A patient needs urgent packed red cells, but the blood group is not yet known. Which donor red-cell group is generally selected initially?
Correct answer: D. O negative
- A. AB positive
- B. A positive
- C. B negative
- D. O negative
Explanation
O negative red cells lack A, B, and Rh D antigens and are generally used when emergency red-cell transfusion is needed before compatibility testing is complete. Group-specific or crossmatched blood should be used as soon as it becomes available.
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About IV Fluids and Blood Transfusion
IV therapy covers crystalloid and colloid fluids, electrolyte replacement, maintenance and resuscitation fluids, infusion equipment and complications such as infiltration, phlebitis, fluid overload and electrolyte imbalance. Blood transfusion content includes compatibility, cross matching, administration precautions and recognition of haemolytic, febrile and allergic reactions, distinct from ordinary IV fluid reactions.
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