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A condition in which the kidneys suddenly can't filter waste from the blood.

Acute renal failure develops rapidly over a few hours or days. It may be fatal. It's most common in those who are critically ill and already hospitalised

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Acute renal failure is caused as a result of the rapid fall in the rate of glomerular filtration, which manifests clinically as an abrupt and sustained increase in the serum levels of urea and creatinine with an associated disruption of salt and water homeostasis.