Abstract
AABB standards state that cryoprecipitate should be transfused within 4 to 6 hours after thawing. We evaluated coagulation factor levels and sterility of thawed pooled cryoprecipitate to assess whether shelf life can be safely extended. Donor cryoprecipitate pools (n = 20, 10 group A, 10 group O) were held at ambient temperature and sampled at 0, 4, 8, 24, 48, 72, 96, and 120 hours post-thawing for fibrinogen, Factor (F)VIII, and von Willebrand factor (vWF) levels. Samples were tested at 0 and 120 hours for sterility (BacT/Alert system). Sixty additional cryoprecipitate pools were evaluated after 72 hours. Longitudinal differences in component levels were determined by linear fixed-effects regression. Group O cryoprecipitate had significantly lower FVIII (p = 0.002) and vWF activity (p = 0.006) compared to group A at 0 hours, but were not statistically different in fibrinogen levels (p = 0.33). Fibrinogen levels were stable over 5 days: 501 ± 81 mg/unit (mean ± standard deviation) at 0 hours to 506 ± 102 mg/unit at 120 hours (p = 0.73). Similarly, there was no decline in vWF activity: 200 ± 53 IU/unit at 0 hours to 209 ± 57 IU/unit at 120 hours (p = 0.084). The FVIII activity significantly declined on average by 9.6 IU (95% con...Continue Reading
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Feb 6, 2019·Transfusion·Melissa M CushingThorsten Haas
Apr 14, 2019·Transfusion·Joshua L FendersonAndrew P Cap
May 24, 2020·American Journal of Clinical Pathology·Robert L KruseEric A Gehrie
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