🫘 Kidney Injury Scale (AAST 2018)
UseAbdominal trauma CT reports, alongside the AAST liver and spleen tools.
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SourceKozar RA, et al. J Trauma Acute Care Surg 2018;85:1119-1122
Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Scene next step
📋Trauma resuscitationOpen scene pack →Related scores
Matching pathway
🧭compartment_syndromeOpen pathway →Score + version; reference only — not a substitute for care · no HIS write
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
Clinical takeaway
Take the highest grade.
When to use
Abdominal trauma CT reports, alongside the AAST liver and spleen tools.
How it works
Each finding maps to a grade; take the highest; bilateral injury advances one grade up to III.
Key points
- Take the highest grade.
- Bilateral: +1 up to III.
- Bleeding inside vs beyond Gerota: III vs IV.
- Urinary extravasation = grade IV.
References
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.
| Hematoma / contusion | Subcapsular hematoma and/or contusion without laceration |
|---|---|
| Parenchymal laceration | >1 cm, no collecting system rupture or extravasation |
| Renal pelvis / ureter | None |
| Vascular injury / active bleeding | Segmental renal artery or vein injury |
| Bilateral injury | No |
→AAST kidney gradeGrade IV
- Grade logic：Highest single finding grade IV
- Management cue：High grade: consider angioembolization or surgery if unstable or bleeding; urinary extravasation needs excretory-phase follow-up and possibly stenting.
- Report sentence：Renal injury, AAST 2018 organ injury scale grade IV.
| Hematoma / contusion | Perirenal hematoma confined to Gerota fascia |
|---|---|
| Parenchymal laceration | Shattered kidney, loss of identifiable anatomy |
| Renal pelvis / ureter | Renal pelvis laceration and/or complete UPJ disruption |
| Vascular injury / active bleeding | Devascularized kidney with active bleeding |
| Bilateral injury | Yes |
→AAST kidney gradeGrade V
- Grade logic：Highest single finding grade V
- Management cue：High grade: consider angioembolization or surgery if unstable or bleeding; urinary extravasation needs excretory-phase follow-up and possibly stenting.
- Report sentence：Renal injury, AAST 2018 organ injury scale grade V.
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Kidney Injury Scale (AAST 2018)?
- 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 Kidney Injury Scale (AAST 2018) 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 Kidney Injury Scale (AAST 2018) calculated in practice? Can you show a worked example?
- Inputs: Hematoma / contusion Subcapsular hematoma and/or contusion without laceration, Parenchymal laceration >1 cm, no collecting system rupture or extravasation, Renal pelvis / ureter None, Vascular injury / active bleeding Segmental renal artery or vein injury, Bilateral injury No → Result: AAST kidney grade Grade IV（Grade logic: Highest single finding grade IV, Management cue: High grade: consider angioembolization or surgery if unstable or bleeding; urinary extravasation needs excretory-phase follow-up and possibly stenting., Report sentence: Renal injury, AAST 2018 organ injury scale grade IV.） Inputs: Hematoma / contusion Perirenal hematoma confined to Gerota fascia, Parenchymal laceration Shattered kidney, loss of identifiable anatomy, Renal pelvis / ureter Renal pelvis laceration and/or complete UPJ disruption, Vascular injury / active bleeding Devascularized kidney with active bleeding, Bilateral injury Yes → Result: AAST kidney grade Grade V（Grade logic: Highest single finding grade V, Management cue: High grade: consider angioembolization or surgery if unstable or bleeding; urinary extravasation needs excretory-phase follow-up and possibly stenting., Report sentence: Renal injury, AAST 2018 organ injury scale grade V.）