Estimates 2-day and 7-day stroke risk following transient ischaemic attack
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ABCD² Score / 7
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2-Day Stroke Risk
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7-Day Stroke Risk
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BP Score
ABCD² Risk Stratification
Score
Risk
2-Day Stroke
7-Day Stroke
Action
0–3
Low
1.0%
1.2%
Urgent outpatient evaluation
4–5
Moderate
4.1%
5.9%
Consider hospitalisation
6–7
High
8.1%
11.7%
Hospitalise; urgent workup
A: Age ≥60 = 1 | B: SBP ≥140 or DBP ≥90 = 1 | C: Features (see above) | D: Duration | D2: Diabetes Total = A + B + C + D + D2 (range 0–7)
Key Point: All TIA patients warrant urgent evaluation regardless of ABCD² score. High-risk patients (score ≥4) should be hospitalised. Score validates only initial TIA risk — does not apply to recurrent events or minor stroke.
For clinical decision support only. Not a substitute for professional medical judgment.
