Stage | Estimated clearance plasma creatinine | Diuresis |
Risk | Reduced to >25% | <0.5 ml/kg/h since 8 h |
Injury | Reduced to >50% | <0.5 ml/kg/h since 16 h |
Failure | Reduced to >75% or <35/ml/min/1.73 m2 | <0.3 ml/kg/h during 24 h or anuria since 12 h |
Loss | Persisting failure >4 weeks | - |
End stage | Persisting failure >3 months | - |