<qa>  What is the resolution of renal failure often relatively late?Virtually all intensive care IC patients with prolonged IC stay have multiple organ dysfunction syndrome. Frequently renal failure is present. The resolution of renal failure is often relatively late. After cessation of hemofiltration, oliguria may be present, at least for some time. Increasing diuresis by diuretics will probably increase clearance. As a result, intensive care stay and outcome may improve. However, diuretics might also be harmful as it is when applied in developing renal failure. 