| Popis: |
1.1. Hematologic studies on placental blood revealed that such blood would be desirable for adult transfusion if it could be collected sterilely, in sufficient quantities, and satisfactorily preserved. 2.2. An attermpt was made to confirm the work of previous investigators who claimed placental blood could be adequately collected and preserved and subsequently given as transfusions to adults with a minimal number of reactions. 3.3. By using the usual bacteriologic culture media placental blood could apparently be collected and preserved sterilely, but the subsequent transfusion of these specimens was accompanied by a high percentage of reactions. 4.4. A comparative study of several different preservative solutions indicated that a 1.5 per cent sodium citrate in normal saline is the most desirable solution. 5.5. Further bacteriologic studies, using special culture media, revealed that a high percentage of the collected blood was actually contaminated. Several modifications of the method of collection did not eliminate such contamination. 6.6. Transfusion reactions could not be correlated with bacterial contamination or any other detectable factors such as amount of hemolysis, type of preservative, time of storage, etc. |
