Interstitial Nephritis with Acute Renal Failure Following Cardiac Surgery and Treatment with Methicillin

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Abstract
Six patients developed acute renal failure 13–19 days after cardiac surgery with extracorporeal circulation. None of the patients had suffered from postoperative hypotension; slight hemolysis was present for only 1–2 days postoperatively. Acute renal failure lasted for 11–80 days in four patients. In two patients creatinine clearance stabilized at reduced values. Seven renal biopsies from the six patients showed severe acute interstitial nephritis with mononuclear cellular infiltration and distal tubular damage. No immune deposits were detected in glomeruli or tubular basement membrane. All six patients had been treated prophylactically with methicillin and the acute renal disease was probably elicited by this drug.