Cardiology

CHA2DS2-VASc

Educational content onlySource-checked

Cross-checked against published sources on October 8, 2026 (automated, AI-assisted); not reviewed by a licensed clinician. Not medical advice, not for diagnosis or treatment decisions. Always verify with current guidelines and consult a qualified professional. We may be wrong: this page can contain errors. If you spot one, report it and we will check it against current sources and correct it.

Sources checked (4)

Journal of Arrhythmia (Japanese Heart Rhythm Society / Wiley) via Europe PMC. 2017 consensus of the Asia Pacific Heart Rhythm Society on stroke prevention ... (Table 1) (accessed October 8, 2026)
Korean Circulation Journal (Korean Society of Cardiology) via Europe PMC. 2018 Korean Guideline of Atrial Fibrillation Management (accessed October 8, 2026)
American Heart Association / American College of Cardiology (Circulation). 2023 ACC/AHA/ACCP/HRS Guideline for the Diagnosis and Management of Atrial Fibrillation (accessed October 8, 2026)
Chest (American College of Chest Physicians) record in Europe PMC. Refining clinical risk stratification ... Euro Heart Survey (abstract) (accessed October 8, 2026)

Source policy Medical disclaimer

Formula

Heart failure 1, hypertension 1, age 75 or above 2, diabetes 1, stroke/TIA/thromboembolism 2, vascular disease 1, age 65-74 1, female sex 1 (maximum 9).

Limitations

Risk categories follow the 2020 ESC convention (score excluding sex: 0 low, 1 intermediate, 2 or more high); local guidelines differ.
Applies to non-valvular atrial fibrillation; bleeding risk must be assessed separately.

References

Refining clinical risk stratification for predicting stroke and thromboembolism in atrial fibrillation using a novel risk factor-based approach: the Euro Heart Survey on atrial fibrillation. Lip GYH, Nieuwlaat R, Pisters R, Lane DA, Crijns HJGM. Chest. 2010;137(2):263-272. PMID 19762550