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Successful storage of RBCs for 9 weeks in a new additive solution
1Blood Research Detachment, Walter Reed Army Institute of Research, Washington, DC 20307-5100, USA. John.Hess@AMEDD.Army.Mil
Background:
This study explored the effect of storing packed RBCs suspended in 200 mL of an alkaline, hypotonic, experimental additive solution (EAS 61).
Study Design And Methods:
Packed RBC units prepared from RBCs collected from healthy donors in CPD were stored for 8 (n = 10) and 9 (n = 10) weeks under blood bank conditions after the addition of 200 mL of EAS 61 (adenine, 2 mM:; dextrose, 110 mM:; mannitol, 55 mM:; NaCl, 26 mM:; Na(2)HPO(4), 12 mM:). Standard methods were used for in vitro assays. The 24-hour in vivo autologous recoveries were measured with (51)Cr.
Results:
Mean +/- SD recoveries at 8 and 9 weeks were 81 +/- 7 and 77 +/- 7 percent. After 9 weeks, the ATP of the RBCs was 81 percent of the initial value, hemolysis was 0.35 percent, supernatant potassium was 46 mEq per L, and the morphologic index was 94.1.
Conclusion:
Packed RBCs suspended in 200 mL of EAS 61 can be stored satisfactorily for 9 weeks. Longer RBC storage should reduce outdating, increase availability of transfusions in remote locations, and improve the efficiency of autologous donor programs.
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