• Miet Schetz.
• Department of Intensive Care Medicine, University Hospital Gasthuisberg, Herestraat 49, Leuven 3000, Belgium. marie.schetz@uz.kuleuven.ac.be
• Best Pract Res Clin Anaesthesiol. 2004 Mar 1; 18 (1): 75-89.

AbstractBecause oliguria is a bad prognostic sign in patients with acute renal failure (ARF), diuretics are often used to increase urine output in patients with or at risk of ARF. From a pathophysiological point of view there are several reasons to expect that loop diuretics also could have a beneficial effect on renal function. However, clinical trials on the prophylactic use of loop diuretics rather point to a deleterious effect on parameters of kidney function. In patients with established ARF loop diuretics have been shown to increase urine output, which may facilitate patient management. A beneficial effect on renal function has, however, not been demonstrated. On the other hand, such an effect cannot be excluded because the available trials lack statistical power. Possible explanations for the absence of a renoprotective effect are discussed. The evidence for a renoprotective effect of mannitol is restricted to the setting of renal transplantation.

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