🧠 Siriraj Stroke Score
UseWhen to use: acute supratentorial stroke in resource-limited settings pending imaging.
Strata> +1 hemorrhage cue; < −1 infarct cue; −1 to +1 equivocal — image.
LimitsWhen not to use: as a substitute for CT/MRI when available. · Pitfall: applying to SAH or brainstem syndromes. · Never delays thrombolysis/ET workup where those pathways exist.
SourcePoungvarin N et al. BMJ 1991 (Siriraj)
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
>+1 ICH cue.
When to use
When to use: acute supratentorial stroke in resource-limited settings pending imaging.
How it works
(2.5×LOC)+(2×vomiting)+(2×headache)+(0.1×DBP)−(3×atheroma)−12.
Key points
- >+1 ICH cue.
- <−1 infarct cue.
- Next: noncontrast CT.
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.
| Level of consciousness | Drowsy / stuporous (1) |
|---|---|
| Vomiting (within 2 h of onset) | No (0) |
| Headache (within 2 h of onset) | No (0) |
| Diastolic BP (mmHg) | 100 |
| Atheroma markers (DM, angina, and/or claudication) | None (0) |
→Siriraj0.5
- Band：Equivocal — CT/MRI required
- Cutoffs：> +1 hemorrhage · < −1 infarct · −1 to +1 equivocal
| Level of consciousness | Alert (0) |
|---|---|
| Vomiting (within 2 h of onset) | No (0) |
| Headache (within 2 h of onset) | No (0) |
| Diastolic BP (mmHg) | 100 |
| Atheroma markers (DM, angina, and/or claudication) | None (0) |
→Siriraj-2
- Band：Suggests infarction (still image when possible)
- Cutoffs：> +1 hemorrhage · < −1 infarct · −1 to +1 equivocal
Verification & sources · governance
FAQ
Frequently asked questions
- Does Siriraj Stroke Score 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 Siriraj Stroke Score calculated in practice? Can you show a worked example?
- Inputs: Level of consciousness Drowsy / stuporous (1), Vomiting (within 2 h of onset) No (0), Headache (within 2 h of onset) No (0), Diastolic BP (mmHg) 100, Atheroma markers (DM, angina, and/or claudication) None (0) → Result: Siriraj 0.5（Band: Equivocal — CT/MRI required, Cutoffs: > +1 hemorrhage · < −1 infarct · −1 to +1 equivocal） Inputs: Level of consciousness Alert (0), Vomiting (within 2 h of onset) No (0), Headache (within 2 h of onset) No (0), Diastolic BP (mmHg) 100, Atheroma markers (DM, angina, and/or claudication) None (0) → Result: Siriraj -2（Band: Suggests infarction (still image when possible), Cutoffs: > +1 hemorrhage · < −1 infarct · −1 to +1 equivocal）