Table 1.

SCr-based definitions of AKI

ParameterDefinition
Acute Kidney Injury Network2Stage 1: ≥0.3-mg/dl increase or 50% increase over baseline within 48 h
Stage 2: ≥100% increase over baseline (doubling)
Stage 3: ≥200% increase over baseline or 0.5-mg/dl increase to at least 4.0 mg/dl
Acute Dialysis Quality Initiative1RIFLE “R”: ≥50% increase over baseline
RIFLE “I”: ≥100% increase over baseline (doubling)
RIFLE “F”: ≥200% increase over baseline or ≥0.5-mg/dl increase to at least 4.0 mg/dl
Contrast nephropathy9≥0.5-mg/dl increase or 25% increase over baseline
Hou et al.26≥0.5-mg/dl increase if admission SCr ≤1.9 mg/dl
≥1.0-mg/dl increase if admission SCr of 2.0 to 4.9
≥1.5-mg/dl increase if SCr >5.0 mg/dl