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Table 1 KDIGO classification of AKI

From: COMMENCE trial (Comparing hypOtherMic teMperaturEs duriNg hemiarCh surgEry): a randomized controlled trial of mild vs moderate hypothermia on patient outcomes in aortic hemiarch surgery with anterograde cerebral perfusion

Stage

Serum creatinine

Urine output

1

1.5–1.9 times baseline

or

≥ 0.3 mg/dl (26.5 μmol/l) increase

< 0.5 ml/kg/h for 6–12 h

2

2.0–2.9 times baseline

< 0.5 ml/kg/h for ≥12 h

3

3.0 times baseline

or

Increase in serum creatinine to ≥ 4 mg/dl (353.6 μmol/l)

or

initiation of renal replacement therapy

<  0.3 ml/kg/hr. for ≥24 h

or

Anuria for ≥ 12 h