Medical

CHA₂DS₂-VASc Guide — Stroke Risk in Atrial Fibrillation

Score stroke risk in AF patients for anticoagulation discussions. Pair with HAS-BLED for bleeding risk.

Published June 1, 2025 · 1 min read

Written by Ethan Brooks · Editor-in-Chief & Product Lead

Reviewed by James Cole

Last reviewed January 15, 2026 · Editorial policy

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CHA₂DS₂-VASc stroke risk

Used in atrial fibrillation to estimate annual stroke risk and inform anticoagulation discussions. Higher scores generally favour anticoagulation unless bleeding risk (HAS-BLED) is prohibitive.

Pair with our HAS-BLED calculator for bleeding risk. Browse all scores on the medical tools hub.

CHA₂DS₂-VASc calculator →

Disclaimer: These calculators are educational aids only. They do not diagnose, treat, or replace licensed medical advice. Always follow local clinical protocols.

Sources & references

Primary references used when researching and fact-checking this guide. See our editorial methodology.

Adobe PDF Reference — encryption — Adobe
PDF password protection and encryption standards (ISO 32000).
Ghostscript documentation — PDF settings — Artifex Software
Compression level behavior and PDF output settings.