The mechanisms for diuresis including a) The rbf gfr recovered gradually while the reabsorption function of regenerating immature tubules keep on abnormal b) The high level of metabolic products retained during the oliguria phase resulted in a hyperosmolarity diuretic effect c)The tubular integrity recovered, interstitial edema subsided, the casts to be washed out and the tubular obstruction relieved38 The mechanisms for diuresis including: a) The RBF & GFR recovered gradually while the reabsorption function of regenerating immature tubules keep on abnormal. b) The high level of metabolic products retained during the oliguria phase resulted in a hyperosmolarity diuretic effect. c) The tubular integrity recovered, interstitial edema subsided, the casts to be washed out and the tubular obstruction relieved