Our aims to determine the incidence, the causes, the nature and the prognosis of acute renal failure (ARF) in an intensive care unit of Habib Bourguiba's university hospital (Sfax Tunisia).
Patients and methods: We retrospectively included all patients having ARF during a period of one year. Two hundred sixteen patients developed ARF (17%) During the period of study. The causes of ARF were multiple, and dominated by hypovolemia (47% of cases) The Acute renal failure (ARF) is a frequent pathology. It is essentially observed in old patients. The causes are often multiple. The mortality is high and the best treatment remains prophylactic.