Table 2.
The CHA2DS2-VASc Score for Risk of Stroke in Nonvalvular AF
| Risk Factor | Score |
|---|---|
| Congestive cardiac failure | 1 |
| Hypertension | 1 |
| Age ≥ 75 | 2 |
| Diabetes mellitus | 1 |
| Stroke/TIA/thromboembolism | 1 |
| Vascular disease | 1 |
| Age 65-74 | 1 |
| Female sex | 1 |
| Maximum score | 9 |
A score of 0 indicates low risk; 1 indicates moderate risk; ≥2 indicates high risk.
Congestive cardiac failure is defined as left ventricular ejection fraction ≤40%.
Hypertension is defined as blood pressure consistently above 140/90 mmHg or treated hypertension on medication.
Vascular disease is defined as previous myocardial infarction, peripheral arterial disease or aortic plaque.