The purpose of the present study was to compare the 24-hour recovery of red blood cells stored for 9 weeks in a hypoosmolar additive solution containing 150 mM glycerol to cells stored in Adsol®. Seven units of packed red cells were split into 2 aliquots. To one sample, 100 ml of the experimental additive solution(EAS 25) was added, and to the other, 50 ml of Adsol. At the end of the storage period the cells were labeled with 5lCr. A double chromium technique was used to make it possible to perform comparative autologous studies in the same donor. The 24-hour 51 Cr recovery value for EAS 25 was 73.0±(SD) 4.2% and for Adsol 60.9±7.1. At 9 weeks the adenosine triphosphate levels were not significantly better compared to Adsol but the other in vitro measurements were better. New approaches to the study of red cell preservation are suggested.

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1996
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