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  • Title: Coagulation factors and inhibitors in thawed plasma stored at 1-6 °C for 5 days in China.
    Author: Wang Z, Du X, Li C, Ma L, Sun P, Cao H, Lin F, Ye S, Xiao X.
    Journal: Transfus Apher Sci; 2014 Apr; 50(2):274-80. PubMed ID: 24472665.
    Abstract:
    INTRODUCTION: Many transfusion services are keeping thawed plasma (TP) ready for trauma patients. According to Chinese guidelines, once thawed, fresh frozen plasma (FFP) should be used within 24h. This may increase plasma wastage and delay plasma administration to critical patients. However, it can be avoided by being relabeled as TP. In this study we evaluated coagulation-related proteins in thawed apheresis FFP during 5 days of storage at 1-6 °C. MATERIALS AND METHODS: Thirty apheresis fresh plasma units were aliquot and stored at -70 °C. Aliquots were thawed at 37 °C and stored at 1-6 °C for 0, 1, 2, 3, 4 and 5 days, respectively. Prothrombin time (PT), activated partial thromboplastin time (aPTT), thrombin time (TT), fibrinogen (Fbg), factor (F) II, FV, FVII, FVIII, FIX, FX, FXI, FXII, protein C (PC), protein S (PS), antithrombin III (ATIII) and ADAMTS13 levels were assessed at Days 0-5, respectively. RESULTS: For 5 days of refrigerated storage, no significant differences were observed in Fbg, PC, PS, ATIII and ADAMTS13. FII, FV, FVII, FVIII, FIX, FX, FXI and FXII declined significantly over time. The storage presented major decrease for FVIII, with a drop of 40%. However, at least 60% levels of all measured proteins were remained on Day 5, when compared to Day 0. CONCLUSION: All measured proteins in TP for 5 days of refrigerated storage were adequate. These could provide evidence that thawed FFP could be relabeled as TP, which is a potential to ensure rapid plasma availability in emergency situations in China.
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