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Definition of Transfusion reaction
1. Noun. Reaction of the body to a transfusion of blood that is not compatible with its own blood; an adverse reaction can range from fever and hives to renal failure and shock and death.
Medical Definition of Transfusion reaction
1. A reaction to a blood transfusion secondary to some incompatibility in type, RH factor or other surface antigens. May be manifest by haemolytic anaemia, heart failure, and-or renal failure. Symptoms include facial flushing, angioedema, headache, wheezing, anaphylaxis, shock, fever, chills and breathing difficulty. (27 Sep 1997)