Table A1.

KDIGO AKI classification.

Stage	Serum Creatinine	Urine Output
1	1.5–1.9-times baseline OR ≥ µmol/ 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 ≥353.9 µmol/L OR renal replacement therapy	<0.3 ml/kg/h for ≥24 h of anuria for ≥12 h