Table 1 RIFLE criteria ¹¹⁾

Risk

Increased serum creatinine × 1.5 or GFR decrease > 25%

Urine output < 0.5 ml/kg/h × 6 hr

Injury

Increased serum creatinine × 2 or GFR decrease > 50%

Urine output < 0.5 ml/kg/h × 12 hr

Failure

Increased serum creatinine × 3 or GFR decrease > 75%, serum creatinine ≧ 4 mg/dL (acute rise > 0.5 mg/dL)

Urine output < 0.3 ml/kg/h × 24 hr or Anuria × 12 hr

Loss

Persistent ARF = complete loss of kidney function > 4 weeks

ESKD

End Stage Kidney Disease (>3 months)