Assess urine output hourly for patients at
high risk, using a urine meter for indwelling catheters: • AKIN Stage 1: < 0.5 mL/kg/hr for more than
six hours
• AKIN Stage 2: < 0.5 mL/kg/hr for more than
12 hours
• AKIN Stage 3: < 0.3 mL/kg/hr for 24 hours, or anuria for 12 hours