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AKI Staging Oliguria — ESENeph MCQ

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EasyAcute Kidney InjuryAKI Staging OliguriaESENeph

A 78-year-old woman is admitted with urosepsis. Baseline creatinine is 95 umol/L. On day 1 her creatinine is 105 umol/L and urine output is 0.4 mL/kg/hr for the past 8 hours. What KDIGO AKI stage is this?

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Correct answer: E — Stage 1

Urine output <0.5 mL/kg/hr for 6-12 hours meets KDIGO criteria for AKI Stage 1, even though the creatinine rise alone (10 umol/L) does not yet meet the creatinine criterion (≥26.5 umol/L within 48h or 1.5x baseline within 7 days). AKI staging uses the worse of the creatinine or urine output criteria.

Reference: KDIGO 2012 – Clinical Practice Guideline for Acute Kidney Injury