ABCD2 Score (TIA stroke risk)
ABCD2 Score (TIA stroke risk) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
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What this is
Compute the ABCD2 score for early stroke risk after transient ischemic attack (Johnston Lancet 2007): Age >=60, Blood pressure >=140/90, Clinical features (unilateral weakness, speech disturbance), Duration (>=60 min, 10-59 min, <10 min), and Diabetes. Sophie Well returns the 0-7 total and the published 2-day, 7-day, and 90-day stroke-risk bands.
When to use it
Use this at first contact for a patient with a probable TIA to inform urgency of workup and admission. ABCD2 is a triage aid, not a substitute for imaging - current AHA/ASA guidance recommends rapid carotid imaging, ECG, and brain MRI for most TIA patients regardless of score; the score helps prioritize how quickly that workup happens.
References
Johnston SC, Rothwell PM, Nguyen-Huynh MN, et al. Validation and refinement of scores to predict very early stroke risk after transient ischaemic attack. Lancet 2007;369(9558):283-292.
Worked example: ABCD2 7/7 - High risk (2-day stroke risk ~8.1%).
Sophie Well is a reference and educational tool. Not medical, legal, or financial advice. Does not replace clinician judgment, professional billing review, or legal counsel.