Table 4 The Acute Dialysis Quality Initiative (ADQI) criteria for the definition and classification of acute kidney injury (modified RIFLE criteria) [41, 43]
AKI Stage | Serum creatinine criteria | Urine output criteria |
|---|---|---|
1 (Risk) | Increase Scr ≥ 0.3 mg/dL within 48 hours or an increase 150 - 200% (1.5- to 2-fold) from baseline | < 0.5 ml/kg/hour for > 6 hours |
2 (Injury) | Increase Scr 200% to 299% (≥ 2- to 3-fold) from baseline | < 0.5 ml/kg/hour for > 12 hours |
3 (Failure) | Increase Scr ≥ 300% (≥ 3-fold) from baseline or Scr ≥ 4.0 mg/dL with an acute increase of ≥ 0.5 mg/dL or initiation of renal replacement therapy | < 0.3 ml/kg/hour for 24 hours or anuria for 12 hours |