Table 1 Risk, Injury, Failure, Loss and End-stage Kidney (RIFLE) classification [2]
Class | Serum creatinine criteria | Urine output criteria |
|---|---|---|
Risk | ↑ SCr ≥1.5 × from baseline | <0.5 ml/kg/h ≥6 h |
Injury | ↑ SCr ≥2 × from baseline | <0.5 ml/kg/h ≥12 h |
Failure | ↑ SCr ≥3 × from baseline or an acute ↑ SCr ≥44 μmol/l from baseline SCr ≥354 μmol/l | <0.3 ml/kg/h ≥24 h or anuria ≥12 h |
Loss | Complete loss of kidney function >4 weeks | |
End-stage | End-stage kidney disease >3 months | |