🫀 CHA₂DS₂-VASc Score (AF Stroke Risk)
Estimate annual stroke risk in non-valvular atrial fibrillation with CHA₂DS₂-VASc.
CHA₂DS₂-VASc Score (AF Stroke Risk)
Congestive heart failure / LV dysfunction
Hypertension
Age
Diabetes
Prior stroke/TIA/thromboembolism
Vascular disease (MI/PAD/aortic plaque)
Sex
When to use
Guide oral anticoagulation decisions in AF.
How it works
CHF 1, hypertension 1, age ≥75 2, diabetes 1, prior stroke/TIA 2, vascular disease 1, age 65–74 1, female sex 1.
Key points
- Anticoagulate men ≥ 2 and women ≥ 3 in most guidelines.
- Female sex is a risk modifier, not a standalone indication.
- Balance against bleeding risk (HAS-BLED).
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.