Table 2.

Criteria for kidney injury

Risk (R)	Serum creatinine increased ≥1.5X over baseline
Injury (I)	Serum creatinine increased ≥2X over baseline
Failure (F)	Serum creatinine increased ≥3X over baseline
Loss (L)	Loss of renal function >4 wk
End-stage renal     disease (E)	Loss of renal function >3 mo