If only one ABO determination is on file, what is the safest approach for red blood cell transfusion?

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Multiple Choice

If only one ABO determination is on file, what is the safest approach for red blood cell transfusion?

Explanation:
In this scenario the key idea is minimizing ABO incompatibility risk when complete ABO verification isn’t available. Type O negative red blood cells lack A and B antigens and are Rh negative, making them compatible with nearly any recipient in a hurry. Transfusing O negative cells buys time to confirm the patient’s ABO status with a full type and screen or crossmatch, without exposing the patient to a high risk of an acute hemolytic reaction. Waiting for ABO confirmation could delay needed transfusion and worsen outcomes in a patient who needs blood now. Giving AB positive cells would risk an ABO-incompatible transfusion if the recipient isn’t AB. Using a donor with the same ABO isn’t reliable when only one ABO determination exists on file, so it doesn’t guarantee compatibility.

In this scenario the key idea is minimizing ABO incompatibility risk when complete ABO verification isn’t available. Type O negative red blood cells lack A and B antigens and are Rh negative, making them compatible with nearly any recipient in a hurry. Transfusing O negative cells buys time to confirm the patient’s ABO status with a full type and screen or crossmatch, without exposing the patient to a high risk of an acute hemolytic reaction.

Waiting for ABO confirmation could delay needed transfusion and worsen outcomes in a patient who needs blood now. Giving AB positive cells would risk an ABO-incompatible transfusion if the recipient isn’t AB. Using a donor with the same ABO isn’t reliable when only one ABO determination exists on file, so it doesn’t guarantee compatibility.

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