Canadian Blood Services' disposition reports suggested considerable variation in cryoprecipitate use and prompted this national audit.
Thirty-one institutions were invited to participate in a 2-month audit. Patient information and relevant laboratory and transfusion data were collected. Cryoprecipitate transfusions were categorized as appropriate if a fibrinogen level (taken 6 hr before/after transfusion) was not more than 1.0 g per L and inappropriate if the pretransfusion fibrinogen level was more than 1.0 g per L and posttransfusion fibrinogen level was more than 1.0 g per L or not performed. Appropriateness was categorized as undetermined if the pretransfusion fibrinogen level was not performed and the posttransfusion fibrinogen level was more than 1.0 g per L or not performed.
Overall, 25 of 31 invited hospitals agreed to participate. A total of 4370 units of cryoprecipitate were transfused in 603 events to 453 patients representing 62 percent of cryoprecipitate issued to hospitals during the time period. Comparison of the number of units of cryoprecipitate per 100 units of red blood cells (RBCs) transfused by each institution showed significant variation in practice (mean, 9 per 100 RBCs; range, 2 to 27 units). The single most common indication for cryoprecipitate was cardiac surgery (45.4% of events). Overall, 24 percent of cryoprecipitate transfusions were considered to be appropriate (pretransfusion fibrinogen level