🧠 ABCD3-I Score (TIA Stroke Risk)
UseWhen to use: TIA clinics with carotid imaging and/or DWI available.
StrataHigher scores → expedite stroke-unit pathways; still assess all TIA urgently.
LimitsWhen not to use: to delay same-day TIA evaluation. · Pitfall: scoring stenosis/DWI without adequate imaging. · ABCD² alone has limited discrimination.
SourceMerwick Á et al. ABCD3-I
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
0–13 total.
When to use
When to use: TIA clinics with carotid imaging and/or DWI available.
How it works
ABCD² (0–7) + dual TIA (+2) + ipsilateral ≥50% stenosis (+2) + DWI lesion (+2) = 0–13.
Key points
- 0–13 total.
- Imaging adds discrimination.
- Next: ABCD² / carotid / DWI.
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.
| Age ≥ 60 | No (0) |
|---|---|
| BP ≥ 140/90 mmHg | No (0) |
| Clinical features | Speech disturbance without weakness (1) |
| Duration | 10–59 min (1) |
| Diabetes | No (0) |
| Dual TIA (another TIA within 7 days) | No (0) |
| Ipsilateral ≥50% carotid stenosis (imaging) | No / unknown (0) |
| Acute DWI lesion (diffusion restriction) | No / not done (0) |
→ABCD3-I2/13
- ABCD² subtotal：2/7
- Cue：Lower published early-risk band
| Age ≥ 60 | No (0) |
|---|---|
| BP ≥ 140/90 mmHg | No (0) |
| Clinical features | Unilateral weakness (2) |
| Duration | ≥ 60 min (2) |
| Diabetes | No (0) |
| Dual TIA (another TIA within 7 days) | No (0) |
| Ipsilateral ≥50% carotid stenosis (imaging) | No / unknown (0) |
| Acute DWI lesion (diffusion restriction) | No / not done (0) |
→ABCD3-I4/13
- ABCD² subtotal：4/7
- Cue：Intermediate — urgent TIA pathway
Verification & sources · governance
FAQ
Frequently asked questions
- Does ABCD3-I Score (TIA Stroke Risk) 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 ABCD3-I Score (TIA Stroke Risk) calculated in practice? Can you show a worked example?
- Inputs: Age ≥ 60 No (0), BP ≥ 140/90 mmHg No (0), Clinical features Speech disturbance without weakness (1), Duration 10–59 min (1), Diabetes No (0), Dual TIA (another TIA within 7 days) No (0), Ipsilateral ≥50% carotid stenosis (imaging) No / unknown (0), Acute DWI lesion (diffusion restriction) No / not done (0) → Result: ABCD3-I 2 /13（ABCD² subtotal: 2/7, Cue: Lower published early-risk band） Inputs: Age ≥ 60 No (0), BP ≥ 140/90 mmHg No (0), Clinical features Unilateral weakness (2), Duration ≥ 60 min (2), Diabetes No (0), Dual TIA (another TIA within 7 days) No (0), Ipsilateral ≥50% carotid stenosis (imaging) No / unknown (0), Acute DWI lesion (diffusion restriction) No / not done (0) → Result: ABCD3-I 4 /13（ABCD² subtotal: 4/7, Cue: Intermediate — urgent TIA pathway）