ABCD2 score calculator

ABCD2 Score for TIA

ABCD2 Score — TIA Stroke Risk

Criteria	Select
A — Age	1 <60 years (0)   ≥60 years (+1)
B — Blood Pressure	1 SBP <140 and DBP <90 (0)   SBP ≥140 or DBP ≥90 (+1)
C — Clinical Features	1 Other symptoms (0)   Speech disturbance without weakness (+1)   Unilateral weakness (+2)
D — Duration of symptoms	1 <10 minutes (0)   10–59 minutes (+1)   ≥60 minutes (+2)
D — Diabetes	1 No (0)   Yes (+1)
ABCD2 Score	/ 7

Interpretation — 2-Day Stroke Risk After TIA
0–3	Low risk — 1.0% risk of stroke within 2 days.
4–5	Moderate risk — 4.1% risk. Consider urgent workup and admission.
6–7	High risk — 8.1% risk. Admit for urgent evaluation and treatment.

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. PMID 17258668.