To preserve blood for transfusion later______________?
Correct answer: D. Add solution of sodium citrate
- A. Dilute with equal volume of 0.9% saline
- B. Add fibrinogen
- C. Add solution of calcium chloride
- D. Add solution of sodium citrate
Explanation
Sodium citrate preserves stored blood by binding ionised calcium, which is necessary for coagulation. Removing available calcium prevents clot formation without damaging the blood cells at appropriate concentrations.
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