Chapter 104

Transfusion Reactions

First published: 04 March 2022
Citations: 1

Summary

Transfusion reactions are most often characterized by their immunologic and nonimmunologic mechanisms. This chapter deals primarily with reactions in dogs and cats. Hemolytic transfusion reactions (HTRs) jeopardize the health of an already compromised patient. An immune-mediated HTR is the result of naturally occurring or induced antibodies present in the recipient plasma, which can destroy donor red blood cells immediately upon transfusion or within hours to weeks following transfusion. Febrile and allergic reactions are two of the most common types of transfusion reactions reported in veterinary medicine, comprising 60–90% of reported reactions. Febrile nonhemolytic transfusion reactions are frequently attributed to recipient alloantibodies which react with histocompatibility leukocyte antigens or other antigens present on donor lymphocytes, granulocytes, or platelets.

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