Intervention: All patients at presentation would be assessed for the underlying cause of and will be managed by removal of all precipitants(careful review of medications, diuretics, nephrotoxic drugs,vasodilators or non-steroidal anti-inflammatory drugs). The second step would be to consider plasma volume expansion in patients with hypovolemia (the choice of fluid could either be a crystalloid or albumin or even blood as indicated) along with identification and early treatment of bacterial infections. Along with this patients with a differential diagnosis of HRS-AKI would be given terlipressin ( or noradrenaline/octreotide midodrine in case of contraindication to terlipressin). Patients with a clinical diagnosis of ATN would be randomized to the on-demand versus protocol-guided dialysis groups. Further, patients with urine output of less than 0.5ml/kg/hour for 4-6 hours despite adequate fluid resuscitation and vasoconstrictors would also be subjected to randomization.