CHA₂DS₂-VASc Score Calculator
Estimate the risk of stroke in patients with non-valvular Atrial Fibrillation (AF).
Risk Factors Assessment
CHA₂DS₂-VASc Score
0
Annual Stroke Risk (No Anticoagulation):
0.0%
No Antithrombotic Therapy (Aspirin or OAC) is recommended. Low risk.
Detailed Information & Interpretation
Interpretation & Guidance
| Score | Annual Stroke Risk (%) | Anticoagulation Guidance |
|---|---|---|
| 0 | 0.0% | No antithrombotic therapy |
| 1 | 0.6% | Consider OAC or Aspirin |
| 2+ | Oral Anticoagulation (OAC) recommended (NOAC or Warfarin) | |
Factor Definitions
- C: CHF/LV Dysfunction — History of heart failure or objective evidence of moderate to severe left ventricular systolic dysfunction (LVEF < 40%).
- H: Hypertension — Treated hypertension or resting systolic blood pressure > 140 mmHg on two occasions.
- A₂: Age ≥ 75 — Age 75 years or older.
- D: Diabetes Mellitus — Diagnosed diabetes requiring medication or dietary management.
- S₂: Stroke/TIA — Prior stroke, TIA (transient ischemic attack), or systemic embolism.
- V: Vascular Disease — Prior myocardial infarction, peripheral artery disease, or aortic plaque.
- A: Age 65–74 — Age between 65 and 74 years, inclusive.
- Sc: Sex Category — Being female.