A patient typed as weak D positive by a previous facility has now formed anti-D. What is the most appropriate transfusion practice for this patient?
1Transfuse D positive red cells
2Transfuse weak D positive red cells only
3Transfusion is contraindicated
4Transfuse D negative red cells✓ 정답
해설
A patient who forms anti-D must be missing part of the D antigen, which suggests a partial D phenotype. Transfusing D positive red cells to such a patient can cause hemolysis, so D negative red cells should be given from this point on.