A treatise on the science and practice of midwifery . s are too great ever to render this formof operation serviceable. The great objection to most of them is theircost and complexity, and as long as any special apparatus is consideredessential the full benefits to be derived from transfusion are not likelyto be realized. The necessity for employing it arises suddenly; it maybe in a locality in which it is impossible to procure a special instru-ment ; and it would be well if it were understood that transfusion maybe safely and effectually performed by the simplest means. In many THE TRAXSFUSIO
A treatise on the science and practice of midwifery . s are too great ever to render this formof operation serviceable. The great objection to most of them is theircost and complexity, and as long as any special apparatus is consideredessential the full benefits to be derived from transfusion are not likelyto be realized. The necessity for employing it arises suddenly; it maybe in a locality in which it is impossible to procure a special instru-ment ; and it would be well if it were understood that transfusion maybe safely and effectually performed by the simplest means. In many THE TRAXSFUSIOy OF BLOOD. 541 of the successful cases an ordinary syringe was used; in one, in theabsence of other instruments, a childs toy syringe was employed. Ihave myself performed it with a simple syringe purchased at the near-est chemists shop when a special transfusion apparatus failed to act sat-isfactorily. Method of Performing Immediate Transfusion.—In immediate trans-fusion (Fig. 190) the donor is seated close to the patient, and the veins Fig. Method of Transfusion by Avelings Apparatus. in the arms of each having been opened, the silver canula at either endof the instrument is introduced into them (a b). The tube between thebulb and the donor is now pinched (d), so as to form a vacuum, and thebulb becomes filled with blood from the donor. The finger is now-removed so as to compress the distal tube (d), and, the bulb being com-pressed (c), its contents are injected into the patients vein. The bulbis calculated to hold about two drachms, so that the amount injected canbe estimated by the number of times it is emptied. The risk of inject-ing air is prevented by filling the syringe with water, which is injectedbefore the blood. Schafers Directions for Immediate Transfusion.— Procure two glasscanulas of appropriate size and shape (see Fig. 191), and a piece of blackindia-rubber tubing seven inches long and not less than aquarter of an inch bore, fitted to the canulas. This
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
