Abstract
Blood transfusion recipients are exposed to allogeneic donor leukocytes at the time of transfusion. Exposure to allogeneic donor leukocytes has been linked to a variety of complications of transfusion including primary HLA alloimmunization and platelet refractoriness, febrile nonhemolytic transfusion reactions, transmission of leukotropic viruses, transfusion-associated graft versus host disease, and transfusion-induced immune suppression. The development of high-performance leukodepletion blood filters and of low-leukocyte plateletapheresis machines has provided the technology to reduce recipient exposure to allogeneic donor leukocytes. This article provides a brief review of current information on the utility and shortcomings of these technologies for the prevention of leukocyte-mediated transfusion complications.
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