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Table 1 Kidney Disease Improving Global Outcomes (KDIGO) definition of AKI

From: Improving prevention, early recognition and management of acute kidney injury after major surgery: results of a planning meeting with multidisciplinary stakeholders

Stage Serum creatinine Urine output
1 1.5–1.9 times baseline or ≥26.5 μmol/L increase <0.5 ml/kg/h for 6–12 hours
2 2.0–2.9 times baseline <0.5 ml/kg/h for ≥12 hours
3 3.0 times baseline or increase to ≥353.6 μmol/L or initiation of renal replacement therapy <0.3 ml/kg/h for ≥24 hours or anuria for ≥12 hours
  1. Abbreviation: AKI Acute kidney injury.