ADVERSE REACTIONS TO PLATELET TRANSFUSIONS ARE REDUCED BY USE OF PLATELET CONCENTRATES DERIVED FROM BUFFY COAT

We closely observed 86 transfusions to multitransfused hematologic patients with leukocyte-depleted platelet concentrates (PCs) prepared from buffy coats (BC PCs), filtered either prior to storage (BC1) or after 3-4 days' storage (BC3). The patients were first given, randomly, either BC1 or BC3, and were thereafter used as their own controls by giving them the two BC types alternately. The results were compared with an earlier study on standard platelet-rich plasma (PRP) PCs (46 transfusions to 23 patients) and leukocyte-depleted PRP PCs (23 transfusions to 12 patients). There was no difference in adverse reactions between BC1 and BC3 PCs, but BC PCs caused significantly fewer and milder adverse reactions than PRP PCs. Febrile reactions (FTR) occurred in 4.6%, urticarial skin reactions in 21%, and pulmonary reactions in 0% of BC PC transfusions (17, 29 and 0% of patients). The mean corrected increments (CI) at 16-18 h were higher after BC1 PCs than BC3 PCs (10.3 vs. 8.0, p = 0.046). We conclude that adverse reactions are reduced by use of BC PCs. Prestorage leukocyte depletion may improve platelet increments.