🫘 KDIGO Acute Kidney Injury Staging
UseEnter current and baseline creatinine and the worst urine-output criterion; the tool returns the AKI stage (1…
SourceKDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney Int Suppl. 2012.
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
AKI is diagnosed by a creatinine rise ≥26.5 μmol/L within 48h or ≥1.5× baseline within 7 days (original synthesis · not guideline verbatim).
When to use
Enter current and baseline creatinine and the worst urine-output criterion; the tool returns the AKI stage (1–3) taking the most severe component.
How it works
Stage = max of creatinine stage and urine-output stage; dialysis = stage 3. Cr stage 3 if ≥353.6 μmol/L or ≥3× baseline; stage 2 if ≥2×; stage 1 if ≥1.5× or rise ≥26.5 μmol/L.
Key points
- AKI is diagnosed by a creatinine rise ≥26.5 μmol/L within 48h or ≥1.5× baseline within 7 days (original synthesis · not guideline verbatim).
- Establishing an accurate baseline and excluding volume/sampling confounders is essential before staging.
- Urine-output criteria can stage AKI even when creatinine has not yet risen, so both must be tracked.
References
- [Guideline / primary source]KDIGO Clinical Practice Guideline for Acute Kidney Injury. Kidney Int Suppl. 2012.
- [Guideline / primary source]Khwaja A. KDIGO clinical practice guidelines for acute kidney injury. Nephron Clin Pract. 2012.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Current serum creatinine | 180 μmol/L |
|---|---|
| Baseline serum creatinine | 80 μmol/L |
| Urine-output criterion (take the most severe) | <0.5 mL/kg/h for 6–12h |
| Renal replacement therapy (dialysis) started | Yes |
→AKI stageStage 3
- Creatinine ratio：2.25 (scores stage 2)
- Urine-output score：stage 1
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using KDIGO Acute Kidney Injury Staging?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does KDIGO Acute Kidney Injury Staging upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is KDIGO Acute Kidney Injury Staging calculated in practice? Can you show a worked example?
- Inputs: Current serum creatinine 180 μmol/L, Baseline serum creatinine 80 μmol/L, Urine-output criterion (take the most severe) <0.5 mL/kg/h for 6–12h, Renal replacement therapy (dialysis) started Yes → Result: AKI stage Stage 3（Creatinine ratio: 2.25 (scores stage 2), Urine-output score: stage 1）