A previously identified anti-Jka is no longer detectable in a current antibody screen. What is the safest transfusion approach?
1Honor the antibody history and provide Jka-negative, serologically compatible red cells✓ 정답
2Ignore the history because the current screen is negative and transfuse random units
3Provide Jka-positive cells to boost the antibody and monitor for hemolysis
4Use plasma instead of red cells for anemia to avoid antigen exposure
해설
Kidd antibodies can fall below detection yet reappear after antigen exposure and cause delayed hemolytic reactions. A documented clinically significant antibody history must still guide antigen-negative selection.