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CHADS2

Legacy CHADS₂ Model • See CHA₂DS₂-VASc for current guidelines

Risk Triage Ready

Select clinical history to see statistical annual risk.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Clinical Use

Initial stroke risk stratification for patients with non-valvular atrial fibrillation.
Identifying high-risk patients who require oral anticoagulation.
Historical comparison for longitudinal patient tracking.

Guideline Note

While CHADS₂ was the gold standard for over a decade, the 2020 ESC and 2023 ACC/AHA guidelines now prefer the CHA₂DS₂-VASc score for its better sensitivity in identifying "truly low-risk" patients.

Related Scores in Practice

In clinical practice, this assessment is frequently evaluated alongside other validated measures. Depending on the patient's presentation and specific diagnostic requirements, you may also need to utilize the CHA2DS2-VASc, HAS-BLED, ORBIT Score, ABC-AF Stroke Score, ABC-AF Bleeding Score or the eGFR (CKD-EPI) to formulate a comprehensive care plan.

Last Comprehensive Review: 2026

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