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  • Title: A case report of transfusion-related acute lung injury during plasma exchange therapy for thrombotic thrombocytopenia purpura.
    Author: P'ng SS, Hughes AS, Cooney JP.
    Journal: Ther Apher Dial; 2008 Feb; 12(1):78-81. PubMed ID: 18257817.
    Abstract:
    Transfusion-related acute lung injury (TRALI) is a transfusion reaction that is often under recognized and underreported. Implications for diagnosis not only influence treatment considerations but also extend to donor selection, donor deferral and ultimately the safety of the final blood product. We report a case of a previously well 19-year-old female who presented a one week history of flu-like symptoms and mucosal bleeding. Laboratory results confirmed the diagnosis of thrombotic thrombocytopaenia purpura (TTP) and she was commenced on plasma exchange. During her second day of plasma exchange, she developed dyspnoea and rigors. Examination and investigation findings were consistent with a clinical diagnosis of TRALI. Granulocytes immunofluorescent test (GIFT - flow cytometry) was performed and cross reactivity was demonstrated between the patient's granulocytes and plasma from one of the nine donor fresh frozen plasma (FFP) packs. She made a full recovery. TRALIa accounts for 7% of all adverse events reported in the Serious Hazards of Transfusion (SHOT) database and has a mortality rate between 5-25%. Apheresis patients are a particularly vulnerable group of patients where clinical recognition and rapid laboratory confirmation of TRALI is imperative to minimize the risk of further patient exposure to donor granulocyte or human leukocyte antigen (HLA) antibodies. The provision of plasma from male donors may additionally reduce exposure. On a wider scale, rapid donor identification and deferral maintains the safety of the national blood supply.
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