Aids to obstetrics : double part / by Samuel Nall.

  • Nall, Samuel.
Date:
[1885?]
Catalogue details

Licence: Public Domain Mark

Credit: Aids to obstetrics : double part / by Samuel Nall. Source: Wellcome Collection.

    121/150 (page 117)
    action by means of the blood transfused, and also to replace, in a very slight degree, the blood lost. Difficulty and Dangers.—The great difficulty is the tendency which the blood has to coagulate, and the possible danger is the injection of fibrinous emboli and air into the vein. Pyaemia has occasionally followed. Methods. A. Mediate transfusion from arm to arm (Aveling’s method). This is performed by means of a small valveless Higginson’s syringe having a silver canula at either end. One canula is inserted into the vein of the person supplying the blood, the other into the patient’s vein. The syringe contains about four ounces, and is filled with warm water before injection in order to avoid entrance of air into the veins. This is a good method, though it is rather difficult to manage. B. Injection of Defibrinated Blood.—Eight to ten ounces of blood are taken and stirred with a glass rod; the coagulated fibrin is then got rid of by straining the blood through muslin. The defibrinated blood is injected at a temperature of 100°, with a small ordinary syringe or a small Higginson’s syringe. This method is easy of performance, and the risk of injecting fibrinous emboli is done away with, whilst the essential elements of the blood—the corpuscles—are retained. C. Injection of blood in which coagulation is prevented by the addition of sodium phosphate. The objection to this method is that it increases the amount of fluid to be injected. Whichever method is adopted, the injection should be per- formed slowly, and the effect on the pulse carefully watched. The injection of four to six ounces is generally sufficient to rouse the patient and to cause a return of the pulse and a rise of tem- perature. If the syncope recur, it may be necessary to repeat the operation. The injection should be immediately discon- tinued, if the respiration become embarrassed from admission of air into the vein or from too rapid performance of the operation. Injection of Milk into the vein has been recommended and used for the same object as transfusion of blood.