What are ABO compatibility issues related to blood transfusions?

• A. RBCs have antigens that must match between donor and recipient
• B. Transfusion reactions can occur due to mismatched blood types
• C. Both A and B
• D. None of the above

Answer: (C)

ABO compatibility issues are critical in transfusions because they revolve around the presence of specific antigens on the surface of red blood cells (RBCs) and the corresponding antibodies in the recipient's plasma.

When two blood types are incompatible, transfusion can lead to severe immune reactions. The ABO blood group system consists of four main types based on the presence or absence of antigens A and B on the RBCs: type A (A antigens), type B (B antigens), type AB (both A and B antigens), and type O (neither A nor B antigens). If a person receives blood containing antigens that they do not possess, their immune system can recognize these antigens as foreign, leading to the production of antibodies against them.

This can result in transfusion reactions, which may manifest as symptoms ranging from mild (such as fever) to severe (such as hemolysis, where the body destroys the transfused RBCs, which can lead to kidney failure and shock). Recognizing the need for antigen compatibility is essential, as it prevents these adverse reactions and ensures safe transfusions. Therefore, both the matching of RBC antigens and the potential for transfusion reactions are crucial aspects of understanding ABO compatibility in