CHA₂DS₂-VASc Score Calculator

The CHA₂DS₂-VASc score is a clinical tool used to estimate the risk of stroke in patients with atrial fibrillation (AF). It helps guide decisions about anticoagulation therapy.

🧮 Score Breakdown

• C – Congestive Heart Failure: 1 point
• H – Hypertension: 1 point
• A₂ – Age ≥ 75: 2 points
• D – Diabetes Mellitus: 1 point
• S₂ – Stroke/TIA History: 2 points
• V – Vascular Disease: 1 point
• A – Age 65–74: 1 point
• Sc – Female Sex: 1 point

🎯 Interpretation

• Low Risk (0 points): No anticoagulation recommended.
• Moderate Risk (1 point): Consider anticoagulation therapy.
• High Risk (2+ points): Anticoagulation therapy generally recommended.

📌 Example Calculation

A 76-year-old female with congestive heart failure, hypertension, diabetes, and prior stroke:
1 (CHF) + 1 (HTN) + 2 (Age ≥ 75) + 1 (Diabetes) + 2 (Stroke) + 1 (Female) = 8 points → High Risk

📚 References

1. Lip GYH, et al. Use of the CHA2DS2-VASc score to assess stroke risk in patients with atrial fibrillation. Lancet. 2010. DOI: 10.1016/S0140-6736(09)61940-7
2. January CT, et al. AHA/ACC/HRS guideline for the management of patients with atrial fibrillation. Circulation. 2019. DOI: 10.1161/CIR.0000000000000534

Always consult a healthcare professional when interpreting results from this tool.