title: Survival in vivo of platelets stored for 48 hours in the buffycoat at 4 degrees C compared to platelet rich plasma stored at 22 degrees C.
abstract: High speed centrifugation allows separation of whole blood into cell free plasma, a buffy coat and leukocyte poor red cells. The buffy coat can be used for the preparation of platelet concentrates. High lactate production at 22 degrees C requires storage of the buffy coat at 4 degrees C. Survival in vivo of platelet concentrates prepared from buffy coats stored at 4 degrees C for 48 h (BC-PC) was compared with the survival in vivo of platelet concentrates from platelet rich plasma stored at 22 degrees C for 48 h (PRP-PC). Both methods were studied in the same healthy volunteers (n = 8) using 51Cr labeled autologous platelets. The mean +/- SD recovery 15 min after reinfusion of the BC-PC was 30.5% +/- 13.3% and for PRP-PC 41.4% +/- 7.9% (p less than 0.0001). The survival in vivo for BC-PC was 2.4 days +/- 0.4 days and for PRP-PC 7.0 days +/- 1.4 days (p less than 0.0001). Since the survival in vivo is significantly less for platelets derived from the buffy coat stored at 4 degrees C, we advocate storage of platelets at 22 degrees C.
mesh_terms: D000328:Adult; D001792:Blood Platelets / Q000166:cytology* / Q000378:metabolism; D001793:Blood Preservation; D001798:Blood Proteins / Q000502:physiology*; D002469:Cell Separation; D002470:Cell Survival; D002860:Chromium Radioisotopes; D006801:Humans; D008297:Male; D008875:Middle Aged; D017713:Platelet Transfusion; D013696:Temperature; D013997:Time Factors
chemical_list: D001798:Blood Proteins; D002860:Chromium Radioisotopes