the different branch bronchi. As pointed out by Waggette (Bib. '>(u). it is necessary urgently to warn the beginner not to mistake the shar[), white, cartilaginous division between two branches for a foreign body. With a corroded steel or iron body, show- ing black, this is not likely t(j occur; but if the operator has in mind the bright silvery whiteness of the ordinary ])in, for instance, he is very apt to make such a mistake as Mr. Waggette warns against. As shown by U. i\. Patterson (Bib. l.'Sll), the natural color of a foreign body mav be such as to render its contrast with the surrounding mucosa so slight as to make j)rom])t recognition difficult. This is an important point to keep in mind. 252 FOREIGN BODIES IN LARYNX AND TRACHEA. Bronchoscopic finding of a foreign body in the traeheo-bronchial tree. Finding a large foreign body recently aspirated presents no espe- cial difficulties. One of long sojourn may be hidden by secondary pro- cesses ; and the problem then presented will be separately considered. Small foreign bodies are in some cases very difficult to find. Xot be- cause of any difficulty in seeing a minute object when such objects can be brought in line with the observer's eye, but because small foreign bodies may be located "around the corner" in a small branch bronchus, into which we do not directly look. When a small foreign body, such as a needle or a pin, has penetrated a small bronchus, there may be se- cretions emerging from the little bronchial branch that will betray the presence of the pin, but quite as often there is nothing in the way of local appearances to guide. Under such circumstances, the methods of localization referred to in a previous chapter should be used to limit the number of bronchi to be searched to a very few. In the absence of such means, it certainly is not justifiable to search every bronchus in the entire lobe, and still less is it justifiable to go with the forceps or probe into every bronchus. Having narrowed down the number of small bronchi to be searched to a few, each of the few orifices must be looked into in the manner shown in the schema Fig. 172. The bronchoscope, J;!, is introduced as far as possible into the inferior lobe bronchus and the endoscopist sees ahead the orifices of two or more branches, (D.) none of which, however, shows any evidence of invasion of the pin, which is below the level of the \isual axis, and is hidden by the intervening tissue, C. When we have reason to suspect such a condition of afi'airs from the radiographic localization, either by the radiograph with film overlay, or by radiograph with the bronchoscope in position, the tissue. C, must be pushed backward out of the way by the lip of the bronchoscope. In doing this, it is necessary to raise the head of the patient and in certain instances it will be necessary to raise the head and shoulders, the head being flexed forward on the thorax. In this position, the bronchoscope, as shown at ^I. will afl:'ord a view of the point of the pin (E.). The large amount of resiliency of the bronchial tissues permits of such manipulation without injury, provided the manip- ulations are gentle. It is very easy to rupture a bronchus by pushing the tube with too much pressure into a bronchus not sufficientlv large to admit the tube. Blind probing for exploration of bronchi suspected to contain the intruder is dangerous unless done with extreme caution. If any orifice seems at all suspicious the conical-ended bronchoscope (Fig. IS) may be used, or a closed, plain, straight forceps (Fig. 28) may be introduced carefully as a probe. If the intruder is felt the for- ceps jaws may be expanded and the foreign body seized, but great care FOREIGN HODIKS I.N I.ARVNX AND TRACHEA. 253 must be used. Under no circumstances should strong traction be made. In minute bronchi a foreign body is rarely firmly fixed because its distal part is necessarily small or it could not have entered. If a spur between two bronchial openings is grasped, slight traction will give an elastic sensation that can readily be recognized as quite different from the yielding of a foreign body that is free to move. Of course, a pin whose point is upward, as practically all are, may stick into the bron- chial wall, preventing withdrawal. This would give the same sensation of elasticity, which is due to the elastic mobility of the lung. This blind ! Hf:!'--; Fig. i~2. Schema illustrating the author's method of bringing into view a pin (A) located "around tlic corner," and hidden by the tissue (C) from the ob- server, who, in looking through the bronchoscope, B, sees only empty orifices (D). Ry raising the patient's head very high, the lip, L, of the bronchoscope displaces the tissue, C, permitting the ob.server to see the point of the pin as at E. The schema was drawn by the author after thus finding a pin in a small dorsal branch of the inferior lobe bronchus. He has used the principle many times since in branches diverging at various angles and twice in the upper-lobe bronchus. groping is dangerous. Particular care must be used not to mistake the grating sensation of the probing force])s sliding over the inner wall of the bronchoscope for the contact of a foreign body. Under no cir- cumstances is it justifiable to use toothed forceps for probing. When a pin is located so as to have its long axis corresponding to tlie long axis of the bronchoscope, the point of the pin presenting toward the o])erator. the i)in may be difficult to see. though as a rule there is movement enough to the whole tree to throw the pin at various angles so that it is only for a moment that the pin's axis exactly coincides with llie visual axis. I'sually als". the color of the pin is black from cor- 254 rOREIGX BODIES IX LARYNX AND TRACHEA. rosion. A very recently aspirated bright ])in may. however, be mistaken for a string of mucus or a division spur. Aluch more often, however, the reverse mistake is made ; the white line of a spur, or a thread of mucus is thought to be the foreign body, until the eye has become edu- cated to these illusions. It is a mistake to be constantly withdrawing and inserting the bron- choscope. The author in 208 cases of foreign body in the bronchus did not remove the bronchoscope in a single instance until entirely through with the bronchoscopy. This is not mentioned boastfullv but to correct the prevalent misunderstanding of the subject. The author cannot bring to mind any reason why. starting with a properly selected tube, the bronchoscope should be removed. It is a time-wasting procedure even if it does take but a few moments. If there should be any trouble with the light, the light carrier can be withdrawn ; but this should not be necessary more often than once in thirty or forty cases ; and not oftener than once an hour in any case. Properly illuminated, the life of a lamp is about 40 hours. The sponging away of secretions from the field keeps the lamp clean at the same time, as previously explained. Negative endoscopic findings in foreign body cases. Many cases come to the endoscopist erroneously believing that a foreign body has lodged in their anatomy. These cases may or may not need endoscopic search as herein elsewhere indicated ; but if searched it should be thor- oughly done. There is another class of negative cases, in which the foreign body has probably been present at some time or other. These recjuire very careful work. In the trachea and bronchi, evidence, in the form of local reaction, justifies the most careful and persistent search, because the chances are all in favor of the foreign body still being pres- ent, possibly hidden in swollen mucosa or in a closed-off bronchus, either of the same side or even on the other side. In other words, traumatism or reaction found in a bronchus indicates that the foreign body is pres- ent, but it does not necessarily localize it to the side on which the traumatism is seen, because of the well known tendency of foreign bodies that are free to knock in the air passages to be aspirated into the op- posite side. In all cases of doubt as to the localization of the foreign body we must do a bronchoscopy as well as an esophogoscopy, doing first the one indicated by the preponderance of evidence. Furthermore, in any case where all the data point almost conclusively to the foreign body being in the esopliagus or in the air passages, as the case may be, and failing to find it in the search of the one, we must then search the other before giving a positive opinion that a foreign body is not present, because none of our diagnostic means are absolutely reliable negatively. In the esophagus both pyriform sinuses and the sub-cricopharyngeal FOREIGN BODIES I.N LAKVNX AND TRACHEA. 255 space must be searched with a large tube or speculum. The possibility of sharp-pointed bodies having wandered out through the esophageal wall must be borne in mind. Such bodies usually are metallic and hence radiograph ically discoverable; but occasionally a rib bone of a fish w-ill thus wander and will not show. The author had one such case, also a case of a toothbrush bristle. In none of these was an esophagoscopy done. Mr. E. D. Davis reports the case of a boy with a pin that could not be found esophagoscopically, but which seemed, radiographically. to be in the retropharyngeal space. In conclusion we may say that no case can be considered to have been endoscopically explored unless the trachea, right and left, main, inferior and upper bronchi and the middle lobe bronchus (present on the right side only) shall have been examined, to the greatest depth reachable. Nor are wc ready to give a negative o[)iiiion then. The hypopharynx and esopliagus must be explored from the arytenoids to the stomach. This, however, must not be misconstrued into achising that thorough exploration must be completed at one seance. Inasnuich as we know that certain foreign bodies, such as small pins, may be present in the bronchi, as shown by the radiograph, and yet not be discoverable by bronchoscopy, how shall we be certain, in case of a foreign body not opaque to the ray, that it is not present on the strength of not being able to find it bronchosco])ically. If the foreign body is of such small size that it can enter a small lir(jnchus far out at the peri- j)hery. it is impossible to be certain. If, on the other hand, the history mentions a nonfriable foreign body of such size that it cannot enter a bronchus too small for a bronchoscope to follow it. we ma\' be certain, after a careful search, that it is not jjresent if not found. If the body is liable to be comminuted by maceration this does not hold absolutely true. ( )ne other point which will aid sometimes in deciding the question is that we may be able to state from the apix-arances of reaction around a small bronchus, that it probably contains a foreign body. This is only available, however, when there has been no previous bronchoscopy which could have caused irritation by probing that bronchus, and of course the error must be avoided of mistaking traumatism of a foreign body which had been coughed up for the traumatism of the reaction of a foreign body which is still present. Oral or tracheotomic bronchoscopy. Which/* Unfortunately the statement has crept into the literature that in infants or small children it is |)reUTabk' to do a tracheolomic bronchoscopy. In the opinion of the author this is due to twcj tilings: 1. The ignoring of the precautions mentioned under subglottic edema. 2. The fact that when this statement •Abstracted from the author's Rapport at the International Medical Congress, London, 1913. 256 FOREIGN BODIES IN LARVNX AND TRACHEA. was originally made, illumination was not in the relatively perfect condi- tion that is seen on the instruments of to-day. In making this state- ment, the author hopes he will not be misunderstood as referring to any difference between distal and proximal illumination. He means simply that the light on all forms of instruments to-day is far superior to what it was in the early days. At that time it made a great difference whether the tube was a long or a short one. To-da\ , it is questionable whether anyone can tell by looking through the lumen whether the tube is 30 cm. or 50 cm. The author has often tested this and found the ob- server unable to tell with a pair of concealed tubes which was the longer and which was the shorter, even though one was an 80 cm. gastroscope. Therefore, a short tube has no advantage so far as illumination is con- cerned. In regard to the manipulation of forceps, etc., an additional length of 10 to 11 cm. is of no advantage whatever. It is true that a somewhat larger tube can be used through a tracheotomic wound than through the glottis with safety to the subglottic structure, but Dr. Ellen J. Patterson and the author have found that a tube of 4 mm. internal diameter is amply large for delicate manipulations under the guidance of the eye, such as the placing of a hook through the eye of a shoe-but- ton in the bronchus of a child six months of age. If one is not accus- tomed to work through small tubes, doubtless it is better to do a tracheotomic bronchoscopy than to force a large tube through the larynx. In upper lobe bronchoscopy, almost as favorable an angle can be ob- tained by shifting the tube to the opposite corner of the mouth, as could be obtained by a tracheotomic bronchoscopy, provided the assist- ant holding the head, and the operator have worked years together so that they co-operate and the head of the patient is carried along with the tube to the extreme opposite position from the lobe to be explored. All of these things are readily demonstrated on the patient, but unfor- tunately the statements in the early literature have led men into hasty tracheotomy rather than to develop the necessary technic to work with exceedingly small tubes and to axoid damage to the subglottic area Out of 71 Hi bronchoscopies for all purposes, no one in the author's clinic has ever done a tracheotomy for the purpose of bronchoscopy. One tracheotomic bronchoscopy done by the author for a foreign body was in a case where the general surgeon had already done a tracheotomy for the compressive stenosis due to a goitre. In that case the author failed to find the foreign body, a small jiin. In one other case, also in his early work, he did a treacheotoniic bronchoscopy in a foreign body case tracheotomized for dyspnea. Both cases failed to convince the author that there is any advantage in the tracheotomic route. With these two exceptions, it has always been our custom to insert the bron- FOREIGN P.ODIF.S IX LARVXX AXD TRACHEA. 257 choscope through the inouth. even in the cases already tracheotomized for dyspnea. \'ery often i)atients come in with such severe dyspnea that it is unwise to leave them over night without a tracheotomy. In such cases, the absolute rule in tracheal surgery to do a tracheotomy always early, never late, is followed ; but in the first management of the case we have always found that a bronchoscope introduced through the mouth is much better for the temporary relief of dyspnea, insuffla- tion of oxygen, etc. In foreign body cases previously tracheotomized the bronchoscope introduced through the mouth we have found much more freely manipulated and much more satisfactory to work with be- cause the patient's head is very much less in the way, and all of the movements and manipulations are the usual ones in peroral endoscopy. The author hopes the foregoing will not be regarded as boasting. He feels sure that other endoscopists just simply have not tried oral bronchoscopy in infants, but have been misled by early statements based upon different conditions, and especially different instruments. The production of subglottic edema by oral bronchoscopy in children was due to faulty position, too large tubes and other preventable factors that will be considered in a later section. The preference of some op- erators for tracheotomic bronchoscopy has been due to the erroneous position of the head used in oral lironchoscopy. As elsewhere mentioned, the direction of the trachea is backward as well as downward. It fol- lows that a tube introduced through the anterior part of the neck will necessarily be of a great advantage compared tc a tube which is intro- duced through the mcjuth if the head of the patient is very low. If, on the other hand, the head ( recumbent 1 is very high, there is absolutely no advantage in direction in the tracheotomic route. The head has usually been held too low in oral bronchoscopy. Figure 1G3 illustrates the needlessness of tracheotomy so far as reaching a foreign body is concerned (it was necessary in this case for other reasons). The bronchoscope shown in the radiograph is passed through the mouth and shows the bronchoscope at a farther angle toward the periphery than was necessary to reach the pin. .A tracheotomy had been done by ihe previous operator in the hope that a tracheotomic bronchoscopy might succeed when he failed at an oral bronchoscopy. The author worked through the mouth only, and while he was equallv unsuccessful in finding the pin, the point here made is that so far as reaching a foreign body is concerned there is absolutely no advantage in angle by the tracheotomic route. The radiograpli was not made for the purpose I if denionstraliiin but as an aid to the working out of the problems in that [)articular case, llad demonstration been the object, the distal end of the bronchoscope coukl easily have been mo\ed out to the patient's 258 FORKIGN BODIES IN LARYNX AND TRACHEA. left beyond the heart shadow, there being absolutely nothing in the oral route to prevent such an angle. So far as any advantage in lateral movement is concerned, the error has been made of not realizing the wide range rendered available by the Boyce position. The range is shown schematically in Fig. lo.") and actually in the living patient in Figures l;Jii and 1115. Sharp foreign bodies, especially those with hooked extremities, or such as may retjuire a complicated procedure for re- moval, do not demand a traclieotomy, but simply more careful work. In the hands, however, of the endoscopically inexperienced, it is per- fectly justifiable in such cases to do a tracheotomy; and it should by all means be done in preference to rough and violent removal after an indiscriminate forceps seizure of the foreign body at any point that may present. Extremely large foreign bodies do not necessarily demand tracheotomic bronchoscopy. .Any intruder that has gone down through the glottis can be brought up the same way, if turned to the position of least resistance. Thymic tracheostenosis, thyroid anomaly, acute or chronic laryngeal stenosis and many other conditions may demand tracheotomy and the author would be the last one in the world to argue against its prompt and early performance. But in this chapter are pre- sented reasons wh)- it is needless for the passage of a bronchoscope. I ^ conclusion the author would strongly urge the bronchoscopist not to resort to tracheotomic bronchoscopy at the second trial. If the first bron- choscopy is not successful after fifteen or twenty minutes in a child it is better to desist, wait a few days and repeat the oral bronchoscojjy at least twice before resorting to the tracheotomic route. The author feels sure that a large number of the reported cases where the first bron- choscop)- was oral and the second, tracheotomic, the second broncho- scopy would have been just as successful if it also had been oral. On the other hand, the author regards tracheotomy as perfectly justifiable in any case in which the surgeon in charge deems tracheotomy for any reason whatsoever indicated for the best interests of the patient. In stating his personal views he recognizes the advisability of everyone de- ciding such ([uestions for himself, apropos of the particular case. COMPLICATIONS AND AFTF.R-F.FFlXTS OF BRONCHOSCOPY. After-care in endoscopic foreign-body cases. All foreign-body cases should have a special nurse night and day so that a careful watch may he maintained at all times. The possibility of the patient drowning in his own secretions, or of respiratory arrest, should be borne in mind and under no circumstances whatever should the ]iatient be permitted to leave the hospital before all danger of complications is over. In the majority of cases the patient could go home the same evening without KORKir.N liOniES IX LAKVNX AND TRACHKA. 259 injiirx' Init occasidiially ci implications may occur and it is better to he on the safe side. General reaction. There is in the majority of instances no gen- eral reaction followine; a hronchoscopy in a patient whose temperature, pulse and respiration are normal at the beginning. Occasionally there is a reaction to 100' F. The chart in such a case is reproduced in Fig. 17o. If, however, bronchopneumonia, septic pneumonia and other Fig. 17.^. Chart of a niaxinmtii reaction seen after bronchuscopic foreign body removal. Patient ncirnial as to temperature, jjiilse and respiration 1)efore oper- ation. acute conditions are present, we may have a severe reaction, though it is very rarely fatal. Lesser degrees of virulence of infective in- flammation present prior to bronchoscopy may produce only moderate reaction as shown in Fig. ITl, whicli is quite typical. Out of 'M cases of children in which the larvnx and trachea seemed to be jierfectly nor- mal, bin in which a loreign bodv was found in the l)r()ncbi, there was no reaction in any instance. Thi' leni])erature did not rise to lOO 260 FOREIGN BODIES IN LARYNX AND TRACHEA. in any but one case and the children seemed normal in every way as to breathing, appetite, and general condition. In one instance there w U W U) o * ^ *.o Fig. 174. Chart after lironchoscopic foreign body removal in a case in which there existed previously a moderately virulent infective tracheobronchitis. was a rise in temperature to 10;!. .\s there was in this instance no cough, no hoarsenes, marked respiratory rise nor other sign pointing to the air passages, but on the other hand gastro-intestinal disturbances, FOREICX BODIES IN LAKVNX AND TRACIIUA. 2(51 which were promptly relieved, followed by [irompt subsidence of the tem- perature elevation, Ur. I'rice concluded that the condition was one of gas- tro-enteric trouble and not a reaction from bronchoscopy. On the other hand, in another group of 2() cases, which, on first examination, were seen to have an intense laryngitis or tracheo-bronchitis, either from previous attempts at removal or from the foreign body being thrown about the interior of the air passages, there was a prompt reaction fol- lowing the bronchoscopy with a rise of from one to two degrees in the already elevated temperature. This rise and the reaction was most se- vere in the cases associated with copious pus formation. In three of these cases a peanut kernel was the offending substance, and this par- ticular foreign body seems to have a peculiarly irritating effect upon the mucosa of the lower air passages. From the foregoing statistics, as well as from the general recollections of clinical observations, the author feels justified in the following conclusions: 1. Bronchoscopy carefully done in children, without an anesthetic, general or local, is unassociated with any reaction worthy of consid- eration, provided the child beforehand is normal as to temperature, pulse, respiration and nearly so as to the local conditions in the laryn.x. trachea and bronchi, and provided the technic is strictly aseptic. 2. General systemic reaction including temperature elevation, ad- vance in pulse rate and respiratory frequency may be anticiijatcd in any case where the temperature is already above 100, and especially in such cases as have a severe local inflammatory condition in the larynx, trachea or bronchi. 3. The most severe reactions are due to absorption through abra- sions of the epithelium. These abrasions, when occurring from the for- eign body, cannot, of course, be avoided, but abrasions in bronchoscopy, except in exceedingly complicated removals, need not occur if great care be taken, not only in the performance of bronchoscopy, but also beforehand, to see that all of the instruments are free from roughness and sharp corners or angles. \'on Schrotter (Bib. 50.5) reports a rise of pulse to HO with rapid, irregular heart action but without dyspnea, due to the patient having swallowed a considerable amount of air during bronchoscopy, causing a dilatation of the stomach. The symptoms all subsided after a rest in bed. Shock. To the writer's knowledge no accurate experimental work has been done in regard to the degree of shock, if any, in bronchoscopy and esophagoscopy. Taking Crile's definition of surgical shock as a "low blood pressure." the author has never seen a single instance in any way approaching surgical shock, in a case where tliere had been no operati\c measures other lli;in the endoscopy. .A number of cases have 2f>2 FORF.rGN BOniES IN LARYNX AND TRACHKA. had severe fatigue ; especially noted in children after a prolonged bron- choscop\'. When the author first noted the interesting observations of Yandell Henderson on the acapneal hypothesis of shock, the author was surprised that nothing of the kind had ever been noted after bronchoscopy without anesthesia. Careful observation, however, revealed the fact that respiration far from being excessive is so much interfered with by spasm, cough, and holding the breath that it seems certain that there is a hypop- nea instead of a hyperpnea. This observation is not intended as applying in one way or the other to the theories as to the nature of surgical shock. They merely go to show that unless unduly prolonged there is nothing approaching surgical shock from a carefully done bronchoscopy or esoph- agoscopy when no traiuna is inflicted. There may be, and doubtless is in many cases, a drug shock. Sargnon reports a case where a tuber- culous pulmonary hemorrhage supervened preventing the bronchoscopic extraction of a pea, the patient dying twelve hours later. Pulmonary tuberculosis cannot be regarded as a contraindication to the removal of a foreign body and it w'as perfectly right and proper in this case to make the attempt. Undoubtedly the hemorrhage would have supervened any- way in a very short time so that such a case can hardly be regarded as strictly a death from bronchoscopy. Mosher reports central hemiplegia during bronchoscopy imder ether. Local reaction. Ordinarily the only local reaction noted is a slight laryngeal congestion producing slight hoarseness which disappears in a few days. If dyspnea, without pneumonia, supervene it is usually due to one of three things : 1. Drowning of the patient in his own secretions. 2. Laryngeal edema. •5. Subglottic edema. Impending drowning of the patient in his own secretions is a com- plication seen by the author in a number of cases. The subject has so many imjjortant bearings that it is separately considered under "Diseases of the Trachea and Bronchi."' Suffice it here to say that it is the first thing to be thought of in dyspneic cases and is (|uicklv relievable by the "sponge ])uniping" jjrocess. In a number of instances, the child has be- come dyspneic within 24 or ;!(! hours after the bronchoscopy, but on passing the bronchoscope, a large quantity of secretion was removed with complete re-establishment of quiet respiration and the disappearance of the dyspnea. It is especially to be anticipated in cases of peanut kernels and other secretion-producing foreign bodies. Edema of the supraglottic larynx sufficient to become obstructive is quite rare. The only case of the kind that re(|uired tracheotomy, in the author's experience, was in an elderly ]jatient with advanced nephritis rORKIGX BODIES IN LARYNX AND TRACHKA. 263 Subglottic edem-a. The causes of this complication in the author's opinion are : 1. The use of over-sized tubes. 2. Undue violence in insertion of the bronchoscope. •■^. Faulty position of the patient, the long axis of the trachea not being in line with the bronchoscope as the latter enters the trachea. 4. Faulty position of the patient after the bronchoscope is intro- duced resulting in undue pressure by making the larynx the fulcrum of the bronchoscopic lever instead of the upper thoracic aperture. .J. Trauma by extraction of the foreign body wrongly placed with reference to the long diameter of the glottis. Ci. Trauma in the application of local anesthetics through the glot- tis before the bronchoscope is introduced. 7. The anatomic ami physiologic nature of the subglottic tissue is a contributing cause. 8. Infective trauma li\- llie foreign l)ody itself prior to the bron- choscopy is uniloulitedly a coiUriluiting factor. \'on Eicken has re])orted a number of cases in which a subglottic edema i)resent before bronchosco])y increased after bronchoscopy so as to require tracheotomy. Logan Turm-r has scientifically determined that the development of inflammatory edema of the larynx is dependent upon three factors. 1. Tiie intensity of the inllammatory process producing it. 2. The site of the infection. .'!. The anatomic arrangement of the loose suljmucous cellular tissue of the larynx. The bearings of these observations upon subglottic edema after the sojourn of a foreign body in the subglottic region, or in the trachea where it is intermittently coughed upward toward the glottic chink and aspirated backward again, is self evident, but it is hoped that still further study by this eminent au- thority will llivdw further light upon the occurrence of subglottic edema without general laryngeal edema, after bronchoscopy, as reported by a number of authors. The author may be biased but he believes that the ]M-oduction of subglottic edema is lessened by distal illumination by permitting the use of very small tubes and by doing away with the heavy handle, thus per- mitting of the utmost delicacy, and. most important, the thick strong hcavv laryngosco]iic tube is not introdnced through the larynx. The thinnest lin'inings bronchoscoi)e at the laryngeal part of the tube during bronchoscopy is ■; mm. and this Ilriinings states "Cannot be used until the child is from I to ."i nv mills old." Conse(|uentlv in \ery young infants traciieotomy has to be resorted to because as llnniings states: "No re- liance can be jiiaced on the employment of tubes narrower than 7 milli- metres." Tills can only apply to proximally lighted tubes which re(|uire 2(34 FOREIGN BODIES IN LARYNX AND TRACHEA. not only a relatively large lumen for illuminating purposes but require a relatively thick and heavy laryngoscopic tube outside the bronchoscopic tube, because by this system the laryngoscopic tube itself is pushed through the glottis. By the author's method the bronchoscopic tube is too thin and light to be used to produce the displacement necessary to expose the glottis, and with distal illumination, a -i mm. tube is quite practical for anyone who will practice with it a while. The author has done a number of peroral bronchoscopies for diagnosis in suspected thy- mic pressure cases in new-born infants without any ill effects from the use of the 4 mm. distally illuminated tube. In the author's clinic, both Dr. Ellen J. Patterson and the author use tubes of 4 mm. and 5 mm. in- ternal diameter, for children under 6 years of age, the 4 mm. tube being for infants under one year. Our youngest patient from whom a foreign body was removed was an infant of 2^/^ months. This was a common pin removed from the right bronchus with a tube 4 mm. internal diameter. Since 1911, not one case of subglottic edema has occurred in the practice of either Dr. Ellen J. Patterson or the author in 3(5 successful removals of foreign bodies in the trachea and bronchi of infants under one year. Every case was done by oral bronchoscopy. This freedom from sub- glottic edema, we believe, is due to the use of small tubes, close atten- tion to the details of introduction and manipulation herein given ; and, especially to the aid of good assistants — in other words to "'team work." Stanton A. Friedberg in a recent case reports the use of a distally illum- inated •") mm. tube in an infant of 3 months, for the peroral bronchoscopic removal of a safety-pin from the right bronchus. Considering the nature of the foreign body this is one of the most remarkable cases recorded, and is the youngest patient from whom a safety-pin has been removed. Dr. Friedberg states, "What pleases me most is the facility with which an upper bronchoscopy was performed on such a young child." Killian, himself, recently has recognized the disadvantage in children of adding the bulk of the heavy laryngoscopic tube to the bronchoscopic tube in the larynx and has devised an excellent set of very small single tubes for children, (Fig. 173), to obviate the bulk of the double tube. These tubes Killian inserts with a mandrin and illuminates with a Kirstein headlight; though the tubes are also arranged to fit the Briinings or Kahler hand- lamp. Faulty direction of the tube on introducing may easily cause trauma by gouging into the subglottic wall, if the axis of the broncho- scope and that of the trachea do not coincide at the moment the tube passes the glottis. In ten different publications within the last two vears, the operators stated they placed the patient in the Rose position. If the patient actually was in the Rose position, he was just exactly rightly placed for the bronchoscope to gouge into the subglottic wall and to risk FOREIGN BODIES IN LARYNX AND TRACHEA. 2G5 a production of subglottic edema, especially if the head of the patient was a little more to one side than the other. Mention is made in the chai>- ter on introduction of the bronchoscope, of the necessity for, and method of, avoiding the use of the larynx as a fulcrum and the bronchoscope as a lever, because not only is the bronchoscopic freedom of movement thus hampered but the incidental trauma is a fruitful source of subglottic edema. The operator, who expects by means of heavy handles, and spe- cial leverage to get along with an illy trained assistant by dragging his patient around with his instrument until he can find the lumen he seeks, will have fre(juent subglottic edemas : and if he cannot improve the tech- nic he had better do a tracheotomic bronchoscopy in order to leave the larynx out of harm's way. P.ronchoscopy should be a gentle art. Treatment. When subglottic edema is present, the patient should be closely watched and secretions should be ])romi)tly removed, though if it is certain that the trouble is due solelv to the subglottic swelling, it would Fii,. 175. Killian's new tubes for children. What resemble.s an inner tube is really a mandrin for insertion, to obviate the use of the bulky double tube. They will lit the Briinings or Kahlcr handlani]) ; Init Killian uses the Kirstcin headlight. Six sizes are required. 4.5 mm. lor children 54 to 57 cm. body length. 5. mm. " " ;8 to 64 cm. " " 5.5 mm. " " (15 to 70 cm, " 6. mm. " " 71 to 85 cm. " 6.5 mm. " " 86 to 100 cm. " " 7. mm. " " loi to 120 cm. " " perhaps be better not to pass the brcjnchoscope for the removal of se- cretions, but to proceed to a .tracheotomy. Intubation should never be used, as it is not safe in these cases and is very likely to lead to an after stenosis. The same ma\' be said (jf a verv high tracheotomy in which the reaction around the cannula may result in a stenosis from perichondritis or cicatricial contraction which will re(|uire a long period of treatment for cure. When done for subglottic edema, the tracheotomy should be below the second ring of the trachea. The patient should be decaniuilated in a few days. Should the edema become chronic and prevent decannulation, direct galvano-cauterization as elsewhere herein explained, .should be done. The treatment of other complications arc within the province of the internist and pediatrist. CHAPTER XIV. Removal of Foreign Bodies from the Larynx. Syiii[