Table 9.1-1. Staging of acute kidney injury according to the 2012 KDIGO guidelines

Stage

 Serum creatinine

Urine output

1

Increase 1.5-1.9 × baseline

or

Increase by ≥26.5 micromol/L (≥0.3 mg/dL)

<0.5 mL/kg/h for 6-12 hours

2

2-2.9 × baseline

<0.5 mL/kg/h for ≥12 hours

3

3 × baseline

or

Serum creatinine ≥353.6 micromol/L (≥4.0 mg/d)

or

Initiation of RRT

<0.3 mL/kg/h for ≥24 hours

or

Anuria for ≥12 hours

Based on: Kidney Disease: Improving Global Outcomes (KDIGO) Acute Kidney Injury Work Group. KDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney Inter., Suppl. 2012; 2: 1-138.

KDIGO, Kidney Disease: Improving Global Outcomes; RRT, renal replacement therapy.