• A Lee, M G Cooper, J C Craig, J F Knight, and J P Keneally.
• Department of Anaesthesia, Royal Alexandra Hospital for Children, Sydney, New South Wales, Australia.
• Anaesth Intensive Care. 1999 Dec 1; 27 (6): 574-80.

AbstractThe aim of this systematic review was to assess the effects of nonsteroidal anti-inflammatory drugs (NSAIDs) on post-operative renal function. Eight randomized placebo-controlled double-blinded trials (n = 345) were identified from searches of MEDLINE, EMBASE and the Cochrane Controlled Trials Register databases. The summary effect size and 95% confidence intervals (95% CI) were calculated by a weighted mean difference analysis using a random-effects model. The NSAIDs (diclofenac, ketorolac, indomethacin, ibuprofen) were used for up to three-days after surgery. There were no reported cases of postoperative renal failure requiring dialysis. NSAIDs reduced creatinine clearance by 22 ml.min-1 (95% CI: 7 to 37), sodium output by 54 mmol.day-1 (95% CI: 5 to 103) and potassium output by 38 mmol.day-1 (95% CI: 19 to 56) on Day 1 but not on Day 2. Serum creatinine increased on Day 2 by 15 mumol.l-1 (95% CI: 2 to 28). Urine volume did not change significantly at any time. There was therefore a clinically unimportant transient reduction in renal function. NSAIDs should not be withheld from patients with normal preoperative renal function because of concerns about postoperative renal impairment.

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