MedDesk
Tools

CHA₂DS₂-VASc: stroke risk in atrial fibrillation

Cardiovascular

Decides who with AF needs anticoagulation. Guidelines now recommend anticoagulation at ≥2 (men) / ≥3 (women), and to consider it at 1 / 2.

What you enter

  • Congestive heart failure / LV dysfunction (+1)
  • Hypertension (+1)
  • Age ≥75 (+2)
  • Diabetes (+1)
  • Prior stroke / TIA / thromboembolism (+2)
  • Vascular disease (MI, PAD, aortic plaque) (+1)
  • Age 65–74 (+1)
  • Female sex (+1)
FORMULAC 1 · H 1 · A₂ (≥75) 2 · D 1 · S₂ (stroke/TIA) 2 · V 1 · A (65–74) 1 · Sc (female) 1
SourceLip GY et al. Chest 2010;137:263-72; applied per 2023 ACC/AHA/ACCP/HRS AF guideline and 2024 ESC AF guidelineReviewedFormula and thresholds checked against the source on 2026-08-22. If the source updates, this line will say so.