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Table 1 Kidney disease: improving global outcome (KDIGO) classification for acute kidney injury diagnosis

From: Year in review 2013: Critical Care- nephrology

  Stage 1 Stage 2 Stage 3
KDIGO (2012) ↑sCr ≥0.3 mg/dl (26.5 μmol/l) within 48 hours ↑sCr >2.0-2.9 × baseline sCr ≥ 4.0 mg/dl (353.6 μmol/l)
OR OR OR
1.5-1.9 × baseline within a week UO <0.5 ml/kg/hour for ≥12 hours ↑sCr >3.0 × baseline
OR OR
UO <0.5 ml/kg/hour for 6-12 hours UO <0.3 ml/kg/hour for 24 hours
OR
Anuria for 12 hours
OR
Initiation RRT
OR
In patients <18 years old, ↓ in eGFR to <35 ml/minute/1.73 m2
  1. Up arrows indicate increase; down arrows indicate decrease. eGFR, estimated glomerular filtration rate; RRT, renal replacement therapy; sCr, serum creatinine; UO, urine output.