Furosemide stress test
The urine volume was measured 2 h following administration of a 1 mg/kg intravenous infusion of furosemide (1.5 mg/kg if loop diuretics were used during the previous 7 days) and appropriate fluid resuscitation. FST-responsive if the urine volume was more than 200 mL 2 h after the FST; FST-nonresponsive otherwise [