Canadian TIA Score

Stratifies emergency-department patients by 7-day risk of stroke or carotid revascularization after a transient ischaemic attack, guiding disposition and urgency of investigation.

First transient ischaemic attack in lifetime

Symptoms lasted 10 minutes or longer

Known history of carotid stenosis

Already on antiplatelet therapy

History of gait disturbance

History of unilateral weakness

History of vertigo (only item that subtracts)

Initial triage diastolic blood pressure (mmHg, 20–200)

Dysarthria or aphasia (history or on examination)

Atrial fibrillation on ECG

Infarction (new or old) on CT

Platelet count (×10⁹/L, 10–2000)

Glucose unit

Serum glucose (in the unit selected above)