What type of blood should a patient with a high titer of anti-Jkb antibodies receive?

• A. ABO compatible blood regardless of antigen matching
• B. Only blood that is antigen negative for Jkb
• C. Any O-negative blood in emergency situations
• D. Rh-negative blood only

Answer: (B)

The best choice for a patient with a high titer of anti-Jkb antibodies is to receive blood that is antigen negative for Jkb. This is crucial because the presence of high titers of anti-Jkb antibodies can lead to serious transfusion reactions if the patient is exposed to Jkb-positive red blood cells.

Transfusion reactions occur when the recipient's immune system reacts against the antigens present on the donor's red cells. In this case, if the patient has a high titer of anti-Jkb, the risk of hemolytic transfusion reaction increases significantly if they receive Jkb-positive blood. Therefore, the safest and most effective approach is to provide blood that is antigen negative for Jkb.

While ABO compatibility and Rh-negative status are important considerations in transfusion medicine, the direct match for Jkb antigen status takes precedence for patients with significant antibody titers to prevent adverse reactions.