Many things: The person receiving blood may react to the blood or the tranfusion process. This may be as simple as fever or rash, or may involve antibodies reacting to proteins in the blood being transfused.
Answered 5/26/2014
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Google: Fever chills and so on red blood cells are destroyed by the patient's immune system.
Answered 9/28/2016
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Immunologic or not: Causes for transfusion reactions may be immune related or not, also they can be acute (less than 24 hours) or delayed. These are some: hemolytic; febrile, non-hemolytic; bacterial contamination (septic shock); anaphylaxis; transfusion-related acute lung injury (trali); transfusion-associated circulatory overload (taco); graft vs. Host disease (ta-gvhd); iron overload; infections.
Answered 12/30/2014
4.6k views
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