I.D.E.A.L.-I.C.U. (Initiation of Dialysis EArly Versus deLayed in Intensive Care Unit)

Exclusion criteria

• ✕. Patients with chronic renal at dialysis.
• ✕. Patients presenting acute renal failure of type obstructive and patients already presenting emergency criteria for immediate hemodialysis at the time of randomization (i.e. hyperkalemia \>6.5 mmol/L or pH\<7.15 or pulmonary oedema by fluid overload)
• ✕. Patients already had hemodialysis before their arrival in the intensive care unit
• ✕. Pregnant women.
• ✕. Moribund patients whose life expectancy is less than 24 hours
• ✕. Patients unlikely to survive to 28 days because of uncontrollable comorbidities (e.g. cardiac, pulmonary or hepatic disease at the terminal stage, hepatorenal syndrome, uncontrolled cancer, severe post-anorexic encephalopathy…)
• ✕. Patients with advance directives indicating their wish not to be resuscitated.
• ✕. Patients under legal guardianship.