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Q-1838 · AKI Scheduled review · day 6
A 67-year-old man with diabetic CKD undergoes coronary catheterization. Creatinine was 1.5 mg/dL before the procedure, 1.77 mg/dL two days later. Per KDIGO criteria, which is correct?
Does not meet AKI criteria
Has AKI stage 1
Has AKI stage 2
Has AKI stage 3
Pick an answer →
Answer locked · read any option
AI tutor: [KDIGO staging]
Your answer:
Urine output
Blood urea
Calculated eGFR
AKI stages per KDIGO (2012)
Diagnosis: creatinine rise ≥0.3 mg/dL within 48 hours, or ≥1.5× baseline within 7 days, or urine output <0.5 mL/kg/h for 6 hours.
Stage 1: ≥0.3 mg/dL or 1.5–1.9× baseline, or urine output <0.5 mL/kg/h for 6–12 hours.
Stage 2: 2.0–2.9× baseline, or urine output <0.5 mL/kg/h for ≥12 hours.
Stage 3: ≥3.0× baseline, or creatinine ≥4.0 mg/dL, or initiation of dialysis, or urine output <0.3 mL/kg/h for ≥24 hours, or anuria ≥12 hours.
In this case: a difference of 0.27 mg/dL (under 0.3) and a ratio of 1.18× (under 1.5) — neither creatinine threshold was crossed. Urine output was never given, and without it AKI cannot be ruled out with confidence.
KDIGO CPG for AKI · Section 2.1
17/25
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REFERENCES

  1. 1. Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255. ↗
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  3. 3. Brunmair, M., & Richter, T. (2019). Similarity matters: A meta-analysis of interleaved learning and its moderators. Psychological Bulletin, 145(11), 1029–1052. ↗
  4. 4. Kulik, C.-L. C., Kulik, J. A., & Bangert-Drowns, R. L. (1990). Effectiveness of mastery learning programs: A meta-analysis. Review of Educational Research, 60(2), 265–299. ↗
  5. 5. Metcalfe, J. (2017). Learning from errors. Annual Review of Psychology, 68, 465–489. ↗
  6. 6. Bisra, K., Liu, Q., Nesbit, J. C., Salimi, F., & Winne, P. H. (2018). Inducing self-explanation: A meta-analysis. Educational Psychology Review, 30(3), 703–725. ↗
  7. 7. Gardner-Medwin, A. R. (2006). Confidence-based marking: Towards deeper learning and better exams. In Innovative Assessment in Higher Education. Routledge. ↗
  8. 8. Alfieri, L., Brooks, P. J., Aldrich, N. J., & Tenenbaum, J. M. (2011). Does discovery-based instruction enhance learning? Journal of Educational Psychology, 103(1), 1–18. ↗
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