Shrinivas Bheemrao Somalwar,
BACKGROUND Blood transfusion is the transfusion of whole blood or blood components (packed cells or plasma only) into the blood stream or directly into the bone marrow. 1 It is carried out between individuals with compatible / identical blood groups, failure of which results in adverse transfusion reactions. An ATR (Adverse Transfusion Reaction) is an unfavourable reaction to the transfused blood/ blood component, the severity of which differs from person to person depending on the patient’s susceptibility, degree of incompatibility and the type of reaction. 2
