Ten Days After a 2-Unit RBC Transfusion,a Patient Experienced a 2

question 7

Multiple Choice

Ten days after a 2-unit RBC transfusion,a patient experienced a 2 g/dL drop in hemoglobin and appeared slightly jaundiced.No evidence of bleeding was observed.What tests would be helpful in determining whether the patient is experiencing a delayed hemolytic transfusion reaction?

• A) Culture the donor unit.
• B) Compare pretransfusion and posttransfusion ABO and D typing.
• C) Perform hepatitis B surface antigen test.
• D) Perform an antibody screen and DAT on the current posttransfusion sample.

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