In blood transfusion, a patient with group AB receives

Analyze the question: It asks which blood groups a patient of group AB can safely receive in a transfusion.

Concept: Blood groups are defined by antigens on the red blood cells and antibodies in the plasma.

| Blood group | Antigens on red cells | Antibodies in plasma | |---|---|---| | A | A | anti-B | | B | B | anti-A | | AB | A and B | none | | O | none | anti-A and anti-B |

Transfusion problems occur when the recipient's plasma antibodies attack the donor's red cell antigens (agglutination).

Solution:

• Group AB has no anti-A or anti-B antibodies in its plasma.
• So the patient's blood cannot attack any donor red cells, whether they carry A, B, both, or neither.
• Group AB is therefore the universal recipient.
• Group AB can receive from O, A, B and AB.

Checking each option:

• A: leaves out O, which is also safe, so it is incomplete.
• B: leaves out AB, so it is incomplete.
• C: leaves out A, so it is incomplete.
• D: includes all four groups, so it is complete.

Answer: The correct option is D (Group O, A, B, AB).

Tip: Remember "AB = All Be accepted", meaning AB receives from all groups. In the same way, O is the universal donor (it gives to all) and AB is the universal recipient (it receives from all).