An<unk>  (AHTR), also called immediate hemolytic<unk><unk> , is a life-threatening<unk>  to receiving a blood<unk> . AHTRs occur within 24 hours of the<unk>  and can be triggered by a few milliliters of blood. The<unk>  is triggered by host antibodies destroying donor red blood cells. AHTR typically occurs when there is an ABO blood group incompatibility, and is most severe when type A donor blood is given to a type O recipient.
Acute hemolytic transfusion reaction
Delayed hemolytic transfusion reaction
Post-transfusion purpura
Transfusion-dependent anemia
Transfusion associated circulatory overload
Hypotensive transfusion reaction
Allergic transfusion reaction
Atypical hemolytic uremic syndrome