Which of the following is not a side effect of blood transfusion: September 2009
Correct Answer: Hypokalemia
Description: Ans. A: Hypokalemia Nonimmunologic adverse reactions to blood transfusion: Citrate toxicity: Citrate is the anticoagulant used in blood products. It is usually rapidly metabolised by the liver. Rapid administration of large quantities of stored blood may cause hypocalcaemia and hypomagnesaemia when citrate binds calcium and magnesium. This can result in myocardial depression or coagulopathy. Patients most at risk are those with liver dysfunction or neonates with immature liver function having rapid large volume transfusion. Potassium Effects: Stored red cells leak potassium propoionately throughout their storage life. Irradiation of red cells increases the rate of potassium leakage. Clinically significant hyperkalaemia can occur during rapid, large volume transfusion of older red cell units in small infants and children Iron accumulation: Iron accumulation is a predictable consequence of chronic RBC transfusion. Organ toxicity begins when reticuloendothelial sites of iron storage become saturated. Liver and endocrine dysfunction creates significant morbidity and the most serious complication is cardiotoxicity which causes arrhythmias, and congestive hea failure.
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