Table 1.

KDIGO 2012 staging criteria for acute kidney injury [19].

Stage	Serum creatinine	Amount of urine produced
1	1.5–1.9 times the initial value; OR ≥ 0.3 mg/dL (26.52 micromoles/L)	<0.5 mL/kg/h for 6–12 h
2	2–2.9 times the initial value	<0.5 mL/kg/hour for ≥12 h
3	≥3 times the initial value; OR ≥ 4.0 mg/dL (353.60 micromoles/L); OR if renal replacement therapy is initiated; OR in patients <18 years, decrease in eGFR to <35 ml/min per 1.73 m2	<0.3 mL/kg/h for ≥24 h OR anuria for ≥12 h