For licensed healthcare professionals only. Not a diagnostic tool. See full disclaimer.
ABCD² Score (TIA)
ABCD² Criteria
ABCD² Score
0
Low risk (~1.0% 2-day stroke risk)
About
The ABCD² score is a clinical prediction tool used to estimate the short-term risk of stroke following a transient ischemic attack (TIA). It uses five factors — Age, Blood pressure, Clinical features, Duration, and Diabetes — to stratify patients into low, moderate, and high risk categories. It helps guide decisions about urgent evaluation and hospitalization after TIA.
Formula
ABCD² = Age + BP + Clinical features + Duration + Diabetes
Range: 0 – 7 points
Interpretation
| ABCD² Score | Risk Level | 2-Day Stroke Risk |
|---|---|---|
| 0 – 3 | Low | ~1.0% |
| 4 – 5 | Moderate | ~4.1% |
| 6 – 7 | High | ~8.1% |
References
- Johnston SC, et al. Validation and refinement of scores to predict very early stroke risk after transient ischaemic attack. Lancet. 2007;369(9558):283-292.
- Rothwell PM, et al. A simple score (ABCD) to identify individuals at high early risk of stroke after transient ischaemic attack. Lancet. 2005;366(9479):29-36.
FAQ
Disclaimer
For educational and informational purposes only. Not intended to replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional.