THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA LOS ANGELES GIFT Dr. 3mil Bocen Q= t" J 1, ( bl n Vr^ i !ll L_^ V ^WAtLNlVtK'VA ^LUVAiNI ^i £3^

i ^ ^^ 9 BSB!^^ '-4\)l ^^ - — -^^xs a ^ ;'TinK'\.'.vr\TH^ -7^/0 vr ^^Si^^^^SI i^^^ im 3Z5V0 u_ JX — 1 ^ s ';ai;\6^/ .'Lilt'^KA b b Thyroid Cartilage Crico-Thy oid Membran.3 - V- V\ and Artery. L_ \\ ; Cricoid Cartilaga— ^^h Superior Thyroid vein Infer, Thyroid V- Arteria imiorainat; A TREATISE ■ON — DIPHTHERIA Historically and Practically Considered; — INCLUDING — Croup. Tracheotomy and Intubation. By a. SANNE, Docteur en Medecine, Ancien des Hopiinux de Paris, Memhre de tu Societe Anatomigue, Des Societes de Medecine de Nancy, de Genhve, etc. Chevalier de la Legion d' Honneur. Translated, annotated AND THE SURGICAL ANATOMY ADDED; ILLUSTRATED WITH A FULL-PAGE COLORED LITHOGRAPH. AND MANY WOOD ENGRAVINGS. By henry z. gill, A.m., m. d., l l. d., Late Professor of Opera.fire and Clinical Snrgcry in the Medical Department of the Uniuersity of Wooster. at Cleveland. 0. ; Manber of the American Medical Association, Etc. St. Louis. Mo. : J. II. CHAMliERS & CO., 1887 COPYRIGHTED 1 887. By J. H. CHAMBERS. ALL RIGHTS RESERVED. mi TO PROFESSOR EDMUND ANDREWS, M.D., LL.D., AS A TRIBUTE OF RESPECT FOR HIS MORAL WORTH, LITERARY ATTAINMENTS,* AND DISTINGUISHED RANK IN THE MEDICAL PROFESSION, AND IN ACKNOWLEDGMENT OF PERSONAL FAVORS AND ENCOURAGEMENT IN THE PROSECUTION OF THE WORK, IS THIS TREATISE, IN ENGLISH DRESS, SINCERELY DEDICATED, BT HIS FRIEND, THE TRANSLATOR. INTRODUCTION. Since the period at which the immortal work of Bretonneau on diphtheria appeared numerous investigations have been made, and publications of great interest have issued from the press. The most celebrated, those 'which came from Trous- seau, have supplemented the description of the disease by ac- cessories which had escaped his predecessor. The labor of these two illustrious physicians has remained standing in its truly original portion — in that which concerns the doctrine of specificity. Their theories have undergone the test of time ; they have resisted powerful attacks, but now see returning to them a medical generation, shaken for a moment by specula- tions prematurely erected upon controvertible data. But the disease has continued its career, and has extended almost to the entire world ; its study has been pursued with perseverance ; new views have been enunciated, and certain important phenomena have been carefully examined if not fully explained. These elements, scattered through science, must be col- lected, classified, the approved acquisitions noted, the state of our knowledge upon points still in dispute set forth and, at the same time, must indicate the results of personal research, and, finally, present diphtheria in its complete entirety. I have undertaken"this task ; I have felt myself irresistibly attracted to it. For a long time my thoughts were directed in this channel ; being a student of Barthez and of Trousseau, two teachers who have contributed largely to the progress of this branch of pathology, I have been able to study diphtheria very closely. As early as 1869, I undertook to investigate a part of the subject, quite limited in appearance, that of the sequences of tracheotomy ; and we have seen by the develop- ments into which I have entered, what a conspicuous place it should occupy. The materials, so extensive, which I had barely touched, so to speak, at that time, offered me in pro- (5) VI INTRODUCTION. fusion the desirable resources. They have since been in- creased by an immense number of observations made by my- self at the Sainte Eugenie, or coming from my private prac- tice in the city; I have been able to add, also, notes taken of all the cases of diphtheria entering the service of Barthez, from 1869 to 1875, notes which this eminent teacher has placed at my disposal as he had already done those of the pe- riod from 1854 to 1869. The work which follows is, therefore, the substance of about fifteen hundred observations. Numer- ous facts, extracted from several theses and memoirs on diph- theria, have also been placed under contribution. I have en- deavored to make known the state of the question in France and abroad ; one will find a brief statement of the principal epidemics which have occurred in the old and in the new world, and the statistics will set forth the results of tracheot- omy in many of these countries. To have produced accurate accounts of the invading march of this plague in France, and of the track over which it has traversed annually, would have been very instructive. The reports of the committee on pre- vailing diseases, edited by E. Besnier, and the mortality tables published by the prefecture of the department of the Seine, have furnished me positive data of the course of the disease in Paris for some years past. The provinces have furnished me information much less definite ; the unfortunate interrup- tion which one observes in the reports of the epidemics pre- vents establishing complete statistics. I, therefore, join with authorized physicians who have demanded the reorganization of this service. I may not close without thanking MM. Barbosa, of Lisbon ; d'Espine, of Geneva ; Henriette and Warlomont, of Brussels, and Letourneau, of Florence, for the valuable documents which they have so kindly transmitted to me with equal promptness and liberality. A. SANNE. Paris, July, 1876. TRANSLATOR'S PREFACE. About eighteen years ago the question of the nature of diph- theria and of membranous croup — its oneness or duaUty — at- tracted my special attention and study. Having become ac- quainted with the German view from the personal instruction of Virchow, and then examining the subject as held by the French, and those two views so diametrically opposed as divid- ing the suffrages of the English and American authors and teachers, the subject grew upon my thought both in interest and extent. Was there no way of solving the problem — no way of reconciling the differences ? To adopt the views of the one class of observers was to reject the clinical facts, and teachings deduced therefrom, of the other equally competent and of equal experience. Having observed in discussions before medical societies the vagueness in many practising physicians as to the reasons for the use of certain remedies, as well as the positive dicta of others as to the difference between the membranous manifes- tations in the pharynx on the one hand and in the larynx oit the other, and especially in the only treatment in many casei (tracheotomy) which could possibly afford any chance of reliel or of hfe, I read everything regarded of high authority that 1 could command, either in German, French or English, which had for its object the investigation of the nature of the mem- branous diseases of the throat and air-passages. Very soon after its appearance in the original I imported Sanne's work. Its fullness, taking every feature of the subject under consider- ation, tracing its history down through the centuries, the clinical observations, the pathological manifestations, micro- scopical and clinical examination, and its inoculation — I con- fess the whole question grew in interest until it became almost a charm. At the same time, or a little before, operating on (7) VIU PREFACE. some cases for laryngeal obstruction (croup) with very encour- aging success, I set about investigating the status of the question, including the operation of tracheotomy, for the lar^mgeal form of the disease, in the entire state of Illinois, aiming to obtain the doctrines held, and the treatment, medical and surgical, adopted by the profession there, and to collect every case of tracheotomy that had ever been performed in the state for this disease (croup), with details of the operation. After most dili- gent investigation and extensive correspondence, continued until 1 88 1, the number of operations reported reached 151, of which 38 recovered — a number sufficiently large to encourage, certainly, the repetition of the practice in all suitable cases. In the above correspondence I was particularly impressed with the confused, limited and erroneous views held by many on the natui-e of, as well as the practise in, this very important disease. When we recall the fact that every year thousands die in the United States of diphtheria either with or without the laryn- geal complication (in 1880, according to the United States census, 38,398, or 52.32 to the 1,000 of all deaths with cause re- corded), it becomes every general practitioner to fully inform himself of the established facts of the disease, as well as of the questions still under investigation. A passage here from Prof. Jacobi's article in " Pepper's System of Medicine," will be in point : " It is a matter of regret that the limited space allotted to this subject should exclude much historical detail of the etiol- ogy, pathology and therapeutics of diphtheria. If history of any disease is interesting, and the neglect of its study has ever punished zVi'^//' [italics ours] it is diphtheria. Particularly would the treatment have been more successful if the knowledge of former times had been available and more heeded." In this volume, that regret may not arise, if the reader will have the industry to read, and exercise the intelligence to ana- lyze the material herein presented, both theory and practice, may we not confidently hope, will be greatly advanced, and in the result many lives be saved. I have used the metric sys- PREFACE. IX tern of weights and measures, not, however, omitting the one in more common use, though with the hope of aiding in the early general adoption of the former. The Arabic has, in both cases, been used rather than the Roman numerals. For this I make no apology. I had prepared a bibliography, chronologically arranged, of over thirty fools-cap pages, but upon farther considering the matter, it occurred to me that, for the general practitioner, it would be of little interest ; and because any one making an ex- tensive investigation of any of the questions connected with this subject would have access to " The Index-Catalogue of the Library of the Surgeon-General's Office," to be found in nearly all public libraries ; and for the farther reason that it seemed necessary to bring the limits of the work within some reasona- ble bounds. It is fitting and a pleasure to acknowledge the promptness and courtesy of my friends who have aided in various ways in carrying forward the work which, under the circumstances of delivering two annual courses of lectures on clinical and oper- ative surgery at the college, and acting as registrar and treas- urer, has been no easy task. Nothing short of the conviction of the intrinsic value of the work would have held me to its prosecution. The addition of the surgical anatomy of tracheotomy was an original thought with the translator ; and Prof. E. Andrews consented and prepared some matter for it. But an unforeseen and unavoidable delay occurred in the carrying out of the original plan; and the Professor, in the meantime, assumed other duties which made it, at a later date, impossible to complete the former purpose. Other arrangements had to be made. My friend, Dr. Lewis S. Pilcher, of Brooklyn, N. Y., most gen- erously placed at my disposal his article and the accompanying illustrations on the anatomy of the " Pretracheal Region." I have used much of it literally and liberally, and for it he has my warmest thanks. Dr. Harry K. Bell, of the " Sanitarian," very kindly prepared for me a " Report of the Mortality from Diphtheria and Croup X PREFACE. in the United States, during the year 1883," including nearly all the larger towns and cities, for the several weeks reported. But as, in many cases, several weeks were omitted, I could not use the report. I have, therefore, selected a number of the larger cities of the Union, and have given the mortality from diphtheria and croup for the years 1883 and 1884. This one table, if no other reason were given, would be justification for the publishing of the following pages. The translation has been made in the intervals of other work. It was very difficult to obtain assistance. Teachers of French do not always understand idiomatic English, and but few of those who do are familiar with medical language ; hence, it became necessary for me to reread and correct nearly all the work. Miss Annie B. Irish, Professor of the German Lang- uage and Literature in the University of Wooster, revised a portion of my first chapters, but distance and her engagements made it impracticable to further continue that assistance. Dr. L. B. Tuckerman kindly aided me in the latter part of the translation, other duties requiring so much of my time. Finally, the whole was reread by me with M. Lejeane, a Frenchman by birth and education. Did time permit, it would be a pleasure to read even again the entire volume, and in some cases to transpose, and to abbreviate in many cases ; but believing that the facts and sentiments are set forth in sufficiently clear terms to be understood it must now go to the reader, fully aware as we are that some mistakes may still be found. The author kindly gave me full permission to make the trans- lation, and has, since the first permit, also sent me his article on Diphtheria to be found in the Cyclopoedia Medical of a still later date of which I have availed myself I have added very recently some pages on hitubation, a pro- cedure now re-attracting the attention of the profession. In all over 50 pages have been added to the original work. Cleveland, O., Oct. i, 1886. TABLE OF CONTENTS. Frontispiece. Pseudo-Membranous Cast. Preface. Surgical Anatomy, - - - - - - - -- - i — 32 Introduction. Definition. History. Pathological Anatom/, -- -------52 FIRST CLASS. Primary Lesions of the False Membrane, ------ 53 Supports of the False Membrane, ---.----76 SECOND CLASS. Lesions of Apparatus, _...---.-- 81 Symptoms, -------------129 General Description of Diphtheria, - - - - - - i;,i — 188 Localizations of Diphtheria, ------- 1S9 — 264 Course. Duration. Termination, _-.-.-- 265 Recurrence. Diagnosis, -._ 267 Etiology, ----- 303 Epidemics, ----------- 304 — 358 Nature of Diphtheria --------- 359 — 374 Prognosis, ------------ 375 — 386 Treatment. ------------ 387 General Treatment, ---------- 457 Surgical Treatment, --------- 458 — 555 Sequences of Tracheotomy, ------- 536 — 635 Complications 574 Intubation of the Glottic, -------- 635 — 641 Prophylaxis, ----------- 652 — 656 LIST OF ILLUSTRATIONS. Fig. 2. Fig. 3- Fig. 4. Fig. 5- Fig. 6. Fig. 7- Fig. 8. Frontispiece, Membranous Cast from the Air-Passages. Fig. la. The vessels of the pretracheal space, natural size ; from a child of three years, 4 Fig. i^. The deep layer of the superficial fascia with the anterior jugular ve- nous plexus — typical arrangement, 5 Single median anterior vein, 6 Anterior jugular venous plexus, 6 Anterior jugular venous plexus, 6 The anterior cervical muscles, 8 The pretracheal space with typical arrangement of vessels and of thyroid gland, from nalure, 8 Larynx and trachea of child of six years, nataril size, isthmus ab- sent. Pyramid of Lalouette on left side. II Transvers'j anastomosing superior thyroid artery of large size; a'^- normal course of the crico- thyroid branch, 12 Fig. 9. Irregular course of the superior thyroid artery wijh anomalous sub- hyoid and crico-thyroid branches, 13 Figs. 10 — 11. Inferior thyroid venous plexus, 14 Figs. 12 — 13. Inferior thyroid venous plexus, 15 Fig. 14. Inferior thyroid venous plexus, 16 Fig. 15. Inferior thyroid veuous plexus, 17 Fig. 16. The pretracheal space. 20 Fig. 17. Innominate ariery crossing trachea transversely at a high point, 21 EiG. 18. The four great vessels arising separately from the arch of the aorta, 21 Fig. 19. The four great vessels arising separately from the arch of the aorta; the right subclavian and left carotid crossing in front of the of the trachea above the sternum, 22 Fig. 20. The four great vessels and the left vertebral arising separately from the arch of the aorta; right subclavian from left side of arch, passing behind others in front of trachea to its proper side, 22 Fig. 21. Carotids arising by a common median trunk between the origins of the subclavians, 23 Fig. 22. Carotids arising by a common trunk on right side, right subclavian from left side of arch, passing behind others in front of trachea to its prooer side, 23 Fig. 23. Right primitive carotid and subclavian arising separately from arch of aorta ; innominate on left side, 23 (12) LIST OF ILLUSTRATIONS CONTINUED. Xlll Fig. 24. Right subclavian arising from the arch of the aorta , both primitive carotids and the left subclavian by a common trunk on the left side, 23 Figs. 25 — 28. Anomalies in the arteries arising from the arch of the aorta, Figs. 29 — 34. C aliber of the larynx at different points, and at different ages, 32 Fig. 35. Dr. Packard's substitute for tracheotomy tube, 513 Fig. 36. Dr. L N. Himes' case of polypoid groA^th in the larynx, 614 Fig. 37. Dr. Hendrix's tracheotomy tube, 631. Figs. 38 — 40. Dr. O'Dwyer's instruments, A, B, C, D, for intubation. 636 Figs. 41 — 42. Dr. T. F. Rumbold's spray-producing instruments, 642 LIST OF AUTHORS AND WORKS REFERRED TO. Abeill*^. Acquapendente. Alaymo. Alexander. Albu. Allis. AndraL Andree, ^fi>in Annandale. Archaml-ault. Aretseus. Asclepiades. Aiibrun, Sr., Jr. Autenrieth. Avicenna. Ayers. Accetella. Adamson. Albers. Alibert. Albucasis. Amussat. Andre. Anger. Antyl us. Archer, Sr., Jr. Arron. Atlee. Aurelianus. Avenzoar. Axenftid. Babbington. Baillou. Baizeau. Balassa. Barbosa. Baron. Barry. Bartels. Barthez. Baudry. Baumbach. Bazin. Beau. Beaup. Becker. BecquereL Beherns. Bache. Bailly. Balzer. Barbeu. Bard. Barrier. Bartels, Max. Bartholin. Bastion. Baudelocque. Bayley. Beau, Verdeny. Beaupoil. Beclere. Behier. Bell. (14) LIST OF AUTHORS. XV Bellini. Bergius. Beringuir. Besnier. Bienfait. Bigelow. Binder. Bisnard. Bisson. Blache. Billroth. Blanclvt. Bland 1 1 . Bloom. Bogue, R. G. Boldyr . w. Bond. Bonley. Borden. Borsieri. Bousedo. Boudillat Bourdon. Bousuge. Bowman. Boeckel, E. W. Brassavolo Branco. Bridger. Briddon Brown, B. Broussais. Burgess. Burrow. Bergeron. Bernard, CI. Bernheim. Bichat. Biermer. Billard. Bischof. Bissel. Bitdeheim. Blachez, Blanchetiere. Blondeau. Broeck. Boeckel. Boinet. Boiling. Bonisson. Bonnet. Boruscut. Bouchut Boudet. Bouillon Lagrange. Bourgois. Bouvier. Braidwood. Brasch. Brenner. Bricheteau. Broncoli Brown-Sequard. Buchanan. Buhl. Burns. Buck. Cabot. Caillau. Calligari. Camlierlin. Carnevale. Carvalho. Cascalez. Casseri. Chantourelle. Charcot Chatard. Caldwell, C. P. Caillault. Calvet. Camuset. Caron. Casalds. Caspary. Chailly. Chapman. Chassaignac Chaussier. XVI LIST OF AUTHORS. Chavanne. Cheever. Cheyne. Cinni. Clemens. Coelius Aurelianus. Cohnheim. Colin. Colson. Corcelle. Cook. Costi has. Crawtord. Cruickshank. Daguillon. Damonette. Decker. De la Berge. Delacoux. Delthil. Demme. Deslandes. Ditzel. Double. Donders. Droste. Duch6. Duchenne. Duhomme. Dumontpallier. Durham. Duval. Diitersburg. Chedevergne. Chevalier. Chomel, Sr. Classen. Cleveland. Cohen. Colden, Cadwalader. Collin. Constantin. Cornil. Cortesio. Courty. Crequy. Curtis. D Damaschino. Daviot. Dehee. Delbert. Delens. Demarquay. Desault. Dickinson. D'Espine, Sr. Jr. Dobson. Dillie. Drysdale. Duchamp. Dufresse. Dujardin. Duplay. Durr. Dupuy. Easton. ^gineta, Paulus. Eisenschitz. Engstrom. Erb. Evans. Eberth. Eisenmann. Em pis. ^tius. Ebpine. Fabre. Faralli. Felix. Ferrand. Fagge. Fenger, Chr. Fenner. Fergeot. LIST OF AUTHORS. XVll Fehrmann. Figueiras. Fischer. Flammarion. Fock. Fontheim. Foncher. Formad. Foster. Fourgeaud. Foville. Frcebelius. Ferrier. Finaz. Fisher. Fleishmann. FoUin. Foglio. Forest, Peter. Foster. Fothergill. Fouris. Francisco. Fuller. Gairdner. Galentin. Garnier. Gavarret. Gendron. Gerlier. Germain. Gherli. Giacchi. Gibert. Gingiber. Gilette. Giron, Sales. Giurleo. Goltwald. Gosselin. Goupil. Green. Graefe. Gregory. Grove. Grandvilliers. Gubler. Guersant. Guinnier. Guyet Habicot. Hachler. Hallenius. Hallier. Manner. Harless. Galen. Garengeot. Gaupp. Gay. Gee. Gerdy. Germe. Ghisi. Gibbon. Gigot- Gigon. Giovanni. Girtanner. Goddard. Gombault. Gottstein, Gree. Greenhow. Graf. Grisolle. Griinberg. Grandboulogne. Guerard. Guillemaut. Gustin. H Hache. Hagner. Haller. Hamilton. Harder. Hatin. XVUl LIST OF AUTHORS. Haughton. Heister. Henle. Henroz. Henoch. Heral. Herard. Herrera. Herville. Ilewson. Hillier. Hilton. Hirsch. Hoffmann. Home. Holmes. Howse. Hufeland. Hiillmann. Huxham. Hayem. Hemey. Hendrick. Hendrix. Henriques. Henriette. Heredia. Hervieux. Herpin. Heslop. Hippocrates. Hodge. Holden. Homolle. Hueter. Hunt, E. M. Hulke. Hutchinson. Huttenbrenner. Ingals, E. F. Isnard Isambert Jaccoud. Jacobi, A. Jenner. Johnson. Juan do Soto. Jugand. Keen. Klaproth. Klee. Kohnemann. Korturn. Krackowitzer. Kiichenmeister. Jackson, V. Jaffa, Max. Jodin. Johnson, H. A. J urine. K KeeteL Klebs. Kieser. Korting. Kraft-Ebing. Krishaber. Kiihn. Labadie Lagrave. Laboulbene. Labat Lacaze. Laignez. Lallemand. Landeau. Labric. La Board. Laennec. Lallement. Lancereaux. Lange. LIST OF AUTHORS. XIX Langenbeck. Larue. Latour. Lauton. Layaut6. Ledran. Le Fort LegrOiX. Lespine. Letourneau. Lepine. Lepois. Leyden. Lionville. Loffler. Lorain. Louis. Lusitanus. McKenzie. Magne. Mair. Malichecq. Malouin. Marjolin. Marmisse. Marsb. Martin. Maunoir. Meigs. Menezes. Mesue. Michon. Millar. Minor. MiqueL Molloy. Morath. Morax. Monneret Monckton. Mounert. Muron. Napier. Nekton. Langbans. Lasegue. Laugier. Lavergne. Lecorche. Lee, E. W. Legros. Lemaire. Lespiau. Letzerich. Levis. Lewin. Lincoln. Littre. Loiseau. Loreau. Lunin. Liitz. M Malavicini. Maingault. Malgaigne. Maissonneuve. Rtaisord. Marchal. Marotte. Marteau de Grandvilliers. Maugin. Mazotto. Mellvain. Mercado. Michaelis. Middleton. Millard. Minowsky. Molendzinski. Mollereau. Moreau. Moriseau. Mortlake. Moiiremans. Moynier. Muller, Max. N NasilofF. Neubauer. XX LIST OF AUTHORS. Neumann. Niemeyer. Nola. Nunez. O'Dwyer, J. Oertel. Oppolzer. Ormerod. Oulmount Newcourt. NiveU Nonat- o Oelschlager. Onimus. Orillard. Otrobon. Ozanam. Packard. Paget. Pantaire. Parise. Paterson. Pean. Pelvet P6rat6. Perchant Perrin. Peter. Philippeaux. Picard. Pilcher, L. S. Pletzer. Polan. Prentis. Prosimi. Quinquaud. Raciborsky. Radcliff. Ranse. Ranvier. Rapin. Ravn. Raynaud. Rechou. Regnard. Reiffer. Reveil. Ridard. RillieL Page. Pancoast Parker, R. W. Parrot. Passavant. Pelletier de Chanbure. Pepper. Perier. Perron. Petit. Physick. Picot. Pinel. Plouviez. Potain. PouUet. Pouquet Prosper Faucher. Q R Racle. Ranney, S. W. Ransom. Rapp. Raser. Rayer. Reboullet Regate. Reil. Revilliout Richardson. Richardson, J. R, \ Rindfleisch. Robert Robinson. Rodrigues. RokitanskL Rosati. Rosenthal. Rothe. Rouziez-Joly. Rudberg. Rumsey. Ruysch. •LIST OF AUTHORS. Rippley, J, H. Robin. Roche. Roger. Rollo. Rosen. Roser. Roux. Royer Collard. Rumbold, T. F, Rush, Benj. XXI Sebatier. Saint Laurent Santy. S6e. Schobacher. Schrotter. Schiitz. Scoutetten. Seeligmiiller. Senator. Senf. Severinus. Signini. Smith, Henry. Smith. Solomon. Starr. Steiner. Stephenson. Stoeber. Stoll. Strong, A. B. Sylva. Symwrhid. Saint Germain. Santorio. Satterthwaite. See, Germain. Schlier. Schmidt. Schulz. Schwilgu6. Sebastien. Sellerier. Sendler. Serlo. Sgambati. Simon, Jules. Smith, H. H. Soglia. Soule. Squire. Stelzner. Steudener. Steppuhn. Stokes. Stolz. Tait. Tavignot. Teixeira. Thomas. Thompson. Tiedemann. Tilld. Tobanon. Tamajo. 'J'ardieu. Tenderini. Thore. Thomson. Tillaux. Titanus. Tommasi. XXll LIST OF AUTHORS. Toulmouche. Traube. Trousseau. Uhde. Ullersperger, Townsend. Trideau. Tuefferd. u Uhlenburg. Underwood. Vallantine. Valerani. Van Capelle. Velpeau. Vicq d' Azyr. Vidal. Villreal. Vogel. Vulpian. Voss. Wade- Wagner, E. Warimann. Warmont Weber, H. Wedel. Werner. iVhalbom. Wiedash. Wilson. Winkler. Wreden. Wynne. Valleix. Van Bergen. Van K5pl. Verneuil. Vieuseux. Vigla. Virchow. Voltolini. Von Roth. w Wadel. Waldeyer. Warlomont. Waxham, F. E. Wecker. Weirus, John. West. Wichmann. Wiederhoier. Wilke. Wood. Wundeilich. Zenker. Zorgo. Zobel. Zurkowski. INDEX. Abscess, . 83, 289. 576, 647 Anoesthetics, • 517 Acids, . . . .70 Angina, 34, 74, 149, 416 acetic, . . 71, 431 benign. 437 boracic, . . . 435 croupal. 35 carbolic, . . 410, 433 explosive. 199 chromic, . . 70 gangrenous. 54, 194 citric, . . 71, 431 maligna, 35, 199, 437-8 gallic, . . . 409 pestilential. 38 hydrochloric, . 70,417 Anorexia, 212 1 lactic, . . 71,431,438 Antimony, sulph., 40s ' nitric, . . 70,417 tartrate, . 395 oxalic, . . 410, 425 Antiphlogistics, . • 389 salicylic, . 410, 4", 435 Antispasmodics, 453 sulphuric, . . 70, 417 Antiseptics, 407,411,432 Adenitis, . . .81, 82, 644 Apomorphia, 450, 455 Age, . . . 350,377,445 Aphonia, 172 Air, in veins, death from, . . 26 Aphthae, 279, 298, 399 Albuminuria, 50, 124, 140, et. seq., 200 Apparatus, see Diphtheria. 212, 294 Asphyxia, 496-98, 537 Alcohol, 70,411-13,425,439,543,649 Aspirator tube, . 514, 550 Alimentation, . . 8, 412, 571 Astringents, 424 Alum, . 73, 392, 419, 424, 438 Atomizing, 444 Ammonia, . . 427, 444 Auscultation, 500-2 Anatomy, surgical, . i et seq. Autopsy, 113 Bacillus, 373-4 Bacteria, . 57,66 Balsamics, . 37-8, 51, 392 Beaty, David E., Jr., 612 Bite, causing diphth. . . 337 Bladder, . 124, 166 Bleeding in diphth.. 389 Blisters, 369, 390, 440, 649 Blood in diphth.. 41, 115, 121,390 Borax, . . . 424 Bromate of potass., . . 427 Bromide of potass., . 72,427,438 Bromine, 39, 70, 80, 406, 426, 432, 438, 445, 449, 454 Bronchitis in children, . 231, 243 capillary, . . . 290 pseudo-membranous, . 642-4 Broncho-pneumonia, 92-8, 232, 234, 502 (23) XXIV INDEX. Calomel, . 73. 391 Constipation, 212 Cartilage, cricoid, see Anatomy. Constitution, medical e, • 375 thyroid, 27 Contagion, 325 Catarrh, 283 Contro-stimulants, 5o> 435 laryngitis. . Convulsions, 161,620 pneumonia. 403 Copaiba, 401 Cause, see Etiology Copper, sulph.. 418 Catheterization ol larynx, 446-8, 454, 635 Corium, lesions of, 59. 75 Cauterization, 75, 365,417-423,449.454 Corrosive sublimate. 406 Children, 33, 38, 39 Coryza, 203, 241, 295, 641 Chinolin, 406 Croup, 439 Chloral, 433-34 and diphtheria, identity, . 48 Chlorate, see Potass, and Sodium. cure in. 497 Chorine water, 400 diphtheritic, 48, 62, 291, 363-s Cicatrization, • 593 duration of, 76, 221, 225 premature, 594 forms of, 217, 221 Climate, . 320 membrane, 305 Clots in heart, III, 116 paroxysms in, 497 Coal tar. • 443 periods of. 204-8,225,451-4 Coffee, . 413. 437-8 primary, 201 Cold, . 414 secondary, 504 Cold cream, . 580 symptoms, 203-9, 230 Collapse, 438 treatment, 497. 573 Collodion, 554, 562 Cubebs, 401, 402 Complications, . 226, 230-8, 621, 646 Cyanosis, 501 Conjunctivitis, see I iphtheria. D Deaths among physicians. 327 Degeneration, amyloic i, 123 fatty. 127 Diarrhoea, 151 Diphtheria: definition, . . 33 et seq., 52 diagnosis. . 268 et seq. etiology. 303 in tracheotomy, . 590 ofanusj 40, 57, 85. 172, 258, 300 of bladder, 124 of connective tissue. 83 of ear, 53, 128 251, 297, 644 of eye. . 57, 127 167. 171 247, 296, 644 of fauces. 39, 416 of glands. 81-2, 198, 644 Diphtheria 0/ apparatus, nervous, 125 skin, . . . 261 German view of, 47, 58, 59, 360, 363 a parasitic disease, . 66, 372 a specific disease, 47, 51. 359, 369, 370 conditions favoring, . 349 conditions unfavorable to, 353 contagiousness of, 39, 326, 367 course of, . . 265 duration of, . . 265, 624 following other diseases, 354 forms of, 62, 131, 1F9, 387 fungus in, 64, 372-4 gangrene in, 77, 80-1 incubation of. 355 nature of. 359 INDEX. XXV of intestines, . 85, 258 of larynx, 282 of liver, . 86 of lungs, . • 94 of mouth, 83, 253-7, 297, 646 of nose, 39, 41,86, I 29, 203, , 206, 295 symptoms. • 129, 192 synonyms of, . 33 of apparatus : circulatory, . no digestive, 83, 253, 647 genito-urinary. . 124, 259 glandular. 81 -2; , 198, 644 locomotor. 128 primary, . 78, 130 secondary, 78, 185-8, 353 termination of. . 265 transmission of. 325-6 typhoid, • . 8s without diphtheria, 62, 175, 282, 369 Diphtherite, . . 45-7, 37 1 Diphtheroid, . . 37° Drinks, . . . 416 Dropsy, . . . I44 Dull knife, ... 9 Dysphagia, . • . I97 Dyspnoea, . . 35,213-16 E Ear, see Diphtheria. Ecchemosis, . . . 164 Electricity, . . 166, 181-2 Emboli, . . . 106 Emetics, . 390-8, 435, 449, 452 Emigration of blood globules, 61-7, 73 Emphysema, . 105, 236, 550-4 Endemics, . 303 et seq., 380-2 influence of other, . 324 Endo-carditis, . . 156 et seq. Endocardium, . . 113 Entrance of infectious material into the system, mode of, see Trans- mission. Epidemics, . 36-49, 304-324 Epidemics, influence of other, 324 Epiglottis, Epistaxis, . . . 154"^ Epithelium, transformation of, 58-69 Eruptions, 40-1, 148 et seq., 212 Erysipelas in tracheotomy, . 581 Eschar, . . . 56,67-8 Etiology, ... 303 Eustachian tube, . . S3, 253 Expectorants, . • 4^4 Experiments, Curtis and S., Wood and Formad, . 339-41 Extravasation of blood, . 83 Exudates, . . . 72,403 Eye, see Diphtheria. False Membranes : adherence of, characteristics of, chemical characteristics of, color, . . 41 destruction of, detachment of, dimensions of, . expelled, extension of, exudative nature of, forms of, 41, 53, 62, 131, I { from bronchi, False membranes, from larynx, 57 S4 nature of, . . . 67 45-78 prevention of, . . 389 45-9, putrefaction of, . . 363 69, 70 structure and seat of, . 52-77 I 53-55 theories of, . . 58-62 388 False principle, . • • 75 76 Fascia, . . . 5-10 . 53 Fauces, . . . . ^4 35 Fever, . . 209,415,495 74-5 Fibrin, exudation of, . 61-9, 78 67 Food, see Alimentation. I9, 387 Fumigation, . . 440, 443 57 XXVI INDEX. Gangjrene, 42, 56, 77-9, 81-3, 108, 152 Gland, thyroid, isthmus, 2,9-11,18,21,527 et seq., . . 171, 582 623 lymphatic. , 81 Gargles, . . 416,423-4, 435 suppuration of. 647 Geni to-urinary organs, see Diphtheria. Glottis, diameters of. 32 Genius epidemicus. 375 intubation of, . 446, 635 Germs, 354 Glycerine, • 70, 423 German views, see Diphtheria. Goat, operation on, , 459 Gland, thymus, . . 2, 19 Grog, • 439 H Haemorrhage, 154, 197, 199, 623, 647 Heart, clots in. . 117 fatal, ... 22 Hemiplegia, • • 166 into trachea, . . .18 Herpes labialis, . 2S0 in tracheotomy, 18, 29, 30, 155, 537 Herpetic pharynpi -, 279, :62 Haemostatics, . . 533, 543 Hospital gangrenj. . 370 forceps of Pean, . 515,542 Hygiene, defecti\ , 349, 570 Hearing, . . . 168 Hyoid bone. . 27 Heart, . . . 112,165 Hyperinosis, 121, 145 Ice, . . . 408, 415-16 Identity of all forms of diphtheria, 68 Illumination, . . . 516 Impotence, . . . 166 Incubation, . . 315, 355-8 Indications for treatment, . 387 Infection, . • 359, 363, 37° deaths from in physicians, 327 Inflation tube, . . 550-3 Inhalations, . . . 443 Injections, . . . 445 Inoculability, . . 326 et seq. Inoculability, accidental. • 331-3 by false membranes, 337 Insufflation, . 423-5, 440 Intelligence, . 169 Intestines, . . 85,258 Intubation, . 446, 635 Iodine, 70, 401, 410, 441 Ipecac, . 450 Iron, 414 perchloride of. 7 :, 406-7, 418 Irrigation, . • 438 Isolation, • 652 Jaborandi, Jews, 405 Jugular veins, 33 16 K Kermes mineral. Kidneys, 405 122, 145-6 Kidneys, loops of Henle, 123 INDEX. XXVll Labarraque's sol. 409-14, 433 Leeches, . . . 390 Lactic acid, see Acid. Lemon juice, . . . 430 Landmarks, suigical, I Leptothrix buccalis, . . 66 Laryngeal diphtheria. 282 Lesions, primary, secuiula.y, . 52 lesions. 625-6 Leucocytes, ... 78 Laryngitis, . 283 Light, .... 516 Laryngocentesis, 459 Lime, saccharate, . . 428 Laryngoscope, . 609 water, 399, 427, 438, 444-5, 454 Laryngotomy, 34, 460 " Line of safety," . . 3, 26 Laryngo-tracheotoni) , 10, 29 Listerine, . . . 435 Larynx, 27, 87, 170 Localization, . 315, 376, 416 foreign bodies in. . 289 Locomotor ataxia, . . 303 intubation of. • 635-40 Lymphatics, . . .81 M Malignant pustule, . . 361 Martyrology, . . . 327 Measles, 185, 238, 254, 495, 504 Mediastinum, . . 109 Medulla, . . . 169 Membrane, see False Membrane. mucous, . . -77 serous, ... 62 Mercury, Mercury, salts of, Micro-organisms, Milk, Morbus strangulatorius, Mortality, see Statisiics Mortification, Motility, Mucin, . 319, 406, 432, 442 Muguet, N 73 51, 57, 64-6 408 38 So 163, 166 69, 76 279 Necrosis, . . .67, 76 Nephritis (see also Kidneys), 58 Nervous system, see Paralysis, and Diphtheria of apparatus. Neurin, . . . 644 Nitrate of silver, . . 73 Nurses, trained, see Tracheotomy. Nutrition, see Alimentation. CEdema, glottidis, pulmonary, CEsophagus, 109, 124, 144, 156 82, 88, 92, 241, 286 237 Ontology, Origin, Oxalic acid, see Acii 75. 84, 554 Oysters, 407 303 412 Palate, . 37-9, 79, 84, 161, 179 Papayotin (papaine), . . 644 Paralysis, 37-9, 40-3, 51, 89, 126, 16), 161 et seq., . Parasites, see Micro-organisms. 302, 650 Pharyngitis, herpetic. 279, 362 Pilcher, Dr. L. S., 504 Pilocarpine, . Plasma, 120 Pleurisy, . 103, 236 XXVUl INDEX. Paresis, see Paralysis. Pathological, see Anatomy. physiology, Penis, Pepsin, . . . . Pericardium, Pharyngitis, 175, 189, 272 et seq benign, diphtheritic, duration of, 73. 213 124 112 366 190 193,272 197 Pneumonia, broncho-, 92, 232, 502 croupal, 58, lOl, 403, 503, 622, 649 pleuro- Polypus of larynx, Position of patient. Prevention, Prize, Prognosis, Prophylaxis. 104 613 515.650 . 239, 652 44, 397. 460 . 375.377 239, 652-6 Quinine, 412,437-8,455 R Railroads, 320 Resorcine, Rectum, 165 Respiration, Recurrence (recedive). 265, 377 Rete mucosum, Relapse, 315 Rhinoscopic, Remedies, numerous, 4" Rubeola, 406 • 244 . 81 206, 295 80 Salicylic acid, see Acid. Salivation, . . 292, 392 Scarlatina, 124, 144, 149, 186-8, 239, 354, 377. 495. 504 Scoutteten, . . 481,448 Season, . . 316, 320-1, 378 Self limitation, ."-enega, . . • 404 Sensation, . . . 167 Sepia blood, see Blood. Sequelae, . . • 240, 379 Sex, . . . 351.377.492 Spasm, . . . .161 Skin, diphtheria of, . . 646 Skin, mobility of in tracheotomy, 4, 5 Small-pox, . . . 504 Smell, . - . .168 Sodium, benzoate, bi-carbonate, . 3934, 427 chlorate of, . . 72, 426, 430 chloride of, . . 73 hypobromite, . . 73 Soda, caustic, . . 418 Spasm of glottis, of larynx, Speech, . Specifics, Spray, Statistics, . Steam, Sternutatories, . 289, 617 421, 428 . 168 50,411,416,443 . 445, 642 380, et seq., 456, et seq. . 441 452 Stimulants, see Alcohol, Stomach, . . 85-6, 15 1-7 Stomatitis, . 84, 257, 298, 392, 429 Strabismus, ... 39 Stricture, of larynx, of pharynx, of trachea. Strychnia, Suffocation, Sulphur, Sulphites, Swabbing of larynx, Symptoms, Syncope, Syphilis, . 82 82 . 93, 607-8 • 35. 47 407, 424, 438 410 443 129, 192, 201 537 33^> 377 INDEX. T Table, operating, 515 Tannin, . . 424,438,454 Tartar emetic, • 395.449 Taste, . 168 Teeth, • 35, 392 Temperature, 209-11, 502, 571 Temperament, • 352,378 Thermo-cautery, 30 Throat, 416 Thrombosis, 116 etseq., 158 Tirage, 206 Tonics, 413, 439, 455 Tongue, 84 Tonsillitis, 273, 422 Trachea, see also Surg. Anatomy, 90 aspirator, . . 550 collapse of walls of . . 563 diameters of, . . 31, 32 fistula of, . . .619 impertect incisions of, . 544-7 movements of, . . 2, 27 polypus of, • . 93, 608-16 retraction of, . . 29 rings of, . 12, 29, 92, 489 ulceration of, . 51, 91-3, 601-7 Tracheotomy, .... 34, 38, 42, 47, 50, 451. 458, et seq., 638 age, . . 481, 488-92 accidents of, . 497, 525, 537, 547. 555. 575. et seq. after-treatment of, . . 557 bloodless, . . 30 causes which influence the results of, . . . 487 causes which prevent, 568, 624-34 dangers and difficulties in, i, 2, 19, 26, 30, 489, 497-8, 525, 544-7, 551; day-light for, . 500, 516 XXIX dilators in, . . 508, 513 dressing after, 5i3-'4. 525, 5^0 early operation, . 495 eruptive fevers, . • 495 final removal of cannula in, 565, et seq. gangrene in, . 582, 623 hemorrhage in and treatment of, 537-44,621 indications for, and contra-, 495-506 in extremis, . . 496-8 land-marks in, . I, 2, 528-30 measles, . . 495» 5°4 methods, "high, low, crico-trache- otomy," . . 519, et seq. period for, . . 495"9 pioneers of, . . 460 previous health, . . 492 " treatment, . 494 preparation for, . 506-13 process, slow, and rapid, 527-34 season of year, . . 494 sequelae of, . . 556 statistics of, 50 et seq ,471 et seq. steps of, . . . 520 temperament, . • 493 tenaculum, use of in, . 528-30 thermic, . . 534-37 tubes, . 32. 5 »o, 513, 634 without dilators, . 508, 513 " tubes, . . 513 Transmission ol diphtheria, . . 325-6, 345, et seq. Treatment of diptheria, 387, 416, 573 period for, . . 451 Tubercle, cricoid, . 528-30 Tuberculosis, 187, 303, 377, 505 Turpentine, . . 406, 443 Typhoid fever, . . 377,405 u Urine, 183-4, 195 Ulceration, 35, 77-80, 88, 92, 579, 601 XXX INDEX. V Vibrios, . . • 57 variations of, . . 2-17 Veins, plexus of in neck, . 1-16 Vichy water, . , 392, 427 innominate, . . 21 Vomiting, . . 152,212 thyroid, . . .13 Ventilation, • . -571 Whooping cough, 186-7, 240. S04 Wine, . . 413, 437-8 z Zinc, sulph., • • 45° Zymotic, ... 51 SUMMARY OF A REPORT OF A CAST. BY DR. H. GRAFF, OF EAU CLAIRE, WISCONSIN. [Ill stration opposite Frontispiece.] Case. A girl aged i6 years was taken sick on October lO, 1883. The doctor was called October 14. Found the patient with fever and pain in the throat, and considerable swelling about the neck. Both tonsils were covered with a greyish membrane. Diagnosis : Diphtheria, of which there was a "violent epidemic" prevailing in the locality. On the 15th, condition about the same. On i6th, the doctor was called early and found the patient suffering most "violent dyspnoea and slight asphyxia." This condition had been growing worse during the night. At noon when making his next visit he found the patient sleeping, her respiration almost normal, and the surface bathed with perspiration. He had at the last visit given her 0.04 (Ys gr.) of sulphide of calcium. About an hour after the previous visit the patient had occasion to get up and was siezed with a violent paroxysm of coughing, and after ex- treme efforts she shot up a "white rag" which the mother showed him in the spitoon. This ivhite rag — the false mem- brane — the doctor took to the office, and on examination it was found to be a complete cast of the trachea and bronchial tubes down to the smaller ramifications, and all in one piece. See frontispiece. A photograph was taken of it while fresh, and then the specimen was dried and varnished. The doctor has it in his possession. The relief was of short duration ; after about eight hours dyspnoea returned, and she gradually grew worse until she died, at 9 o'clock the next morning. No post mor- tem examination could be obtained. How much this is like the first case/eported by Dr. Stephenson, of Leesville, O., only a more perfect specimen (p. 305). Also the case reported by Marteau de Grandvilliers more than a century ago ; as well as cases described by the early writers, as Galen, who saw a pa- tient expel a thick viscid membrane supposed to be the epi- glottis. [SURGICAL ANATOMY OF THE PRE -TRACHEAL REGION WITH SPECIAL REFERENCE TO TRACHEOTOMY IN CHILDREN. Without desiring to magnify the difficulties which may be met with in the operation of opening the trachea for the reHef of dyspnoea in croup, but with a purpose to give them their true weight and to aid in recommending measures by which they may be avoided or surmounted, I have deemed it not un- important to add to what^has been said by the author, even at the risk of repetition, some remarks and illustrations which may be of service (at least to beginners) in this operation. Having heard remarks from those who may have operated once or twice or, at most, but a few times, indicating their opinion of the operation for croup, even in quite young chil- dren, as being rather a simple operation and not dangerous, I feel bound to say that, in my opinion, it is one of the most un- pleasant, if not dangerous, as met with binder the usual circum- stances, of all the operations which the surgeon is called upon to perform. In other words, I entirely agree with Dr. John H. Ripley, of New York, that there are probably more patients die on the table in or after the operation of tracheotomy for croup than in any other established operation in surgery. I would myself prefer to amputate at the hip-joint, or perform ovariotomy ; though I have never refused the operation, but, under proper circumstances, always urge it. A few sections (25, 26 and 27) from Holden's excellent work on " Land-Marks, Medical and Surgical," will here be inserted : 25. Cricoid Cartilage. — The projection of the cricoid carti- lage is a point of great interest to the surgeon, because it is his chief guide in opening the air passages, and can always be felt even in infants, however young or fat. [In some cases I have found it very obscure indeed]. It corresponds to the interval (I) 2 DIPHTHERIA, CROUP AND TRACHEOTOMY. between the fifth and sixth cervical vertebrae. The commence- ment of the oesophagus Hes behind it ; here, therefore, a for- eign substance too large to be swallowed would probably lodge, and might be felt externally. Again, a transverse line drawn from the cricoid cartilage horizontally across the neck would pass over the spot where the omo-hyoid crosses the common carotid. Just above this spot is the most convenient place for tying the artery. 26. Those who have not directed their attention to the sub- ject are hardly aware what a little distance there is between the cricoid cartilage and the upper part of the sternum. In a person of the average height, sitting with the neck in an easy position, the distance is barely one inch and a half. When the neck is well stretched, about three-quarters of an inch more is gained [1V2+V4 in. =2^/4]. Thus, we have (generally) not more than seven or eight rings of the trachea above the stern- um. None of these rings can be felt externally. The second, third and fourth are covered by the isthmus of the thyroid gland. The trachea, it should be remembered, recedes from the surface more and more as it descends, so that, just above the sternum, in a short, fat-necked adult, the front of the tra- chea would be quite one inch and a half from the skin. 27. Trachea. — In the dead subject nothing is more easy than to open the trachea ; in the living, this operation may be attended with the greatest difficulties. In urgent dyspnoea you must expect to find the patient with his head bent for- ward, and the chin dropped, so as to relax as much as possi- ble the parts. On raising his head, a paroxysm of dyspnoea is almost sure to come on, threatening instant suffocation. The elevator and depressor muscles draw the trachea and lar- ynx up and down with a rapidity and a force which may bring the cricoid cartilage within half an inch of the sternum. The great thyroid veins which descend in front of the trachea are sure to be distended. There may be a middle thyroid artery. In children the lobes of the thymus may extend up in front of the trachea, and the left vena innominata may cross it unusu- ally high. Thus the air-tube may be covered by important TRACHEOTOMY IN CHILDREN, 3 parts which ought not to be cut. Considering all these possi- ble complications, the least difficult and the best mode of pro- ceeding is to open the trachea just below the cricoid cartilage, and if more room be requisite, to pull down the isthmus of the thyroid gland or, in children, to divide the cricoid itself. It is important that all the incisions be made strictly in the middle line, the " line of safety." With the free and generous consent of my friend. Dr. L. S. Pilcher, of Brooklyn, N. Y., I shall make use of the illustra- tions and much of the text of his able article in "Annals of Anatomy and Surgery," April, 1881. The description of the plates scarcely admits of abbreviation, hence I shall insert the most of it entire, and will make free use of the main por- tion of the article. The colored plate I have had prepared expressly for this part of the work. It is enlarged from Gray,, with a few changes. That part of the neck interesting to the surgeon in the op- eration of tracheotomy is comprised between the hyoid bone above, the sternum below, and the sterno-cleido-mastoid and anterior belly of the omo-hyoid muscle on each side. The space thus bounded has been designated by Dr. L. S. Pilcher,. " The Anterior Median Region of the Neck." DIPHTHERIA, CROUP AND TRACHEOTOMY. FIG. I a. THE VESSELS OF THE PRETRACHEAL SPACE, NATURAL SIZE FROM A CHILD OF 3 YEARS. A, Great transverse vein. BB, Internal jugular veins. CCC, Inferior thyroid venus plexus. D, Lateral thyroid vein. E, Left common carotid arteiy. F, Isthmus of the thyroid gland. G, Crico-thyroid space with arter>'. H, Superior thyroid ar- tery with accompanying vein. The structures met with in this operation are : The ski)i in this region is thin, soft and very movable ; in- deed, so great is the mobiHty that it is well for the operator, unless his experience in the operation under consideration is large, to mark out on the skin the line of incision before com- mencing the operation, otherwise, in the end, the lines of in- cision in the skin and in the muscles may be found not to cor- TRACHEOTOMY IN CHILDREN. respond. While the first division of tissue is being made, the skin should be either drawn tense, or it may be transfixed. FIG. I b. THE DEEP LAYER OF THE SUPERFICIAL FASCIA WITH THE ANTERIOR JUGULAR VENOUS PLEXUS — TYPICAL ARRANGEMENT. The Siipe^'ficial Fascia of this region may be separated into the superficial and the deep layers. The former, together with the skin, forms \h& first layer in this region. — Pilcher. In the latter are to be found spread-out nerve filaments and arterial twigs of no special importance ; but between this layer and the deep cervical fascia lie the venous trunks of the anterior jugular plexus. Fig. i a gives the most frequent arrangement, from which there are very frequent variations. " In this the venous radicles below the chin with, perhaps, communicating branches from the facial, or external jugular, unite to form two trunks which run downwards parallel with each other, a 6 DIPHTHERIA, CROUP AND TRACHEOTOMY. little to the outside of the median line on each side ; as they approach the sternum they sink beneath the deep cervical fas- cia, and each, turning sharply outwards, passes behind the sterno-cleido-mastoid, along the upper margin of the clavicle, to the outer border of the muscle, where, in common with the external jugular, it empties into the sub-clavian. A transverse branch unites the two lateral trunks above ; and again, just above the sternum, under the deep fascia, a similar communi- cating transverse branch is usual. "A frequent variation is the presence of but one trunk, which lies directly in the median line as shown in Fig. 2, and again at A, on Fig. i6. FIG. 2. SINGLE MEDIAN ANTERIOR VEIN. 'Other arrangements are shown in Figures 3 and 4, in which FIG. 3. ANTERIOR JUGULAR VENOUS FLEXUS. FIG. 4. ANTERIOR JUGULAR VENOUS FLEXUS. TRACHEOTOMY IN CHILDREN. 7 the absence of one of the usual lateral trunks is compensated for by a large obliquely transverse branch which comes from the external jugular and crosses the neck in its lower third to join the lateral anterior jugular of the other side." Some of these trunks may be divided either in the early or in the latter part of the operation, and may produce very embarrassing or even dangerous haemorrhage. " In the median line the deep layer of the superficial fascia is practically blended with the deep fascia proper, the points where they are separated by the anterior jugular venous plexus alone excepted. This deep fascia, which is the cervical aponeurosis proper, is of great in- terest and importance in this region. Stretched from the hyoid bone, over the thyroid cartilage above, to the upper border of the sternum below, this aponeurosis, at a point mid- way between the cricoid cartilage and the sternal notch, di- vides into two well-marked, dense fibrous layers, the more su- perficial of which is inserted into the anterior border of the sternum, and the deeper one into its posterior border, the in- terval between them being filled by connective tissue and fat." The fact of this union or separation should be borne in mind, else embarrassment may arise in the operation by sup- posing that both layers have been divided when it may be only one has been. The two layers should both be nicked, then the director will pass easily beneath, either upwards or downwards, and the venous trunks may thus be frequently avoided. DIPHTHERIA, CROUP AND TRACHEOTOMY. FIG. ANTERIOR CERVICAL MUSCLES. a, Sterno-cleido-mastoid. l>, omo-hyoid. r, sterno-hyoid. d, stemo-thyroid. h, hyoid bone. "This aponeurosis, with' the deeper layer of the superficial fascia, constitutes the second layer, and their incision the second step in the operation of tracheotomy." — Pilcher. The next structures met with are the sterno-hyoid and the sterno-thyroid muscles on each side. They are intimately connected by their sheaths to the cervical aponeurosis; their inner margins, varying as to proximity, are connected by a more or less dense layer of fibrous tissue. These, with the connective tissue layer, form the tJiii'd layer to be recognized in the operation. The dividing line between these muscles may not always be readily distinguished. By rendering the parts tense in the median line, the separation may be readily made by using a TRACHEOTOMY IN CHILDREN. blunt-pointed or dull knife. The separation having been ef- fected, tJie pre-tracheal space proper is opened ; and its struct- ures form thQ fo2(rth layer. " This space is divided into two nearly equal parts by the isthmus of the thyroid gland, which parts differ greatly as to their accessibility, and as to the possible complications with which operations in them may be accompanied." FIG. 6. PRETRACHEAL SPACE WITH TYPICAL ARRANGEMENT OF VESSELS AND OF THYROID GLAND FROM NATURE. A, Great transverse vein. BB, Internal jugular veins. C, Median inferior thyroid vein. D, Innominate artery. E, Left common carotid artery. F, Thyroid isthmus. G, Crico-thyroid space and arteiy. H, Superior thyroid artery. I, Lateral inferior thyroid vein. lO DIPHTHERIA, CROUP AND TRACHEOTOMY. " The inter-muscular connective tissue layer at the level of the isthmus of the thyroid is closely applied upon its anterior surface, and furnishes a sheath for it which is reflected outward upon the lateral lobes and affords a distinct fibrous envelope for the whole gland." It also unites intimately with the sheath of connective tissue surrounding the trachea ; thus con- necting the two organs closely, and securing their conjoint movements. By separating the muscles above the isthmus we expose the thyroid and cricoid cartilages. " Between the isth- mus and the latter there is found the fascia laryngo-tJiyroidea of Hueter, which covers the trachea. By tearing through this fascia transversely until the first ring of the trachea is ex- posed, it is quite easy to get under the fascia thyro-trachealis and separate the isthmus from the trachea to an extent suffic- ient to permit its depression so far as to expose the two rings next below." Thus tracheotomy may be performed above the isthmus without encroaching upon the cricoid cartilage. If more room should be required the cricoid may be divided — laryngo-tracheotomy — the dilatation of this cartilage in the very young being easily accomplished. "The structures just described, including the thyroid isth- mus, the fascia laryngo-thyroidea, and the fascia thyro-trach- ealis, compose \h& fourth and final layer into which the su- perior pretracheal structures are practically divisible — the identification and removal of which in their order is desirable. The isthmus of the thyroid may vary greatly in volume. The series of drawings from my own dissections, which illustrate the anatomy of the pretracheal space. Figures 6, 8, 9, 10, 11, 12, 13, 14 and 15, show the ordinary variations in the shape and volume of the isthmus. In one of my operations (Mary Sandford, aet. 10 years) there was present a very broad isth- mus which descended nearly to the upper border of the TRACHEOTOMY IN CHILDREN. II FIG. 7. LARYNX AND TRACHEA OF CHILD OF 6 YEARS, NATURAL SIZE, ISTHMUS ABSENT. PYRAMID OF LALOUETTE ON LEFT SIDE. sternum. By holding it up with a retractor, I was, however, enabled to expose the trachea and incise it without other complications. In a recent dissection upon the body of a girl, set. 6 years, I found the isthmus entirely wanting, an interval of four millimetres separating the inner borders of the lateral lobes in front of the trachea ; from the superior border of the left lobe there is prolonged upwards and inwards a glandular slip which is attached to the body of the hyoid bone — the pyramid of Lalouette. Fig. 7 shows the preparation the nat- ural size. Usually the second, third and fourth rings of the 12 DIPHTHERIA, CROUP AND TRACHEOTOMY. trachea are covered by the isthmus. The vascularity of the isthmus is also the subject of great variations. In addition to the vascular network in its interior, there is usually a small arterial loop which runs along its upper border (See H, Fig. 6) connecting the superior thyroid arteries on either side. This may be of considerable size, as in the case from which the drawing that constitutes the Fig. i a was taken, and as again in Fig. 8. FIG. 8. TRANSVERSE ANASTOMOSING SUPERIOR THYROID ARTERY OF LARGE SIZE ; ABNORMAL COURSE OF THE_^CRICO- THYROID BRANCH. D, Innominate arteiy. E, Left carotid artery. F, Isthmus of the thyroid gland. G, Crico-thyroid space. HH, Superior thyroid arteries. "An abnormal course of the superior thyroid artery, which may give to the isthmus arterial branches of unusual size, is not usual. In the case represented in Fig. 9, the anterior TRACHEOTOMY IN CHILDREN. 1 3 trunk of the superior thyroid artery passes as a vessel of con-- siderable size to the middle of the isthmus, where it breaks up into branches of distribution. A transverse vein, the compan- ion of the transverse artery, is regularly present at the supe- rior border of the isthmus, inosculating on either side with FIG. 9. IRREGULAR COURSE OF THE SUPERIOR THYROID ARTERY WITH ANOMALOUS SUB-HYOID AND CRICO-THYROID BRANCHES. the superior thyroid veins. (See Figure i a, and Figures lO, II, 13 and 15). The arrangement is more as if the superior veins from the upper border of either lobe had met and blended in the middle line ; from their point of union there is prolonged downward in the middle line of the anterior surface of the isthmus a perpendicular trunk, which is joined below by a varying number of branches which issue from the sub- stance of the lobes to form the inferior thyroid venous plexus. "Figure i a, and Figures lO to 15, inclusive, illustrate some of the varying conditions which these branches present as they lie upon the anterior surface of the isthmus. Of great importance to be borne in mind is the occasional pres- ence of a large venous trunk, which, having its origin in the 14 DIPHTHERIA, CROUP AND TRACHEOTOMY, FIG. lO. INFERIOR THYROID VENOUS PLEXUS. MEDIAN TRUNK CROSSING TO LEFT. FIG. II. INFERIOR THYROID VENOUS PLEXUS. The trunks uniting in the lower part of the space to form a single trunk which is deflected to the right. TRACHEOTOMY IN CHILDREN. IS FIG. 12. INFERIOR THYROID VENOUS PLEXUS. Lateral trunks only ; front of trachea clear. T, Large thymus gland. FIG. 13. INFERIOR THYROID VENOUS PLEXUS. Two lateral trunks united by oblique trunk crossing in front of trachea. i6 DIPHTHERIA, CROUP AND TRACHEOTOMY. sub-hyoid region above, passes down directly in the median line, deeply seated, between the third and fourth layers which I have described, covering the crico-thyroid space, and receiv- ing the superior thyroid veins at the upper border of the isth- mus, taking the place of the usual small perpendicular trunk, FIG. 14. INFERIOR THYROID VENOUS PLEXUS. Veins from left lobe crossing in front of trachea to the right ; veins from right lobe emptying by a short lateral trunk into right internal jugular vein. receiving the inferior thyroid veins below, and finally empty- ing into the great transverse vein. Such a large, deep anterior jugular trunk is seen in Fig, 16, in which case a large single superficial median anterior jugular is seen. An identical con- dition, both of the superficial and the deep vein, was met with by me in the case of a boy, set. 5 years (Thomas .Smith), in whom, however, I succeeded in opening the trachea without wounding either. In the subject which presented the abnor- mal course of the superior thyroid artery (Fig. 9), there was also TRACHEOTOMY IN CHILDREN. 17 a very large vein which accompanied the artery to the middle of the isthmus, and then turning directly downward ran in front of the trachea to disappear behind the sternum. The right internal jugular vein in this subject was impervious from the FIG. 15. INFERIOR THYROID VENOUS PLEXUS. Two lateral trunks connected by transverse branch in upper part of space. base of the skull to within four centimetres from the innomi- nate, a fibrous cord alone remaining in its place. Whenever this deep median anterior jugular vein is present, any method of reaching the trachea other than that of layer by layer would inevitably wound it and occasion dangerous haemor- rhage. " The transverse vessels of the isthmus, described above, are enclosed within the fibrous capsule of the gland, and when the fascia laryngo-thyroidea is scratched through transversely at the lower border of the cricoid cartilage, they are drawn down with the isthmus, and thus are secure from injury when this 1 8 DIPHTHERIA, CROUP AND TRACHEOTOMY. method of operating is adopted. Incision of the isthmus it- self, it is apparent, may be attended with a varying degree of haemorrhage and peril. Experience has shown that, though in most cases the bleeding from an incised isthmus stops spon- taneously after the introduction of a tube, and the restoration of respiration, yet repeatedly has impending suffocation been made complete by the flow of blood into the trachea with the first inspiration after it had been opened ; many cases also are on record in which fatal secondary hzemorrhage has occurred from an incised isthmus. Its division, therefore, is, when it is at all developed, always a perilous proceeding, and must pre- cipitate a crisis at a time when, especially, deliberation and caution are needed. In my own experience I have never been compelled to cut it. " The possible presence of a large crico-thyroid branch, or of the superior thyroid running abnormally across the crico- thyroid space is to be borne in mind if an incision is made in it. In Fig. 9, two small arteries running across this space are seen. Above the thyroid cartilage, immediately below the hyoid bone, another small transverse branch crosses the medi- an line of the neck, the hyoid branch of the superior thyroid, by means of which another anastomosis between these trunks is effected. I have seen an incision through the thyro-hyoid space prove disastrous by the unperceived escape of blood into the larynx and trachea until suffocation was occasioned. The case was that of an infant, aet. 19 months, who had in- haled the half of the body of a fish's vertebra into its larynx. The surgeon attempted to extract it through an incision which he made in the thyro-hyoid space ; a sudden collapse and ces- sation of breathing in the little patient caused him to abandon the attempt and to hastily incise the trachea below and insert a tube for the purpose of re-establishing the respiration. Fur- ther attempts to remove the foreign body were postponed un- til complete reaction should be obtained. At the end of two and a half hours the child made an attempt to cough, throw- ing out blood, and then suddenly expired. Upon post-mortem examination the air passages were found filled with blood. TRACHEOTOMY IN CHILDREN. I9 There having been no external oozing at the site of the trach- eal incision, which was filled by the tube, the inference, almost certainty, was that the haemorrahge had come from the sub- hyoid wound, having increased in amount as more perfect re- action had been obtained. The inferior pretracheal space, the space extending from the lower margin of the isthmus of the thyroid to the sternum, is much deeper than the superior space, in which, as has been seen, the superficial coverings are closely applied to the anterior face of the larynx and trachea. By the recession of the trachea, which follows the backward trend of the lower cervical and upper dorsal vertebrae, a continually increasing distance is produced between its anterior surface and the superficial coverings which roof it over. On either side, this space is walled in by the sheaths of the great ves- sels of the neck, above it is closed by the blending of the su- perficial layers with the envelope of the thyroid gland, its floor is the anterior face of the vertebral column, and below it is continuous with the anterior mediastinum. It is filled with loose connective and adipose tissues, containing some small lymphatic glands, and affording a bed in which ramify the vessels of the region. The thymus gland may still extend up into it from the mediastinum, and occasionally may be of suf- ficient size to embarrass attempts to uncover the trachea in this space. Fig. 12 is from a subject in which the thymus gland was found still large. In the course of an operation for tracheotomy in croup, as soon as this space is opened by the tearing of the intermuscular fascia and the retraction of the mus- cles, the alternate sinking in and thrusting up of the loose tissue of this space as the labored efforts at inspiration cause them to be sucked down behind the sternum and then projected again up into the wound at each exspiration, constituting a serious em- barrassment to deliberate and certain incision of the trachea ; a special retractor to depress towards the sternum this loose tis- sue greatly facilitates manoeuvres in this space. The vessels which are normally present in this space are the branches of the inferior thyroid venous plexus, the origins of which have been described on pages 13, 14, 15. But the abnormalities which 20 DIPHTHERIA, CROUP AND TRACHEOTOMY. occur here are numerous and important. The number, ar- rangement and size of the trunks of this plexus are subject to great variations. The typical arrangement is the one shown in the frontispiece, in Fig. i a, and again in Fig. 6, in which the radi- FIG. 1 6. THE PRETRACHEAL SPACE — FROM NATURE. A, Superficial median anterior jugular vein. B, Deep median anterior jugular vein. cles from the various parts of the thyroid gland converge to a common trunk which passes downward vertically in the median line in front of the trachea and empties into the great trans- verse innominate vein at its centre. Samples of the various modifications of this arrangement which I have found in my dissections are shown in Figures lO to l6 inclusive. Examin- ation of these illustrations will at once impress the lesson to be drawn as to the important variations of this plexus with reference to the middle line of the trachea. Fig. I2 shows the DIPHTHERIA IN CHILDREN. 21 middle line of the trachea not covered by any vessel, lateral trunks passing down on either side. In the subject (Fig. 7) in which there was no isthmus, the veins from the two lobes converge as usual to form a trunk in the median line below. The relations in this space of the large, deep anterior jugular trunk, described on pages 16-17, are shown in Fig. 16. "Just below the lower boundary of this space, crossing from left to right, is the great transverse or left innominate vein. Normally, its upper margin is on a level with the sternal notch, its lower crossing the origins of the arteries, which rise from the arch of the aorta. Its possible elevation above the sternal notch, particularly when the head is extended, should be borne in mind. The innominate artery so frequently rises up into the lower part of the pretracheal space that its presence there can hardly be considerd an abnormality. My own dissections have shown this to be of greater relative frequency in young children than in adults. Burns' observation was, that in early infancy the innominate artery seldom turns to the side of the trachea lower than a quarter to a half an inch above the chest. FIG. 17. FIG. 18. Innominate artery crossing trachea trans- The four great vessels arising separate- versely at a high point. ly from the arch of the aorta. He has seen it mounting so high in front of the trachea as to reach the lower border of the thyroid gland. Its usual point of origin from the arch of the aorta is in front of the trachea, 22 DIPHTHERIA, CROUP AND TRACHEOTOMY. which it crosses obliquely so as quickly to be found running up to its point of bifurcation along its side. Frequently its aortic origin is to the left of the trachea, as seen in Fig. i a, and in Figures 14 and 15, and in its upward course it does not FIG. 19. The four great vessels arising separately from the arch of the aorta ; the right sub-clavian and the left carotid cross- ing in front of the trachea above the sternum. FIG. 20. The four great vessels and the left ver- tebral arising separately from the arch of the aorta ; right sub-clavian from left side of arch, passing behind others in front of trachea to its proper side. EXPLANATION OF REFERENCES IN FIGURES 1 8 TO 20. a. Trachea and thyroid glands, h, Division of the bronchi, i, Arch of aorta. 2, Descending aorta. 3, Right innominate. 4, Left innominate. (Figures 23 and 24). 5, Right subclavian. 6, Right carotid. 7, Left subclavian. 8, Left primitive carotid. 9, Right vertebral. 10, Left vertebral. 11, Thyroid arter)'. 12, Pulmonaiy arterj'. reach the right of the trachea until it has ascended above the sternal notch. It may ascend vertically for some distance in front of or along the left side of the trachea, and then, turning abruptly, cross it transversely, as in the case shown in Fig. 17. The close proximity of this trunk has been often recognized by many operators during the operation of tracheotomy, being seen or felt pulsating at the lower angle of the wound. It has repeatedly been opened by ulceration from the pressure of the canula upon it, causing fatal haemorrhage. Delay on the part of the innominate in crossing the trachea may bring the right carotid also in relation to its anterior surface. Burns records TRACHEOTOMY IN CHILDREN. 23 FIG. 21. Carotids arising by a common median trunk between the origins of the sub- clavians. FIG. 22. Carotids arising by a common trunk on right side, right subclavian from left side of arch, passing behind the others in front of the trachea to its proper side. that, in a boy, aet. 12 years, he found the right carotid ascend- ing in front of the trachea for two and a half inches above the top of the sternum before it passed to the side. Many varia- tions in the branches which arise from the arch of the aorta FIG. 23. Right primitive carotid and subclavian arising separately from arch of aorta ; innominate on left side. FIG. 24. Right subclavian arising from the arch of the aorta ; both primitive carotids and the left subclavian by a common trunk on the left side. 24 DIPHTHERIA, CROUP AND TRACHEOTOMY. have been met with, some of which cause the front of the trachea above the sternum to be crossed by large arterial trunks. Figures i8 to 26, inclusive, from the work of Tillaux, " Anatomic Topographique," in which they are copied from Tiedemann, show some of the most important of these. Such a graphic presentation of these will convey a more perfect idea of the anomalies than any description. "A middle thyroid artery, arteria thyroidea ima, ascending vertically in front of the trachea up to the thyroid gland, is found, according to Neubauer, in one out of every ten cases. It is derived from the arch of the aorta, or the innominate usually. Irregular origins from other of the great vessels at the root of the neck have been noted. Fig. 27 shows two such vessels of small size, from one of my own injections. Fig. 28, from Tiedemann, shows a large median trunk arising from the FIG. 25. Left primitive carotid arising from right innominate. FIG. 26. Left primitive carotid arising from right innominate, left vertebral from arch of the aorta. aorta which took the place of the usual inferior thyroid ar- teries. Blandin states that he has seen a middle thyroid ves- sel as large as the radial artery. Burns records four cases in which the innominate artery, when on a level with the sternum, just before bifurcating, gave off from its left side a branch about the size of a crow-quill, which soon divided into two TRACHEOTOMY IN CHILDREN. 2$ main branches, and then broke up into a number of twigs which ascended along the front of the trachea to the thyroid gland in such a manner that there was hardly a single point of the trachea into which an incision could be made without di- viding some of the pretty large twigs of the vessel. The in- ferior thyroid arteries occasionally take an abnormal course, in which one of them crosses in front of the trachea. Norm- ally these arteries having passed up on either side from the subclavian, behind the sheath of the great vessels, to a point opposite the first ring of the trachea, pass horizontally inwards, then downwards, then upwards again, having made thus two curves in opposite directions, and finally penetrate the gland from behind. One of the inferior thyroid trunks is sometimes wanting, in which case its place is supplied by a branch from FIG. 27. FIG. 28. Arterias thyroidea; imie, double. Arteria thyrodea ima, single large aortic branch replacing the lateral inferior thyroids. the other side, which crosses to its destination in front of the trachea. Burns describes a preparation in the possession of Dr. Barclay, in which the two inferior arteries arise by a com- mon trunk from the right subclavian artery, the vessel, passing to the front of the trachea ; the left also ascends till within two tracheal rings of the cricoid cartilage. The replacement 26 DIPHTHERIA, CROUP AND TRACHEOTOMY. of both inferior thyroids by a common median trunk from the aorta (Fig. 28) has already been noticed. From this presentation of the varying vascular conditions in the pretracheal space, it is evident that the greatest caution should be used in attempting to approach the trachea through it. There is no line of safety to be preserved. Whatever freedom from other complications may be present, the presence, at least, of an important venous plexus, covering the trachea in the middle line, will demand special precautions for its avoid- ance, except in occasional instances. In addition to the dan- gers and difficulties which the haemorrhage from the wound of this plexus occasions, the additional peril of entrance of air into the heart through them has been found to be no chimera. The case which occurred in the experience of Professor H. B. Sands, in 1868, in which, while performing tracheotomy upon an adult, immediate death resulted from the rushing in of air through an incision in an inferior thyroid vein which had been prevented from collapsing by the fact that the tissues in which it was imbedded were indurated by recent inflammatory^ exu- dates — this case cannot be considered as germane to the con- sideration of the dangers to be apprehended from operations in which the tissues of the pretracheal space are healthy. But the case reported recently by Professor Parise, of Lille, France, in the "Archives Generales de Medecine," 1880, p. 571, illus- trates perfectly this danger. While doing tracheotomy for diphtheretic croup in a girl, set. 5 years, after having made the usual incisions, wishing to uncover more fully the trachea, which was covered by an unusually large thyroid isthmus, this surgeon wounded the left branch of the middle thyroid vein near its junction with that from the right side ; copious haem- orrhage resulted. In the effort to seize the trunk of the vein to tie it, the superficial wall only was seized and raised up, which rendered the vein patent for the moment, during which a strong inspiration took place, a sharp hiss was heard, and in- stant death followed without a cry or struggle. Upon autopsy, air was found in the right cavity of the heart. " The looseness of the peritracheal connective tissue permits TRACHEOTOMY IN CHILDREN. 2/ the trachea to be Hfted up from its bed and brought near to the surface when once it has been exposed. If a pair of catch- forceps, hke the pinces hcemostatigttes of Pean, be fastened on either side into the layer of fascia that has been torn aside from the front of the trachea, and then be permitted to fall outward to the side of the neck, by their own weight they will lift up the trachea, and depress the side walls of the pretracheal space so that the trachea is rendered quite superficial, and its incis- ion, and exploration greatly facilitated. " Some points as to the laryngo-tracheal tube itself remains for consideration. In the child, the thyroid cartilage is, rela- tively, little developed, and its upper border rises up behind the body of the hyoid bone, which obscures it except when the head is extended. This is well shown in Fig. 7, which is a life-size representation of the parts taken from a girl, set. 6 years. The outlines of the thyroid cartilage can not be clearly made out through the overlying tissues. The resistant outline of the cricoid cartilage, however, can always be recognized through the skin in children [?], a point of which Cassaignac made much in his method of tracheotomy. The distance be- tween the hyoid bone and the cricoid cartilage, in a child three or four years of age, is about i centimetre ; in the six-year old specimen, Fig. 7, the distance is i\/., centimetres. This space may be more than doubled by bending the head strongly back- ward. The relatively small size of the larynx in children per- sists until the time of puberty, so that the differences in size between the larynx of a child of three years and of twelve are small, and can not be estimated by the differences in stature. The result of this is that the cricoid cartilage is always placed relatively high in the neck of a child, and, as its position de- termines the position of the isthmus of the thyroid, the space between the lower border of the gland and the sternum is rel- atively large. As the larynx, however, begins to evolve at puberty, the cricoid cartilage is depressed, the thyroid gland descends along with it, and the comparative distance between the gland and the sternum is lessened in the adult. These points are especially noted by Burns in his work on " The Sur- 28 DIPHTHERIA, CROUP AND TRACHEOTOMY. gical Anatomy of the Neck," who drew from them inferences in favor of incising the trachea in children below the isthmus. Tillaux gives a table of distances between the cricoid cartilage and the sternum in thirty-one children between the ages of two and a half and ten years. The average for those between two and three years is 3\/2 centimetres ; for those between three and six years, 4 centimetres ; for those between six and ten years, about 5 centimetres ; while the average distance in twenty-four adults was but 672 centimetres, the lowest being 4^.,, and the greatest 8^/,. I have myself often felt surprised to find in very young children upon whom I have had occasion to operate, quite as much room in the pretracheal space as in children much older. As far as the trachea itself is concerned, an incision below the isthmus is certainly favored, for the younger the subject the less room there is above the thyroid isthmus and the more below it for gaining access to the air- tube. The greater depth and the varying vascular networks that are found in front of it in the pretracheal space, however, increase materially the dangers of attempts to reach it here. If, however, these difficulties can be met by skillful and deliber- ate [!] manipulation, the question of what particular point should be chosen for the incision ought to be decided less on the score of operative difficulties than on that of therapeutic value. Whichever will best secure the good aimed at by the operation ought to be chosen. In my own experience, I find that my earliest operations were through the cricoid and the first ring ; then followed a series in which, by depressing the isthmus, I incised the upper tracheal rings. In my last fifteen operations I have performed the low operation. My experi- ence has been sufficient to assure me that, as a rule, the ana- tomical difficulties which the low operation involve may be so controlled as to make it safe and facile, while if, on exposure of the contents of the pretracheal space, it is apparent that great peril would be incurred by persevering in the attempt to reach the trachea through it, prolongation of the incision up- wards so as to expose the space above the isthmus is always possible. * * * TRACHEOTOMY IN CHILDREN. 29 " If laryngo-tracheotomy, or tracheotomy through the upper rings by depressing the isthmus is chosen, the cricoid prom- inence should fall midway in the incisions ; if the low opera- tion is to be done, the incision, beginning above the cricoid, should extend downward from it to the sternum. "The elastic and compressible nature of the tracheal rings in young children may be the occasion of a serious complica- tion, embarrassing the last steps of an operation for tracheot- omy. In conditions of laryngeal stenosis the force of the at- mospheric pressure upon the parts at the outlet of the thorax is extreme, and is supported by the musculo-aponcurotic cov- ering which is stretched over the trachea from cricoid to stern- um, secured, as it is, along the sides to the sterno-cleido-mas- toid muscles. After this protective covering has been incised, the tissues beneath are exposed to the force of the atmos- pheric pressure. The sucking downward behind the sternum of the loose pretracheal connective tissue has already been noted ; the trachea is affected by the same pressure, and in children, in whom the walls of the tube are much less resist- ant than in adults, it may be so flattened by the retraction or insucking of its anterior wall that the already scanty supply of air to the lungs is materially diminished and the symptoms of impending asphyxia become alarmingly aggravated. The more intense the obstructive symptoms previous to the operation, the greater the liability to peril from this cause, and the more likely to occur a crisis in which instantaneous opening of the trachea at any hazard is demanded. " The mucous membrane of the trachea receives from the inferior thyroid arteries vessels which may acquire in the adult some development and, even in children, afford a vascular sup- ply to this membrane that requires notice in a surgical point of view, in consequence of the haemorrhage which they occasion, in tracheotomy, when the trachea is incised. However per- fectly bleeding may have been arrested before the trachea is opened, some haemorrhage will follow the opening of the trachea, the blood flowing into the tube and occasioning the violent spasm of coughing which occurs when the trachea is 30 DIPHTHERIA, CROUP AND TRACAEOTOMY. Opened. The impression has been usual that this paroxysm of cough is caused by the stimulating effect of the sudden free access of the air to the interior of the trachea. The idea that it is, in fact, caused by the entrance of blood into the tube is advanced by Tillaux, who supports it by an observation, com- municated to the Surgical Society of Paris, in 1874, of a case in which, having opened the trachea in an adult by the use of the thermo-cautery, there was not a drop of blood shed ; when FIG. 29. Aperture of glottis when fully dilated. Actual size from nature in child 2 years and 8 months. — Holmes. FIG. 30. Transverse section through cricoid car- tilage. Same subject as Fig. 29. Natural size. FIG. 31. FIG. 32. Same parts in child of 3 years and 10 months. ' the trachea was opened no cough followed, and those present, not hearing the characteristic sound, could not believe the op- eration finished. Burns quotes a case in point from Sabatier, in which a soldier, having suffered tracheotomy for the relief of suffocative laryngitis, was so tormented by a convulsive cough produced by blood falling into the trachea that it was impossible to keep the canula in place. Relief was finally ob- tained by turning him upon his face until the blood ceased to flow. The patient ultimately recovered. Haemorrhage from TRACHEOTOMY IN CHILDREN. 31 this source is usually insignificant in its amount, and is speedily arrested by the pressure of the canula when inserted. The di- ameter of the interior of the tube is of importance to be considered with reference to the size of the canula to be used after trach- eotomy. The diameter of the orifice of the glottis is always much less than that of the trachea proper. The relative di- mensions of the entrance to the air tube, and of the tube it- self, are well shown in Figures 29 to 34, copied from Holmes on "The Surgical Diseases of Children." The inference has been drawn from this that the tube to be used after tracheoto- my need not be of the full size that the calibre of the trachea FIG. 33. FIG. 34. Same parts in child of 9 years and 9 months. would admit. The special conditions which children present after tracheotomy for croup, by the continual accumulation in the tube of tenacious mucus, make it desirable, however, that in such cases tubes of as large calibre as possible should be used. Tillaux gives measurements of the diameter of the trachea in nine children between two and five years, and Marsh, in the " St. Bartholomew's Hospital Report," Vol. HI., 1867, of eighteen children, of the same age. From these measure- ments it appears that, while there is a gradually increasing aver- age diameter, there are many individual variations in those of the same age, and a diameter in the older ones smaller than in some of the younger ones is not uncommon." "Boy, 1 6 months, <( 27. years,