🧠 Canadian TIA Score
UseWhen to use: ED TIA/minor stroke with basic labs/ECG/CT available.
Strata−3–3 low; 4–8 medium; ≥9 high for 7-day stroke/CEA-CAS band.
LimitsWhen not to use: to defer secondary prevention. · Pitfall: incomplete ED workup items. · Still image vessels urgently in medium/high bands.
SourcePerry JJ et al. Canadian TIA Score (BMJ validation)
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — 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
−3 to 23.
When to use
When to use: ED TIA/minor stroke with basic labs/ECG/CT available.
How it works
Weighted clinical + ECG/CT/labs items; range −3 to 23.
Key points
- −3 to 23.
- ≥9 high band.
- Next: vessel imaging / stroke clinic.
References
- Perry JJ et al. Canadian TIA Score (BMJ validation)
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.
| First TIA in lifetime | No (0) |
|---|---|
| Symptoms ≥10 minutes | No (0) |
| History of carotid stenosis | No (0) |
| Already on antiplatelet therapy | No (0) |
| History of gait disturbance | No (0) |
| History of unilateral weakness | No (0) |
| History of vertigo | No (0) |
| Initial triage DBP ≥110 mmHg | No (0) |
| Dysarthria or aphasia (history or exam) | No (0) |
| AF on ECG | No (0) |
| Infarction (new or old) on CT | No (0) |
| Platelets ≥400×10⁹/L | No (0) |
| Glucose ≥15 mmol/L (270 mg/dL) | No (0) |
→Canadian TIA0(-3 to 23)
- 7-day risk band：Low (~0.5% 7-day stroke/CEA-CAS band in validation)
| First TIA in lifetime | Yes (+2) |
|---|---|
| Symptoms ≥10 minutes | Yes (+2) |
| History of carotid stenosis | Yes (+2) |
| Already on antiplatelet therapy | Yes (+3) |
| History of gait disturbance | Yes (+1) |
| History of unilateral weakness | Yes (+1) |
| History of vertigo | Yes (−3) |
| Initial triage DBP ≥110 mmHg | Yes (+3) |
| Dysarthria or aphasia (history or exam) | Yes (+1) |
| AF on ECG | Yes (+2) |
| Infarction (new or old) on CT | Yes (+1) |
| Platelets ≥400×10⁹/L | Yes (+2) |
| Glucose ≥15 mmol/L (270 mg/dL) | Yes (+3) |
→Canadian TIA20(-3 to 23)
- 7-day risk band：High (~5.9%) — same-visit stroke specialist / urgent pathway
Verification & sources · governance
FAQ
Frequently asked questions
- Does Canadian TIA 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 Canadian TIA Score calculated in practice? Can you show a worked example?
- Inputs: First TIA in lifetime No (0), Symptoms ≥10 minutes No (0), History of carotid stenosis No (0), Already on antiplatelet therapy No (0), History of gait disturbance No (0), History of unilateral weakness No (0), History of vertigo No (0), Initial triage DBP ≥110 mmHg No (0)… → Result: Canadian TIA 0 (-3 to 23)（7-day risk band: Low (~0.5% 7-day stroke/CEA-CAS band in validation)） Inputs: First TIA in lifetime Yes (+2), Symptoms ≥10 minutes Yes (+2), History of carotid stenosis Yes (+2), Already on antiplatelet therapy Yes (+3), History of gait disturbance Yes (+1), History of unilateral weakness Yes (+1), History of vertigo Yes (−3), Initial triage DBP ≥110 mmHg Yes (+3)… → Result: Canadian TIA 20 (-3 to 23)（7-day risk band: High (~5.9%) — same-visit stroke specialist / urgent pathway）