Canadian TIA Score

Estimate 7-day Risk of Stroke or Carotid Revascularization

Questions

1.First TIA (in lifetime)?

2.Past History of Carotid Stenosis?

3.History of Gait Disturbance?

4.Dysarthria or Aphasia (History or Examination)?

5.History of Vertigo?

6.Symptoms ≥ 10 minutes?

7.Already on Antiplatelet therapy?

8.History of Unilateral Weakness?

9.Initial Triage Diastolic Blood Pressure ≥ 110mmHg?

10.Atrial Fibrillation on ECG (in the emergency department)?

11.Platelet count ≥400 x 10⁹/L (in the emergency department)?

12.Infarction (New or Old) on CT (in the emergency department)?

13.Glucose ≥ 15 mmoL/L (in the emergency department)?

About

The Canadian Transient Ischaemic Score is decision tool stratifies patients’ seven day risk for stroke, with or without carotid endarterectomy/carotid artery stenting, after presenting to the emergency department with a transient ischemic attack.
The score was found to be more accurate than the ABCD² and ABCD²I scores in determining risk for a stroke within 7 days of having a transient ischemic attack.

Scoring system & interpretation

Scores of -3 to 3 = Low Risk (0.5%)
Scores of 4 to 8 = Intermediate Risk (2.3%)
Scores of >8 = High Risk (5.9%)

References

Perry JJ, Sivilotti MLA, Émond M et al.

Prospective validation of Canadian TIA Score and comparison with ABCD2 and ABCD2i for subsequent stroke risk after transient ischaemic attack: multicentre prospective cohort study.

BMJ: British Medical Journal 2021 February 4, 372: n49

The Canadian TIA Score calculator is created by QxMD.

Default Units

1. First TIA (in lifetime)?

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