Acute Kidney Injury Staging

[ Also see Acute Kidney Injury ]


Criteria for AKI
  • Increase in serum creat of ≥ 0.3 mg/dL within 48 hours
    OR
  • Increase in serum creat of ≥ 1.5 times baseline within the prior 7 days
    OR
  • Urine volume < 0.5 mL/kg/hr for more than 6 hours

 

Stage 1 AKI
  • (1.5 - 1.9) x baseline increase in serum creat
    OR
  • ≥ 0.3 mg/dL increase in the serum creat
    OR
  • Urine output < 0.5 mL/kg/hr for 6 to 12 hrs
Stage 2 AKI
  • (2.0 - 2.9) x baseline increase in the serum creat
    OR
  • Urine output < 0.5 mL/kg/hrr for ≥ 12 hours
Stage 3 AKI
  • 3 x baseline increase in the serum creat
    OR
  • Increase in serum creat to ≥ 4.0 mg/dL
    OR
  • Urine output of < 0.3 mL/kg/hr for ≥ 24 hours
    OR
  • Anuria for ≥ 12 hours
    OR
  • Initiation of renal replacement therapy
    OR
  • Decrease in estimated GFR to < 35 mL/min in children < 18 y/o