Table 1 Risk, Injury, Failure, Loss and End-stage Kidney (RIFLE) classification [7].
Class | Glomerular filtration rate criteria | Urine output criteria |
|---|---|---|
Risk | Increased SCreat ×1.5 or GFR decrease >25% | <0.5 ml/kg/hour × 6 hours |
Injury | Increased SCreat ×2 or GFR decrease >50% | <0.5 ml/kg/hour × 12 hours |
Failure | Increased SCreat ×3 or GFR decrease >75% or SCreat ≥ 4 mg/dl | <0.3 ml/kg/hour × 24 hours, or anuria × 12 hours |
Loss | Persistent acute renal failure = complete loss of kidney function > 4 weeks | |
End-stage kidney disease | End-stage kidney disease > 3 months | |