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Table 1 Staging of acute kidney injury based on KDIGO Clinical Practice Guidelines for Acute Kidney Injury [ 14 ]

From: Risk factors and outcome analysis after surgical management of ventricular septal rupture complicating acute myocardial infarction: a retrospective analysis

Stage Serum creatinine Urine output
1 1.5–1.9 times baseline <0.5 ml/kg/h for 6–12 hours
OR
≥0.3 mg/dl (≥26.5 mmol/l) increase
2 2.0–2.9 times baseline <0.5 ml/kg/h for ≥12 hours
3 3.0 times baseline <0.3 ml/kg/h for ≥24 hours
OR OR
Increase in serum creatinine to ≥4.0 mg/dl (≥353.6 mmol/l) Anuria for ≥12 hours
OR
Initiation of renal replacement therapy
OR,
In patients <18 years, decrease in eGFR to <35 ml/min per 1.73m2
  1. Adapted from [14]: Improving Global Outcomes (KDIGO) Acute Kidney Injury Work Group. KDIGO Clinical Practice Guideline for Acute Kidney Injury. Section 2: AKI definition. Table 2. Staging of AKI. Kidney International Supplements 2012;2:19. http://www.kdigo.org/clinical_practice_guidelines/pdf/KDIGO%20AKI%20Guideline.pdf.