PMID: 15373546Sep 18, 2004Paper

Significance of platelet-reactive antibody screening for patients facing frequent platelet transfusions

Immunohematology
T TasakiK Yamamoto

Abstract

It is not clear whether platelet-reactive antibody screening is clinically significant for patients facing frequent platelet transfusions. On the basis of data from 96 patients who had been examined for platelet-reactive antibodies by the mixed passive hemagglutination method for a variety of reasons, we investigated the following three issues retrospectively: (1) the relationship between platelet-reactive antibodies and the occurrence of problems in platelet transfusions, such as refractoriness or nonhemolytic reactions; (2) the influence of a history of transfusion on the production of those antibodies; and (3) the effect of screening for those antibodies on the prompt administration of appropriate platelet components. More than half of the platelet transfusion-related problems were associated with platelet-reactive antibodies. For patients with a history of transfusion, the mean period before a clinical problem occurred with platelet transfusions was 9 days,compared with 66 days for those without such a history. Accordingly, during the period, patients with a history of transfusions received fewer units of platelets and had fewer donor exposures than did patients without such a history. On the other hand, most patients who h...Continue Reading

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