This document defines blood transfusion and discusses its purposes, situations where it is needed, potential reactions, and nursing interventions for reactions. It also classifies different blood products, how they are used, and blood compatibility. Specifically, it states that blood transfusion is a procedure where a patient receives blood products intravenously. Its main purposes are to replace lost blood from injury or surgery, restore oxygen levels, and provide clotting factors. Potential reactions include hemolytic, febrile, allergic, circulatory overload, and sepsis. Nursing interventions depend on the reaction but may include stopping the transfusion and notifying the provider. The document also describes various blood products like packed red blood cells, plasma, platelets, and