rnLUMBIA LIBRARIES OFFSITE C HEALTHSC,ENCESSTANDARD HX00034380 TECHNIC OF THE CARREL METHOD J, DUMAS 6? ANNE GARREt tRX>V3\ _D Columbia ?Hntoer*tt|> i n tfje Citp of Jleto gov k College of îBfjpôtcians anb âutrgeonsi Reference Uttirarp Digitized by the Internet Archive in 2010 with funding from Open Knowledge Commons http://www.archive.org/details/technicofirrigatOOduma TECHNIC OF CARREL METHOD TECHNIC OF The Irrigation Treatment of Wounds BY THE CARREL METHOD BY J. DUMAS & ANNE CARREL AUTHORIZED TRANSLATION BY ADRIAN V. S. LAMBERT, M. D. Acting Professor of Surgery in the Collage of Physicians and Surgeons (Columbia University) New York With an Introduction by W. W. KEEN, M.D., L.L.D., F.R.C.S. (HON.) PAUL B. HOEBER NEW YORK 37 Copyright, 191 7, By Paul B. Hoeber Published, November, iqi? mil 1 i^ JT) St) Printed in the United States of Amerfca Errata The words calcium chloride have been used throughout the book in place of the words chloride of lime or bleaching powder. It is suggested that the words chloride of lime or bleaching powder be substituted in each instance. This change should be noted on page 56, lines 5, 10, 13, 16; page 57, line 16; page 58, lines 12, 14, 22; page 59, line 3 and in table ; page 60, lines 7, 9, 19 ; page 61, line 20 ; page 80, line 12. INTRODUCTION Alexis Carrel's genius has been shown in many remarkable ways and has already ~eceived the hall-mark of a Nobel prize. But now he has done a still greater jractical service to humanity in the new ^nd wonderfully successful technic in treating war wounds by means of Dakin's Solution. A colleague, M. le Dr. J. Dumas, and Dr. Carrel's devoted and tal- ented wife — truly a helpmate, who has Ven so valiant an assistant in all his re- earches both in this country and in France — have amplified the details of this treat- ment in a small brochure to which, in its English translation, it is a genuine pleas- ure for me at the request of the publisher to furnish this brief introductory note. Every surgeon in the various military and naval forces and also those in civil life who have to do with industrial and other 5 2 (V 6 INTRODUCTION accidental wounds should know this tech- nic by heart and practice it with exactness. They will be rewarded by a most gratify- ing success. Wiluam W. Keen, Philadelphia, November 19 17. PREFACE So much interest has centered about the method introduced by Dr. Carrel for the treatment of war wounds that any book embodying his ideas is certain to be of service. This small book was written by Madame Carrel, who has worked at Compiégne and become a most proficient member of that highly trained and techni- cally skilled staff. It was written pri- marily for the information of nurses so that they might have a clear, short account of the various details of the technic, and an accurate description of the apparatus used in carrying it out. The book in no way supplants the more complete ac- count written by Dr. Carrel, The Treat- ment of Infected Wounds* An effort has been made to keep it simple and direct * Published by Paul B. Hoeber, New York. 7 8 PREFACE so that it might serve as a guide for those wishing to become proficient assistants. It is, therefore, shorn of all theoretical considerations which might be confusing or be a subject of controversy. Perhaps this is not the place to sound the praises of the method, but I cannot re- frain, even at the risk of being somewhat out of order, from bearing witness to the immense value which the treatment has, not only in the wounds of war but in the treatment of pyogenic infections in civil practice. This is a fairly literal translation of the first portion of the book, with such few additions as seemed wise in view of some of the latest improvements now being em- ployed by Dr. Carrel. The appendices have been translated into technical Eng- lish which gives strictly the content and, for English readers, will prove easier reading and less cumbersome than a closer following of the original French text. For the benefit of English speaking read- ers who may proceed to France, a short PREFACE 9 glossary of French terms employed for designating the various elements of the apparatus has been appended. In this book no attempt has been made to teach surgery or to explain how and in what cases the treatment is employed. If it leads any to employ correctly the latest tool of our art it will have amply justified its publication. Adrian V. S. Lambert. New York, November 19 17. CONTENTS PAGE Introduction by William W. Keen, M.D 5 Preface 7 I Materials Used in the Dressing . 15 II Preliminary Remarks of the Mi- croscopical Examination of the Wound Secretions 25 III The Dressing 26 IV The Irrigating Apparatus ... 30 V Setting Up the Irrigating Appara- tus . 42 VI The Technic of Irrigation . . 47 VII Appendices — (1) The Preparation of Da- kin's Solution .... 55 (2) The Microscopical Exam- ination of War Wounds by the Carrel Method . . 63 VIII Glossary 79 IX Index . 83 LIST OF PLATES PLATE PAGE I Various Sizes of Instillation Tubes . 17 II Covered Instillation Tubes . . .19 III Distribution or Instillation Tubes Cov- ered with Turkish Toweling and Provided with Guy Ropes for Fix- ation at Edge of Wound . . . . 21 IV Irrigation Apparatus Showing Sup- porting Stand with Flask in Place . 31 V Conducting and Instillation Tubes . 33 VI Enlargement of a Portion of the Ap- paratus Shown in Plate IV . . . 35 VII Glass Conducting Connector and Glass Distributors 39 VIII Supporting Stand 43 IX Detail of the Adjustable Parts of the Supporting Stand 45 X Pinchcock and Safety-pin .... 49 XI Graphic Record of Bacterial Count . 75 TECHNIC OF THE IRRIGATION TREATMENT OF WOUNDS BY THE CARREL METHOD The sterilization of wounds by repeated irrigations with a solution of hypochlor- ite of sodium, called Dakin's Solution (see Appendix I) requires the use of spe- cial, but extremely simple, apparatus and the application of dressings which assure the prolonged contact of the antiseptic with all portions of the wound. MATERIALS USED IN THE DRESSINGS I. Distributing or "Instillation" Tubes (Tubes distributeurs). — These are rubber drainage tubes No. 16 French (4 mm. in- ternal diameter, the wall 1 mm. thick), 0.3 to 0.5 m. long. They are of two varieties: (a) Simple or non-perforated distribut- ing tubes in which the ends are open, and 15 i6 IRRIGATION OF WOUNDS half a centimeter from one end a large lat- eral opening is made (Plate I). (b) Perforated distributing tubes which have one end closed by being tied with a linen thread, and whose walls are perforated from this closed extremity for a distance of 5, 10, 15, 20 cm. by holes 1 /r m 1 mm. in diameter, 1 cm. apart. These are spoken of as 5, 10, 15 or 20 cm. tubes. The rôle of these tubes consists in con- veying the antiseptic to all recesses of the wound. The portion of these tubes which is perforated with holes is often covered with Turkish toweling. This should be firmly attached to the tube so that it can- not be left in the wound on the removal of the tube. These tubes covered thus are used on superficial wounds where the fluid must be spread over a flat surface or in wounds with dependent openings where the distribution of the fluid is difficult. Threads are left long at the ends of the toweling, which serve as guy ropes to steady the tube (Plates II and III). They are fastened to the skin with small pieces PLATE I Various Sizes of Instillation. Tubes Tubes 5, io, 15, and 20 cm. in perforated length ; also sim- ple and loop tubes. PLATE II A B Covered Instillation Tubes A. — Covered with Turkish toweling. B. — Cross section of covered tube. PLATE III Distribution or Instillation Tubes Covered with Turkish Towel- ing and Provided with Guy Threads for Fixation at Edge of Wound MATERIALS FOR DRESSING 23 of adhesive plaster to prevent their shifting. 2. Tampons and Compresses of Gauze. — These do not differ in any particular from similar articles usually used by all surgeons. 3. Cotton Pads. — These are of four sizes measuring 0.25 by 0.14, 0.33 by 0.22, 0.53 by 0.33, 1. 10 by 0.45 m. They consist of a layer of non-absorbent cotton and a layer of absorbent cotton (except that the small ones are composed of absorbent cot- ton only) wrapped together in a single thickness of gauze which should be folded carefully back over the absorbent cotton completely covering it in its entire extent. All these materials should be carefully sterilized as follows : (a) The distributing tubes are sterilized in the autoclave at 120 C. for twenty minutes in large glass test tubes, closed with cotton stoppers, in which they are pre- served sterile until used. (b) The tampons, compresses and cot- ton pads are sterilized for 45 minutes in the autoclave at 134 C. in large metal 24 IRRIGATION OF WOUNDS boxes. If one does not possess enough or sufficiently large boxes for sterilizing the larger pads it would be well to place them in the autoclave each wrapped separately in a piece of linen or white paper. 4. Sterile Vaseline Compresses. — Their use prevents or diminishes the irritant ac- tion which the antiseptic has on the skin of certain people in the region of the wounds treated by irrigation. These vase- line compresses are prepared in the follow- ing manner : A number of pieces of gauze are cut measuring about 6 by 12 cm. A layer of white vaseline is spread on one of the surfaces of each with a spatula, and the squares are then packed one above the other in air-tight metal containers. The containers are placed in the hot air steril- izer, absolutely horizontal so that the liquefied vaseline cannot run out, and are sterilized for thirty minutes at 130 C. 5. Articles to Keep the Dressings in Place. — There should be on hand to steady the dressing and hold it in place the fol- lowing: MICROSCOPICAL EXAMINATION 25 (a) Strips of unstarched gauze; (b) Flannel binders (so-called many- tailed bandage) ; (c) Safety-pins of different sizes; (d) Adhesive plaster. I. PRELIMINARY REMARKS ON THE PUR- POSE OF THE MICROSCOPICAL EXAMI- NATION OF THE WOUND SECRETIONS We are to suppose that the wound which is to be subjected to our treatment has al- ready had previous care : tissue fragments and foreign bodies have been removed several days previously, the wound has been carefully explored and cleansed, and all parts of it have been made readily accessible. Before commencing the dress- ing a preliminary microscopical examina- tion of the wound secretions is necessary, in order to determine the degree of infec- tion. This examination has to be repeated every day in order to follow the progress of disinfection, and to determine the mo- ment when this disinfection is sufficient to 26 IRRIGATION OF WOUNDS allow the closure of the wound without danger (see Appendix II). ii. the: dressing The preliminary microscopical exami- nation having been made, the surgeon is ready to draw on his rubber gloves * and to do the dressing. The nurse who is assisting must have on her dressing tray, besides tubes, tam- pons, cotton pads, vaselined compresses and the articles necessary for fixing the dressing: (a) A few sterile forceps (Kocher's without teeth) ; (b) Several pairs of sterile scissors; (c) Sterile basins; (d) Dakin's Solution. i. The nurse should seize and hand to the surgeon all the sterile things which * The rubber gloves are used for the protection of the surgeon. They are not sterile and are not changed for each case but are worn during the entire period while the surgeon does several dressings. THE DRESSING 27 he may require, using for this purpose a pair of large strong forceps, thus avoid- ing any possible contamination. The nurse first hands two sterile for- ceps to the surgeon with which he is to handle the sterile dressings, and place them on the wound without ever touching them with his hands. These forceps are changed not only for dressing each pa- tient, but very often also for dressing dif- ferent wounds in the same patient, when these have different degrees of infection. 2. The nurse should then hand the sur- geon as he calls for them : (a) Tampons or compresses moistened with Dakin's Solution, if the condition of the wound requires cleansing ; * (b) Scissors, if there is any necrotic tissue to be excised ; (c) One or more simple distributing tubes or those perforated for 5, 10, 15, or 20 cm., depending upon the size and shape * The wound may be cleansed with a solution of neutral sodium oleate which is not irritating to the skin or wound. 28 IRRIGATION OF WOUNDS of the wound, the amount of infection or the presence or absence of necrotic tissue on its surface. Some of the tubes are placed in the deep parts and pockets of the wound and underneath skin flaps, while others are laid on the superficial por- tion in such a way that the perforations rest on the necrotic tissues or the most infected areas. These superficial tubes are held in place by means of strips of ad- hesive plaster attached to the skin several centimeters away from the margins of the wounds. (d) Gauze compresses moistened with Dakin's Solution in a sterile basin are used to keep the tubes in place, to close off cer- tain portions of the wound, to dilate fistu- lous tracts, to lift up a flap, in short to cover or line the entire wound. When these compresses have been inserted in the wound, they absorb a considerable amount of irrigating fluid which is thus distributed and kept in contact with all recesses of the wound. (e) Vaselined compresses, which are to THE DRESSING 29 be used around the wound on the skin that is exposed to the action of any of the antiseptic solution which leaks out of the dressings. * Finally, the dressing is completed by covering all the compresses with a cotton pad of correct size so placed that the ab- sorbent cotton side lies toward the wound. When the dressing has been applied to an extremity, the cotton pad should be large enough to encircle the limb. The cotton pads are best held in place by safety-pins, if there is no danger of the dressing being displaced. If band- age is used, it should be loosely wound so as not to compress the distributing tubes. These tubes should project several centi- meters beyond the dressings. A many-tailed flannel binder is often preferable to the roller bandage. 3. The adjustment of this binder avoids moving the wounded limb, which is al- * In place of the vaseline compresses the skin surrounding the wound may be covered with vas- eline smeared on with a spatula. 30 IRRIGATION OF WOUNDS ways troublesome during the application of a roller bandage, and allows the em- ployment of safety-pins. III. THD IRRIGATING APPARATUS The irrigating apparatus (Plate IV) is composed of: i. The Flask or Reservoir (Ampoule) (see Plate IV) of glass, with a capacity of one liter (1.75 pints); it is the container for the antiseptic fluid. The flask has a short neck and a funnel-shaped opening at its upper end for the introduction of the fluid. The lower end is tubular with an internal diameter of 7 mm., over which the conducting tube fits. 2. Conducting Tube (Tube adducteur) (Plate V, CT and Plate VI, CT).— Through this rubber tube, which has an internal diameter of 7 mm., the fluid runs from the reservoir to the tubes in the wound. If the dressing consists of a single tube or of two, three, or four distributing or "instillation" tubes (Plate IV, Plate V, PLATE IV Irrigation Apparatus, Showing Supporting Stand with Flask in Place Attached are main conducting tube, glass conductor, secondary conducting tubes, glass distributors and instil- lation tubes. PLATE V Conducting and Instillation Tubes A. — Conducting tube, CT, shown connected with distribution or instil- lation tubes, IT, by a glass distributor, C, with four outlets. B. — Loop instillation tube connected up with a glass distributor. PLATE VI Enlargement of a Portion of the Apparatus Shown in Plate IV CT, main conducting tube ; A, glass conducting connector ; SCT, secondary conducting tubes ; B, C, glass distributors ; IT, instillation tubes ; S, simple instillation tube ; TT, tube covered with turkish toweling with guy threads; P, pinchcock. IRRIGATING APPARATUS 37 Plate VI, IT) the ends of which are near together where they emerge from the dressing, the conducting tube for a great part of its course from reservoir to dressing should be long enough to rest on the bed without being stretched. If it is too short it is always easy to lengthen it by joining on a new section of rubber tubing of proper length. The primary rubber conducting tube (Plate VI, CT) can be connected with two secondary tubes (secondary rubber con- ducting tubes, Plate VI, SCT), so that it is possible to irrigate from a single flask a wound which contains more than four rub- ber distributing or "instillation" tubes, or two wounds which are near each other. This is accomplished by means of con- nections which we call glass conducting connectors. (Plate VI, A.) 3. Glass Conducting Connectors (Rac- cords adducteurs) (Plate VII). — These are of two kinds, straight glass cylindrical connectors ; and others of the same diame- 38 IRRIGATION OF WOUNDS ter, but bifurcated into a "Y" (Plate VII, A). 4. A Pinchcock or Clamp (Pince de Mohr à rassort) (Plate X, Fig. A).— This should be placed on the primary rub- ber conducting tube (Plates IV; VI, P) to prevent the liquid from escaping in the in- tervals between irrigations. 5. Glass Distributors (Raccords dis- tributeurs) (Plate VII, B, C, D).— These are of glass and connect the rubber con- ducting tubes with the rubber distributing tubes. (Plate VC; Plate VI B, C.) If there is only one distributing tube in the wound, then a single straight glass distrib- utor is used; in other cases a two, three, or four branched glass distributor is required when two, three, or four distributing tubes are employed. The glass distributors are called simple (Plate VII, D), forked(Plate VII, B), trident, and comb shaped (Plate VII, C), according to the number of branches. The internal diameter of the end of these distributors which is to join the PLATE VII Glass Conducting Connector and Glass Distributors Glass connector, A, is 7 mm. diameter throughout; glass distribu- tors (B, C, D) have a diameter of 7 mm. at the larger end and 4 mm. at the smaller. E is a small connecting tube of 4 mm. diameter. ; • ni IRRIGATING APPARATUS 41 rubber conducting tube should be 7 mm;; the other ends over which the rubber dis- tributing tubes fit should have an internal diameter of only 4 mm. (see Plate VII) . 6. Small Straight Glass Distributing Tubes (Petits raccords droits) (Plate VII, E). — Sometimes the ends of the rub- ber distributing tubes do not project far enough outside of the dressing and can- not, therefore, be readily connected to the glass distributors. By means of a small glass tube with an inner diameter of 4 mm. and length of 0.025, it is a simple matter to attach an additional piece of rubber tub- ing of the same diameter as the rubber dis- tributing tube. The entire apparatus should be washed : n warm soap-suds and rinsed in boiled iter. The flask should be washed out \ ith Dakin's Solution and the glass con- necting pieces and rubber tubing immersed for two hours in the same solution. If the apparatus has not been contaminated, no further sterilization is necessary. 42 IRRIGATION OF WOUNDS IV. SETTING UP OF THE IRRIGATING APPARATUS The flask (see Plate IV) containing the antiseptic solution is closed at its upper end with a plug of sterile cotton. The rubber conducting tube, to which the spring-clamp is attached, is connected to its lower end (Plate IV) and provided with a simple or Y-shaped glass conduct- ing connector (Plate VI, A). This flask is suspended at a height of 0.60 to 0.80 m. above the level of the injured person by means of a stand attached to one of the bed-posts. We have designed a stand with a sliding carrier, which holds the flask and permits of an adjustment to different levels (Plates VIII and IX). All that remains to be done is to connect the lower end of the rubber conducting tube or tubes with the rubber distribut- ing tubes which project from the dress- ing (Plate V, C; Plate VI, B and C), and the irrigation can be begun. This connection is made by means of PLATE VIII Supporting Stand The slot makes it possible to ad- just the flask holder at suitable levels. PLATE IX <~2'/a--> E3E ES < 5" -> •/2*->a <-— 5»r. _> \/ <, 5 n > Detail or the Adjustable Parts of the Supporting Stand, The grooved slot provides for lifting the upper rack so that the flask may be inserted. TECHNIC OF IRRIGATION 47 the glass distributors (Plate VII, B, C, D). The latter are selected according to the number and arrangement of the rub- ber distributing tubes; their larger end is slipped into the secondary rubber conduct- ing tube, while their small ends are con- nected to the rubber distributing tubes (see details in Plate V and Plate VI). To prevent slipping of the tubes a large safety-pin (Plate VI and Plate X, Fig. B) should be fastened to the cotton pads of the dressing and should enclose between its branches the large end of the glass dis- tributor covered by the rubber conducting tube. A safety-pin should also fasten the glass conducting connector. V. TH3 TECHNIC OF IRRIGATION These preliminaries having been com- pleted, the procedure is begun by which an amount of fluid is carried into the dressings sufficient to maintain a continu- ous action of the antiseptic. Every two hours, night and day, the pinchcock on the rubber conducting tube is opened, for 48 IRRIGATION OF WOUNDS a variable length of time, depending on the gravity and nature of the wound. Ordinarily, the pinchcock must be opened for from one half a second to three seconds in order to allow enough antisep- tic solution to flow out to soak the dress- ings and fill the wound. This is learned after a little experience. It is a good plan to determine the time that the solution shall be allowed to flow by doing the first irrigation of a wound while it is still un- covered by the outside dressing. At each irrigation, one must be certain that the fluid flows freely, if this is not the case, the cause of the obstruction must be sought. The rubber conducting tube should be examined from its point of con- nection with the flask to the glass distribu- tors, and any compression relieved and bends straightened out. The exposed parts of the rubber distributing tubes are also examined. If all these are in good order, the trouble must be located in the interior of the dressings, and the surgeon should therefore be notified. When the distribut- PLATE X B PlNCHCOCK AND SAFETY-PIN À. — Enlarged view of pinchcock used to regulate the flow of the antiseptic solution. B. — Enlarged view of safety-pin showing method of holding tubes and glass distributors in place. TECHNIC OF IRRIGATION 51 ing tubes are not changed at every dress- ing, it is absolutely necessary to be certain of the permeability of the tubes by inject- ing some solution through them with a syringe. As the irrigating fluid often oozes out of the dressings, rubber sheeting covered with a bed-pad should be placed under the patient, so that the bedding shall not be soaked. This bed-pad can be changed as often as it is necessary. APPENDICES APPENDIX I PREPARATION OF DARIN'S SOLUTION (daufresne's T£CHNIC) D akin' s Fluid is a solution of sodium hypochlorite for surgical use. Numerous experiments and a prolonged practical ex- perience with the solution have shown that it must have the following properties : (a) The fluid must not contain caustic alkali. In order to use a hypochlorite solu- tion for the treatment of wounds, it must be free from traces of caustic soda ; Javel water, Labarraque Solution and all solu- tions not prepared in the manner we shall describe, cannot, therefore, be used. (b) The strength of the hypochlorite solution must be absolutely fixed between 0.45 and 0.5 per cent. Solutions that are weaker than 0.45 per cent, are too weak; those that contain more than 0.5 per cent. 55 56 IRRIGATION OF WOUNDS of the hypochlorite are irritating to the tissues. Chemicals Required for the Prepara- tion of the Solution. — Three chemicals are indispensable : calcium chlorid, dry so- dium carbonate,* and sodium bicarbon- ate. As obtained commercially, the compo- sition of the last two of these chemicals is fairly uniform and will suffice for all prac- tical requirements. In commercial calcium chlorid, however, the active chlorine (free chlorine) varies within wide limits. Be- fore the calcium chlorid is used, it is nec- essary to determine its percentage of free chlorine by titration. Titration of the Calcium Chlorid. — For this purpose the following apparatus is necessary : A 25 ex. English burette graduated in * This salt is obtained without any difficulty in the open market under the name of "Solvay's soda" or "carbonate of soda, Solvay." Where only the crystalline carbonate can be obtained, 2.85 times more of it than of the dry salt must be used (on account of the water of crystallization). DAKIN'S SOLUTION 57 tenths of a cubic centimeter; a 10 c.c. pipette, and a deci-normal solution of so- dium hyposulphite. The standard deci-normal solution of sodium hyposulphite is on the market, or it can be prepared by dissolving 25 grams of crystalline chemically pure sodium hy- posulphite in one liter of distilled water. The solution is correct if it decolorizes an equal volume of a deci-normal iodine solu- tion made by dissolving 1.27 grams of iodine and 5.0 grams of potassium iodid in 100 ex. of water. Everything being ready for the quanti- tative test, select an average sample of the calcium chlorid by selecting small quanti- ties at random from different parts of the stock and carefully mixing them. Weigh off 20 grams of this average sample and dissolve it as completely as possible in 1 liter of tap water; let the so- lution stand for several hours, shaking it from time to time. Filter. With the graduated pipette, measure off 10 c.c. of the clear fluid, and add to them 58 IRRIGATION OF WOUNDS 20 ce. of the deci-normal solution of po- tassium iodid and 2 c.c. of acetic or hydro- chloric acid. To this mixture, drop by drop, a deci-normal solution of sodium hy- posulphite should be added until the fluid is entirely decolorized. The number of cubic centimeters of the solution of sodium hyposulphite which are required to decolorize the solution multi- plied by 1.775 will give the weight of the active chlorine contained in 100 grams of calcium chlorid. Having found this number, by referring to the following table the amount of cal- cium chlorid, carbonate of soda and so- dium bicarbonate which is necessary to prepare 10 liters of Dakin's Solution can be read off. Example. — If 16.6 c.c. of the deci-nor- mal hyposulphite solution were necessary to decolorize the test solution, the titer of active chlorine of the sample of calcium chlorid is the following: 16.6 X 1.775 = 29.7 per 100 DAKIN'S SOLUTION 59 The quantities necessary to make 10 liters of the solution would be in this case : Calcium chlorid 154 grams Carbonate of soda, anhy- drous 77 Bicarbonate of soda 64 Quantities Used rr-r=! to Prepare 10 Liters or Darin's Liter oe Solution; ClONa Content 0.45 ro 0.50 per cent. Calcium Chlorid Chlorid of Carbonate of Bicarbonate of Calcium Soda, Dry Soda 20 230 gms. US gms. 96 gms. 21 220 no 92 22 2IO 105 88 23 20O IOO 84 24 IQ2 96 80 25 184 92 76 26 177 89 72 27 17c 85 70 28 164 82 68 29 159 80 66 30 154 77 64 31 148 74 62 32 144 72 60 33 140 70 59 34 135 68 57 35 132 66 55 36 128 64 53 37 124 62 52 ■ a If we have only the crystalline sodium carbonate, it will be necessary to use 6o IRRIGATION OF WOUNDS 219.45 grams of the crystalline carbonate instead of 77 grams of the anhydrous salt. The Preparation of D akin 3 s Solution. — To prepare 10 liters of the solution: 1. Weigh out accurately the quantities of calcium chlorid, sodium carbonate and sodium bicarbonate required; 2. Place the calcium chlorid in a 12 liter flask, add 5 liters of tap water, shake vig- orously for several minutes, and then let it stand for 6 to 12 hours (over night, for example) ; 3. At the same time, dissolve the car- bonate and bicarbonate of soda in the other five liters of cold water ; 4. Pour the solution of soda salts into the flask containing the supersaturated solu- tion of calcium chlorid; shake thoroughly for several minutes and allow the mixture to stand in order to permit the carbonate of calcium, which is formed, to settle down. At the end of half an hour, syphon off the supernatant liquid and filter it through two thicknesses of filter paper. One should DAKIN'S SOLUTION 61 obtain a perfectly clear liquid whicn must be protected from the light. Exposure to light changes the hypo- chlorite solution fairly quickly. If the pre- pared solution has to be kept for any length of time it is advisable to preserve it in large bottles or carboys of black glass. This solution should never be exposed to a temperature above 40 C. (104 F.), and it goes without saying that it should never be sterilized in the autoclave. Heat changes the hypochlorite into a compound which contains chlorids and chlorates, and deprives it of all antiseptic properties. Titration of D akin 3 s Solution. — It is ad- visable to control the titer of the solution from time to time. For this purpose, the same apparatus and reagents are neces- sary as are required for the estimation of the active chlorine in the calcium chlorid: To 10 c.c. of the solution add 20 c.c. of the deci-normal solution of potassium iodid and 2 c.c. of acetic or hydrochloric acid. Titrate this mixture with a deci-nor- 62 IRRIGATION OF WOUNDS mal solution of sodium hyposulphite until it is completely decolorized. The number of cubic centimeters used multiplied by 0.03725 will give the weight of the sodium hypochlorite in 100 ex. of the solution. The solution is correct if 12 to 13 c.c. of the deci-normal hyposulphite solution are required to decolorize the quantity of test solution indicated above: 13 X 0.03725 = 0.485 ClONa per 100. Estimation of the Alkalinity of D akin' s Solution. — It is a simple matter to distin- guish the solution made in the way here described from commercial hypochlorite solutions and Labarraque Solution: For this purpose place about 20 c.c. of the solution to be tested in a beaker and sprinkle a few centigrams of powdered phenolphthalein on the surface. With properly prepared Dakin's Solution abso- lutely no coloration will ensue whereas Javel water and Labarraque Solution will give an intense red color, indicating in the latter the presence of free caustic soda. APPENDIX II THE MICROSCOPICAL EXAMINATION OF WAR WOUNDS BY THE CARREL METHOD (DR. VINCENT) Its Aim. — The microscopical examina- tion of the wounds is necessary: i. To gain knowledge of the degree of infection of the wounds at the beginning of and during the course of the treat- ment; 2. To follow the progress of the disin- fection so that, if the wound does not im- prove as it should, additional measures can be instituted; 3. To substantiate the clinical symptoms and in order to determine the proper time for the surgical closure of the wound, without danger of recurring infection. Apparatus Required. — 1. A fairly strong platinum loop mounted on a glass 63 64 IRRIGATION OF WOUNDS or metal rod; or a swab (iron wire, a small cotton pledget fastened at one end) ; 2. An alcohol lamp or Bunsen burner; 3. Glass slides for the specimens, with labels previously pasted on each side; 4. A slide box for the specimens. Obtaining the Specimens. — The irriga- tion should be suspended for at least two hours before the specimen is taken, so that the secretions shall not be too much di- luted. While the dressings are being removed, the platinum loop should be heated in the flame to a bright red, or a sterile swab should be picked up. The part of the wound is sought for which seems to be most infected (site of necrosis, grayish parts of the wound, small tracts not easily reached by the an- tiseptic, sequestra of bone, etc., etc.) and the platinum loop or the swab is rubbed over its surface so as to remove the secre- tions which cover it. The Smears. — Holding the glass slide, with the label facing up, in the left hand, MICROSCOPICAL EXAMINATION 65 and the platinum loop or cotton swab in the right hand, the wound secretions are spread on the glass slide in as thin a layer as possible. This is accomplished by rub- bing the loop or swab on the slide with a slight rotary movement. The platinum loop is heated to a red heat in the flame before laying it down and the swab is dropped into a receptacle filled with an antiseptic. The name of the wounded person, the number of his bed, and the identification mark of the wound are written on the label. The slides are dried in the air or lightly passed over the flame, and are kept, until examined, in a specimen box. Staining the Slides. — This is done in the laboratory and the following appara- tus is necessary : 1. Alcohol lamp or Bunsen burner; 2. Staining solutions in dropper bottles. We use preferably carbol-thionine ; if this cannot be obtained, a 10 per cent, solution of carbol-fuchsin, methylene blue or gentian violet. 66 IRRIGATION OF WOUNDS Formula for carbol-thionine solution: Thionine I gram Carbolic acid (crystalline) ... I gram Alcohol 95 per cent 10 grams Water ioo " The thionine and the alcohol are tritu- rated in a small mortar, the carbolic acid is then added, and the mixture thoroughly- stirred up. Two-thirds of the water is added little by little, the mixture poured into a bottle with ground glass stopper. The mortar is then washed off with the remaining one-third of the water, which is also emptied into the bottle. After 24 hours the solution is ready for use. A simple solution can be made by mix- ing 10 c.c. of a saturated solution of thionine in 90 per cent, alcohol with 100 c.c. of 1 per cent, solution of carbolic acid in water. 3. Various reagents: absolute alcohol, alcohol-ether, etc. (are not indispensable) ; 4. Wash-bottle or running water; PLATE X A B PlNCHCOCK AND SAFETY-PIN A. — Enlarged view of pinchcock used to regulate the flow of the antiseptic solution. B. — Enlarged view of safety-pin showing method of holding tubes and glass distributors in place. MICROSCOPICAL EXAMINATION 67 5. Glass bowl or some receptacle to re- ceive the waste water; 6. Small squares of filter paper. Preparation of the Specimens. 1. Drying. — The slides are dried imme- diately after preparing them or, what is just as good, are left to dry in the box. 2. Fixing. — The smears must be fixed on the slides so that they do not wash off during the staining. For this purpose fix- ation by heat is the rule. The slide is held at one end, specimen surface up, and is passed fairly rapidly through the flame three times, as in "cutting bread." The slides can also be fixed in a mixture of equal parts of absolute alcohol and ether, by pouring several drops on the smear, and allowing it to evaporate. 3. Staining. (a) Pour enough of the staining fluid (carbol-thionine) on the smear to cover it completely. (b) Let the stain act for a half to one minute. 68 IRRIGATION OF WOUNDS (c) Drain off the stain. (d) Wash rapidly with water either with the wash-bottle or under the tap. (e) Dry in the air. The drying may be hastened by gently heating the slide, or by blotting up the excess of water with a small piece of filter paper. Examination. — Place a drop of cedar oil on the slide. Place the slide on the stage of the mi- croscope and fasten the side with the clips. With the coarse adjustment, lower the oil immersion lens until it comes into con- tact with the cedar oil, about 2 mm. from the slide. Proceed very carefully. Place the eye at the eyepiece, secure sufficient illumination by adjusting the mirror of the microscope. Slowly lower the objective until the ob- ject is seen more or less clearly. Then focus carefully with the fine adjustment until the image stands out sharply. Make the examination. MICROSCOPICAL EXAMINATION 69 Raise the objective (coarse adjust- ment) ; remove the specimen. Clean the objective by wiping it with a piece of fine linen. Preservation of the Specimens. — Re- move the drop of cedar oil from the slide by dissolving it with a few drops of xylol. Allow it to dry. Put the slides away in the slide boxes. Cleaning the Slides. — The slides which are not kept are thrown into a receptacle containing denatured alcohol. They can be used again after they have been cleaned. For that purpose they are removed from the denatured alcohol, drained, and placed in a pan containing a 4 per cent, solution of sodium carbonate (crystals), and are boiled for half an hour. After having cooled off, they are washed in water. Then they are boiled again for half an hour in a 5 per cent, solution of hydro- chloric acid, or in the following solution: 70 IRRIGATION OF WOUNDS Water iooo Potassium bichromate 50 Sulphuric acid 100 Rinse in water, wipe, dry, preserve dry protected from dust, or in alcohol. The Examination of the Slides. — This should be done in a laboratory by trained bacteriological workers. Fundamental Principles. — If a slide stained with carbol-thionine is examined under the microscope, we see the follow- ing: 1. Cells with the nuclei stained violet; there are leucocytes which have only a sin- gle nucleus (mononuclear leucocytes) ; or a nucleus divided into several lobes (poly- nuclear leucocytes). 2. Cellular detritus stained violet. 3. Occasionally large flat cells with a small violet nucleus (cells from the skin). 4. Round bodies stained green (red blood cells). 5. Bacteria stained a deep violet. They occur in two varieties : MICROSCOPICAL EXAMINATION 71 (a) As more or less well marked round spots: cocci; If they occur in pairs: diplococci. In groups of four: tetracocci. If they are grouped in chains, the one following the other: chain cocci (they are generally referred to as streptococci, and are the cause of various kinds of suppura- tions and inflammations). If they appear in clusters : cluster cocci (generally spoken of as staphylococci; very common in most infections). (b) Little rods of varying lengths and sizes, bacilli. These occur singly; in groups of two, diplobacilli, or, when they occur in chains, streptobacilli. Counting the Organisms. — In the smear method, the number of bacteria is of greater importance than the particular variety, as they cannot be positively iden- tified by their morphological characteris- tics. Nevertheless, the bacillus variety nearly always indicates a serious infec- tion. To calculate the number of bacteria 72 IRRIGATION OF WOUNDS it is necessary to count the number in a field of known size. It is customary to take as the unit the microscopic field, that is to say, the round area which one sees in looking through the microscope (mi- croscope with a No. 3 eyepiece and 1/12 oil immersion objective). The estimation of the number of bac- teria found in a series of fields is approxi- mate and can be quickly made when there are many to each field. We class them as : 1. Innumerable; 2. 50 to 100 to the field; 3- 3° to 50 to the field 4. 20 to 30 to the field 5. 15 to 20 to the field 6. 10 to 15 to the field. When there are fewer than 10 to 15 to the field, it is possible to count them ex- actly. The bacteria should be counted in ten successive fields, starting from one point, then in ten other fields starting at a point at some distance from the first, then in a third series of ten fields, and the av- MICROSCOPICAL EXAMINATION 73 erage taken. The results, although purely- relative, will be found to correspond roughly, especially when all the estima- tions are made by the same observer. Clinical Indications Deduced from the Microscopical Examination. — (a). The disinfection should reduce the number of bacteria. If the latter remains stationary for several days or increases, the surgeon should examine the wound and ascertain the reason for the slowing of the disinfec- tion. Insufficient irrigation demands an increase in the number of tubes, a change in their position or removal and reinser- tion. The lack of results may be due to bacterial foci from necrotic tissue, foreign bodies, projectiles, pieces of clothing, bone sequestra, etc., non-irrigated por- tions of the wound, poorly applied dress- ings, mistakes in technic, etc. (b) When the number of bacteria is re- duced to about one to each field, the ex- aminations must be made with especial care on numerous smears which should 74 IRRIGATION OF WOUNDS be taken from different parts of the wound. When only isolated cocci or diplococci are seen, and only one is found in every four or five fields, and if this result has been verified by two or three successive examinations at an interval of one or two days, the disinfection is practically ac- complished. The surgeon may then close the wound with a fair presumption of suc- cess, no matter whether it is a wound of the soft parts or a compound fracture.* Number of Examinations. — At Carrel's hospital the examinations are made regu- larly every other day for all the wounded. In the other hospitals, they are made only every third or fourth day during the period of disinfection, then more fre- * The time varies somewhat, depending on the nature of the case and the severity of the preced- ing infection. Compound infected fracture of thigh, 6 days interval of sterile wound; large wound of soft parts, 3 days; superficial wound of soft parts, 2 days. PLATE XI fame: ■*- JV&rd -^7^ «r^ ttatare ofWeimd. ^5&raa'Uin&- — ; r^ StonfcK. October November 9oy. 2! ZZ 25 27 £3 3» 2 * 6 3É 1 C5d — Go : î. / rs X 40 t : i : ■ i : i 20 j : 1 - 1 10 _ , r t - t : t - r 5 lit! ± : 1 4 2 t ■■ 1 / l 1 jp__z& : 1/9 _ _3 . 1/5 I. J ft 1/in _B 4 A>0 1 , [ » .JL- „ Il -i^J ;___ ^- 7 V-^— Graphic Record of Bacterial Count. ■ -• • MICROSCOPICAL EXAMINATION J7 vjuently as the time approaches for the surgical closure of the wound. Bacterial Curve. — The results are re- corded for the use of the surgeon and en- tered on charts as a graphic bacterial curve. These curves are similar to the temperature charts and show at a glance the course of the infection and the prog- ress of the disinfection {See Plate XI). GLOSSARY ENGLISH TO FRENCH Adhesive plaster. Sparadrop adhesive Bacteriological curve, courbe microbienne Bicarbonate of soda, bicarbonate de soude Carbonate of soda, carbo\ftate de soude Chlorid of lime, Chlorure de chaux Compresses, compresses Conducting connectors, glass, raccords adduc- teurs Conducting tube, tube adducteur Cotton pads, coussins de coton Distributing tubes, small straight glass, petits raccords droits Distributing tubes, tubes distributeurs Distributors, glass, raccords distributeurs Dressings, pasements Flask, ampoule Gloves, rubber, gantes de caoutchouc Hyposulphite of soda, hyposulphite de soude Instillation tubes, tubes distributeurs Microscopic slides, Frottis Necrotic tissue, les tissus sphacilas Nurse, Vinûrmère Pinchcock, pince de Mohr à rassorts Rubber gloves, gantes de caoutchouc Safety-pins, épingles de sûreté 79 80 GLOSSARY Slides, microscopic, frottis Sloughs, les tissus sphacilas Smears, lames Straight glass distributing tubes, small, petits raccords droits Titration, titrage Wounded man, le blessé Wounds, les plaies FRENCH TO ENGLISH Ampoule, flask for fluid Bicarbonate de soude, bicarbonate of soda Blessé, le, wounded man, the Chlorure de chaux, chloride of lime Courbe microbienne, bacteriological curve Carbonate de soude, carbonate of soda Compresses, squares of gauze, single thickness Coussins de coton, pads of gauze with cotton be- tween Epingles de sûreté, safety-pins Frottis, microscopic slides Gantes de coautchouc, rubber gloves Hyposulphite de soude, hyposulphite of soda Infirmière, V, the nurse Lames, smears Pasements, dressings Pince de Mohr à rassort, pinchcock Plaies, les, wounds, the Raccords adducteurs, glass conducting connectors Raccords distributeurs, glass distributors Raccords droits petits, small straight glass dis- tributing tubes Sparadrop adhesive, adhesive plaster GLOSSARY 81 Tissus sphacilas, necrotic tissue or sloughs Titrage, titration Tube adducteur, conducting tube Tubes distributeurs, distributing or instillation tubes, to be placed in wound Metric Equivalents in Inches Meters Inches Millimeter ooi .03937 Centimeter 01 «3937 Meter 1. 39.3685 Metric Equivalents in Troy Weights Grains Grams Grains Grams O.I543 .01 154 323 10 0.7717 05 231 485 15 1-543 1 308 647 20 7.716 5 385 809 25 15-432 I 771 617 50 30.865 2 925 941 60 46.297 3 1080 264 70 61.729 4 1543 235 100 77.162 5 3086 47 200 INDEX Absorbent cotton for tion of, 47, 48; in pre- pads, use of, 23. Acetic acid in testing, use of, 58. Adhesive plaster, for holding dressing, 25 ; for holding tubes, 28. Alcohol as re-agent, ab- solute, 66; for preserva- tion of specimens, de- natured, 69; for fixing slides, absolute, 67; for making thionine, 66. Alcohol-ether as re- agent, 66. Alcohol lamp for stain- ing, use of, 65; in mi- croscopical examination, use of, 64. Alkali, injurious action of caustic, 55. Alkalinity, estimation of, 62. Anhydrous sodium car- bonate vs. crystalline salt, 60. Antiseptic, action on skin, 24; continuous ac- paring slides, use of, 65. Antiseptic solution, pro- tection of skin from, 29. Apparatus, irrigating, 30; sterilization of, 17. Autoclave, sterilization by, 23. Bacilli, 71 ; diplobacilli, 71 ; streptobacilli, 71. Bacteria, 70; cocci, 71; diplococci, 71 ; tetracocci, 71 ; streptococci, 71 ; staphylococci, 71. Bacterial curve, 77. Bacterial foci in necrotic tissue, 73. Bacteriological count, 71. Bandage, use of, 29. Basins, use of sterile, 26. Bed pad, protection of, 51. Bicarbonate of soda, quantity of, 59. Binder, adjustment of, 29; flannel, use of, 25. Boiling, cleansing of slides by, 69. $3 84 INDEX Bottles, use of dropper, 65. Box for slides of speci- mens, 64, 65. Boxes for sterilizing, metal, 24. Bunsen burner in micro- scopical examination, use of, 64; for staining, use of, 65. Burette used for titra- tion, 56. Calcium carbonate, cry- stalline vs. anhydrous, 60. Calcium chlorid, com- mercial, 56; in antisep- tic solution, use of, 56; quantity of, 59; sam- pling of, 57- Calculation of bacterio- logical count, 72, 7Z. Carbol-fuchsin solution for staining, 65. Carbo-thionine for stain- ing slides, 65, 67; form- ula for, 66. Carbo-thionine solution, preparation of, 66. Carbolic acid in carbo- thionine, use of, 66; in making thionine, use of, 66. Carbonate of soda, for cleansing slides, 69; quantity of, 59. Caustic alkali, injurious action of, 55. Caustic soda, indication of presence of, 62 Cells with violet nucleus, flat, 70. Cedar oil from slides, re- moval of, 69. Chlorine, active, 56; con- tent in calcium chlorid, 58. Clamp, 38. Cleansing of apparatus, 41 ; of stained slides, 68. Cleansing solution, formula for, 70. Clinical indications, 73- Closing of wound, 74; time of, 25. Cocci, microscopic find- ings of, 71 ; isolated, 74. Compresses of gauze, de- scription of, 23; use of, 28; use of vaselined, 28; sterile vaseline, 24; preparation of vase- line, 24; see also tam- pons. Conducting connector, Y-shaped glass, 42. Conducting tubes, de- scription of primary, 30; use of primary, 30; INDEX «S secondary, 30; use of secondary, 30 ; connec- tion with rubber, 42. Connectors, glass con- ducting, 37. Connecting tube, attach- ing, 42. Cotton for pads, use of absorbent, 23; for pads, use of non-absorbent, 23 ; to plug flask, sterile, 42. Cotton pads, 23; com- presses held by, 29; de- scription of, 23 ; size of, 23- Cotton pledget in micro- scopical examination, use of, 64. Counting the Organisms, 7h 72, 73- Crystalline sodium car- bonate vs. anhydrous salt, 60. Curve, bacterial, 77. Dakin's solution, 26; for cleansing apparatus, 41 ; irrigation treatment with, 15; mixing of, 60; moistening of com- presses with, 28; prep- aration of, 55, 60; ti- tration of, 61. Daufresne's technic for preparation of solution, 55- Decolorization test, 57. Denatured alcohol, use of, 67. Detritus visible on plates, cell, 70. Diplococci, isolated, 74 ; microscopic findings of, 71. Disinfection, measure of, 73- Distilled water, use of, 57- Distributing tubes, 15 ; connection of rubber, 42; description of, 15, 16; perforated, 16; rôle of, 16; simple, 15; sizes of, 16; varieties of, 15; with connecting tubes, connection of, 37; small glass, 41. Distributors, description of glass, 38. Dressing, antiseptic solu- tion to soak, 48; ma- terials for, 26. Dressing wound, nurse's part in, 26, 27. Dropper bottles, use of, 65. Drying of slides in air, 68; of specimens, 67; of stained slides, 68. 86 INDEX Elevation of flask, 42. Examination of slides, 70. Examinations, number of, 74. Flannel binder, adjust- ment of many-tailed, 29; use of, 25. Flask, description of, 30; setting up of, 42. Filter paper, use of, 67. Fixation by heat, 67. Foci from necrotic tissue, bacterial, 73. Focusing of microscope, 68. Forceps, Kocher's sterile, 26. Fracture of thigh, time interval for examining, 74- Gauze, use of unstarched, 25. Gauze compresses, de- scription of, 27; vase- line, 24. Gentian violet for stain- ing, 65. Gloves, use of rubber, 26. Glass conducting con- nectors, 37. Glass distributors, con- nection of, 47; descrip- tion of, 38. Glass distributing tubes, small, 41. Glass slides in micro- scopical examination, use of, 64. Heat, fixation by 67. Hydrochloric acid for testing, 58; for cleaning slides, 69. Hypochlorite of soda content, 62; in Dakin's Solution, use of, 55. Hypochlorite of sodium, irrigation treatment with, 15; see also Da- kin's Solution. Hypochlorite solution, exposure of, 61; strength of, 55 ; temper- ature of, 61. Hyposulphite of soda, 57; as re-agent, 61; de- colorization by, 58. Indications, clinical, 73. Injection by syringe to test tubes, 41. Infection, examination to determine degree of, 25. "Instillation" tubes, see Distributing Tubes. Iodine solution, 57. INDEX 87 IODID OF POTASSIUM, 57- Irrigation, care to secure free, 48; technic of, 47. Irritation due to strong solution, 56. Javel water, coloration of, 62; injurious action of, 55- Kocher's forceps, 26; in- jurious action of, 55. Labarraque solution, coloration of, 62. Lamp in microscopic ex- amination, use of, 64. Leucocytes, mononuclear, 70; polynuclear, 70; vi- sible on microscopic plates, 70. Linen as covering, use of, 24; for cleaning the objective, use of fine, 69. Linen thread used to close distributing tubes, 16. Metal boxes for steriliz- ing, 24. Methylene blue for staining, 65. Microscope, adjustment of, 68. Microscopic field as counting unit, 72. Microscopic findings, 70. Microscopical examina- tion, purpose of, 63. Mirror of microscope, ad- justment of, 68. Mononuclear leucocytes, 70. Mounting material from smears, 65. Necrosis, smears taken from site of, 64. Necrotic tissue, bacterial foci from, 73; excision of, 27; smears from, 65. Nonabsorbent cotton for pads, use of, 23. Nurse's part in dressing wound, 26, 27. Obstructions in tubes, re- moval of, 48. Pad, compresses held by cotton, 29; sterilization of large, 24; steriliza- tion of small, 23. Paper, white, use as cov- ering, 24. Perforation of walls of tubing, 16. 88 INDEX Permeability of tubes, testing of, 48. Phenolphthalein in al- kalinity test, 62. Pince de Mohr à rassort, 38. PiNCHCocK, 38; use of, 37, 48/ " Pipette in filtration, use of, 57- Plaster, use of adhesive, 25. Platinum loop in micro- scopical examination, use of, 63; used for ob- taining smears, 64. POLYNUCLEAR LEUCOCYTES, 70. Potassium bichromate, cleansing solution con- taining, 70. Potassium iodid, 57; as re-agent, 61. Preparation of Dakin's Solution, 55, 60. Preservation of speci- mens, 69. Quantitative test of cal- cium chlorid, 57. Raccords adducteurs, 37- Raccords distributeurs, 38. Raccords droits, petits, 41. Re-agents used in titra- tion of Dakin's Solu- tion, 61. Rubber gloves, use of, 26. Rubber tubing, examina- tion of, 48; use of, 41. Rubber sheeting for cov- ering bed pad, 51. Safety-pins to hold ap- paratus, 47; to hold cot- ton pad, 29; use of, 25. Scissors, sterile, 26. Secretions, remarks on examination of wound, 25. Sheeting to cover bed pad, rubber, 51. Setting up irrigation ap- paratus, 42. Slides, cleaning of, 69; drying of, 65; examina- tion of, 68, 70; staining of, 65, 67, 69. Sliding carrier on stand, 42. Smear method of count- ing organisms, 71, 72, 73- Smears, 64; collection of necrotic tissue for, 64; fixing of, 67 ; placed up- on slides, necrotic tis- sues from, 65; prepara- tion of, 67. INDEX 89 Soap-suds for cleansing apparatus, 35. Soda, indication of pres- ence of caustic, 62. Soda Solvay, 56. Sodium bicarbonate, quantity of, 59. Sodium carbonate, quan- tity of, 59; use in anti- septic solution, 56. Sodium carbonate solu- tion for cleansing slides, 69. Sodium content, hypo- chlorite of, 62. Sodium hyposulphite, 57; decolorization by, 58. Sodium oleate, cleansing solution of, 27. Solvay soda, 56. Specimens, method of ob- taining, 64; drying of, 67; preparation of, 67; preservation of, 69. Spring clamp, 42. Staining of slides, 65, 67, 69. Staining solutions, use of, 65. Staphylococci, microsco- pic findings of, 71. Stand, attaching of flask to, 42. Sterilization, of cotton pads, method of, 23; of distributing tubes, 23 ; of tampons, 23. Sterilizer, hot air, 24. Streptococci, microscopic findings of, 71. Sulphuric acid, cleansing solution containing, 70. Swab in microscopical ex- amination, use of, 64. Syringe to test tubes, in- jection by, 51. Tampons, description of, 23; see also compresses. Tap water, use of, 60. Tech nic of irrigation, 47- Temperature for steriliza- t i o n of distributing tubes, 23; for steriliza- tion of compresses, 23 ; for sterilization of vase- line compressors, 24; of hydrochlorite solution, 61. Test of calcium chlorid, quantitative, 57. Test tubes used for steril- izing, 23. Tetracocct, microscopic findings of, 71. Thionine in carbo-thion- ine, 66; saturated solu- 9o INDEX tion of, 66; simple solu- tion of, 66. Threads used to close dis- tributing tubes, linen, 16; as guy ropes, 16. Tissues, irritation of, 56. Titration of calcium chlorid, 56; of Dakin's Solution, 60; control of, 61. Tray for dressings, 26. Tube adducteur, 30. Tubes distributeurs, 15. Tubes, insertion of 28; obstruction in, 48; per- meability of, 48. Turkish toweling, cover- ing of distributing tubes by, 16; method of attaching, 16. Vaseline, protection of skin by, 29. Vaseline compresses, preparation of, 24; sterile, 24; use of, 28. Water, use of distilled, 57. Wound, closing of, 74; placing of tubes in, 27; time interval for exam- ining large, 74; time in- terval for examining superficial, 74; time of closing, 25; flushing of, 48. Wound secretions, re- marks on examination of, 25. Wounds, use of toweling in irrigation of flat sur- face, 16; use of towel- ing in irrigation of su- perficial, 16. Xylol, dissolving of cedar oil by, 69. Paul B. Hoebeb, 67-69 East 59TH Street, New York. MEDICAL MONOGRAPHS Published by PAUL B. HOEBER 67^69 East 59th St., New York This catalogue comprises only our own publications. It will be noticed that particular care has been exercised in the selec- tion of Monographs of timely interest. We are always glad to consider the publication of new and original medical works. Correspondence with Authors is invited. ADAM: Asthma and Its Eadical Treatment. By Jamea Adam, m.a., m.d., f.r.c.p.s. Hamilton. Dispensary Aural Surgeon, Glasgow Eoyal Infirmary. 8vo, Cloth, viii+184 Pages, Illustrated $1.50 net. ADLEE: Primary Malignant Growths of the Lungs and Bronchi. By I. Adler, a.m., m.d., Prof. Emeritus New York Polyclinic, Consulting Physician, German, Beth-Israel, Har Moriah, People's and Montefiore Hospitals. 8vo, Cloth, xii-f- 325 Pages, 1 Colored and 16 Halftone Plates $2.50 net. AMEEICAN JOURNAL OF EOENTGENOLOGY, THE. Official Organ of the American Eoentgen Eay Society. Edited by James T. Case, m.d., Battle Creek, Mich. Published monthly. (Volume IV, No. 1. Published January, 1917) $5.00 per year. ANNALS OF MEDICAL HISTOEY. Edited by Francis E. Packard, m.d. Associate Editors: Drs. Harvey Cushing, George Dock, Mortimer Frank, Fielding H. Garrison, Abra- ham Jacobi, Howard A. Kelly, Arnold C. Klebs, Sir William Osier, William Pepper, Lewis S. Pilcher, David Eiesman and Edward C. Streeter. Published quarterly $6.00 per year. 1 2 HOEBER'S MEDICAL MONOGRAPHS AEMSTBONG: I. K. Therapy, with Special Reference to Tuberculosis. By W. E. M. Armstrong, m.a., m.d. Dublin. Bacteriologist to Cent. Lond. Ophthalmic Hosp., Late Asst. in Inoculation Dept., St. Mary's Hosp., Padding, W. 8vo, Cloth, x-L.93 Pages, Illustrated $1.50 net. BACH: Ultra- Violet Light by Means of the Alpine Sun Lamp. By Hugo Bach, m.d., Bad Elster, Germany. Author- ized Transi, from German. 12mo, Cloth, 114 Pages, Illustrated $1.00 net. BABBINGEB, JANEWAY AND FAILLA: Radium Therapy in Cancer at the Memorial Hospital. (See Janeway, Bar- ringer and Failla.) BIGG: Indigestion, Constipation and Liver Disorder. By G. 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