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Perry 2021 Canadian TIA Score Calculator
x402
Perry 2021 Canadian TIA Score Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Calculates the Perry 2021 Canadian TIA score (Table 1) to stratify 7-day risk of stroke or carotid revascularization after a transient ischemic attack
Price / call$0.005
Success—
StatusUnknown
How this service works
Perry 2021 Canadian TIA Score (Table 1) for 7-day stroke or carotid revascularization after TIA. Clinical: first TIA 2, symptoms >=10 min 2, past carotid stenosis 2, antiplatelet 3, gait 1, unilateral weakness 1, vertigo -3, diastolic >=110 3, dysarthria/aphasia 1. Investigations: AF on ECG 2, infarct on CT 1, platelets >=400 2, glucose >=15 mmol/L 3. Age required, 0 points. Total -3 to 23. Bands <=3 low (0.5%), 4-8 medium (2.3%), >=9 high (5.9%). Not ABCD2. Not a diagnosis or admit order.
Output
Returns the total Perry 2021 Canadian TIA score (range -3 to 23), individual item scores, and a risk band classification: low (≤3, ~0.5% 7-day risk), medium (4–8, ~2.3%), or high (≥9, ~5.9%) for stroke or carotid revascularization
Example use cases
ED triage after first TIA event
“Score this patient who just had their first TIA: 68 years old, symptoms lasted 12 minutes, known carotid stenosis, not on antiplatelet, no gait issues, unilateral weakness present, no vertigo, diastolic BP 108, no dysarthria, no AF on ECG, no CT infarct, platelets 410, glucose 10 mmol/L — what is their Canadian TIA score and risk band?”
High-risk TIA patient identification
“I need the Perry 2021 Canadian TIA score for a 80-year-old: first TIA yes, symptoms ≥10 min yes, carotid stenosis yes, on antiplatelet yes, gait disturbance yes, unilateral weakness yes, vertigo no, diastolic 115 mmHg, dysarthria yes, AF on ECG yes, infarct on CT yes, platelets 420, glucose 16.5 mmol/L — is this patient high risk?”
Low-risk TIA discharge decision support
“Can you run the Canadian TIA score for a 55-year-old whose first TIA symptoms lasted 8 minutes, no carotid stenosis, not on antiplatelet, no gait disturbance, no unilateral weakness, vertigo present, diastolic 95 mmHg, no dysarthria or aphasia, no AF on ECG, no infarct on CT, platelets 300, glucose 6 mmol/L?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/canadian_tiaWhen to prefer
Use this endpoint when you need to apply the Perry 2021 Canadian TIA score specifically (Table 1 version), which differs from the older ABCD2 score. Prefer this over ABCD2-based tools when you have ECG, CT, and lab results available (AF, infarct, platelets, glucose), as the Canadian TIA score incorporates investigation findings for superior risk stratification in an adult emergency department context.
Side effects
- Missing required query parameters returns a validation error
- Both glucose_mmol_l and glucose_mg_dl provided simultaneously returns an error
- Age outside 18–120 range returns a validation error
- Diastolic BP outside 20–160 mmHg returns a validation error
- Platelet count outside valid range returns a validation error
- Glucose outside valid range (2.8–55.5 mmol/L or 50–1000 mg/dL) returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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