Kidneys from six patients who died soon after open‐heart surgery have been examined. During and after surgery the patients were transfused with ACD‐adenine blood. There were no DOA crystals in the kidneys from five patients who received 13–30 units of blood, corresponding to 8.7‐15.1 mg adenine per kg body weight, and who died within 12 hours after surgery. The sixth patient had an extremely massive transfusion of 118 units (95 mg adenine/kg body weight) administered during 5 days. He died from hemorrhagic shock on the seventh day. He had an impaired renal function and in his kidneys there was a moderate number of birefringent, rosette‐shaped crystals. The use of ACD‐adenine blood is discussed.
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