In renal failure diuretic phase occur on -

Oliguric (anuric) phase: Urine output decreases from renal tubule damage. 3. Diuretic phase: The kidneys try to heal and urine output increases, but tubule scarring and damage occur occurs in 14-20 days.. Recovery phase: Tubular edema resolves and renal function improves. Ref Harrison20th edition pg 288