A 60-year-old patient with a history of alcoholic cirrhosis (Child-Pugh score C), diabetes mellitus and ongoing alcohol intake presented to the emergency departed with hypoxemic dyspnoea in the presence of ascites and peripheral edema. Laboratory data indicated acute renal insufficiency with preserved natriuresis (creatinine 3.7 mg/dL, normal 0.71.2; urea 117 mg/dL, normal 10-50; 24 h urine sod...