Table 1 The RIFLE classification
From: Risk factors for renal dysfunction after total hip joint replacement; a retrospective cohort study
GFR criteria | Urine output criteria | |
|---|---|---|
Risk | SCr increased 1.5 times | 0.5 ml(kg h) for 6 h |
Injury | SCr increased 2.0 times | 0.5 ml(kg h) for 12 h |
Failure | SCr increased 3.0 times or creatinine = 355 μmol/l when there was an acute rise of >44 μmol/l | 0.3 ml(kg h) for 24 h or anuria for 12 h |
Loss | Persistent ARF; complete loss of kidney function for >4 weeks | |
End-stage renal disease | End-stage renal disease for >3 months |