What is the purpose of a major crossmatch before packed red blood cells are issued?
Correct answer: B. To test recipient serum against donor red cells
- A. To test donor serum against recipient urine
- B. To test recipient serum against donor red cells
- C. To measure the patient's clotting time
- D. To determine the donor's platelet count
Explanation
A major crossmatch tests the recipient's serum against donor red cells for antibodies that could cause agglutination or haemolysis. It is different from measuring clotting time or assessing the donor's platelet count.
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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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