CHA₂DS₂-VASc score
Stroke risk in nonvalvular atrial fibrillation to guide anticoagulation.
Inputs
0 of 2Age
Sex
Heart failure history
Hypertension history
Stroke, TIA, or thromboembolism
Vascular diseasePrior MI, peripheral artery disease, or aortic plaque
Diabetes
When to use
- Nonvalvular atrial fibrillation or flutter.
Pearls and pitfalls
- Not for moderate-to-severe mitral stenosis or mechanical valves.
- Female sex is a risk modifier; the 2023 US guideline frames risk by annual stroke rate.
Why use
Quick, with the points shown.
| Criterion | Points |
|---|---|
| Age: Under 65 | 0 |
| 65 to 74 | +1 |
| 75 or older | +2 |
| Sex: Male | 0 |
| Female | +1 |
| Heart failure history | +1 |
| Hypertension history | +1 |
| Stroke, TIA, or thromboembolism | +2 |
| Vascular disease | +1 |
| Diabetes | +1 |