Definition and scores for CHADS2 and CHA2DS2-VASc | Stroke risk stratification with the CHADS2 and CHA2DS2-VASc scores | ||
CHADS2 acronym[1] | Score | CHADS2 acronym | Unadjusted ischemic stroke rate (% per year)* |
Congestive HF | 1 | 0 | 0.6 |
Hypertension | 1 | 1 | 3.0 |
Age ≥75 years | 1 | 2 | 4.2 |
Diabetes mellitus | 1 | 3 | 7.1 |
Stroke/TIA/TE | 2 | 4 | 11.1 |
Maximum score | 6 | 5 | 12.5 |
6 | 13.0 | ||
CHA2DS2-VASc acronym[2] | Score | CHA2DS2-VASc acronym | Unadjusted ischemic stroke rate (% per year)* |
Congestive HF | 1 | 0 | 0.2 |
Hypertension | 1 | 1 | 0.6 |
Age ≥75 years | 2 | 2 | 2.2 |
Diabetes mellitus | 1 | 3 | 3.2 |
Stroke/TIA/TE | 2 | 4 | 4.8 |
Vascular disease (prior MI, PAD, or aortic plaque) | 1 | 5 | 7.2 |
Age 65 to 74 years | 1 | 6 | 9.7 |
Sex category (ie, female sex) | 1 | 7 | 11.2 |
Maximum score | 9 | 8 | 10.8 |
9 | 12.2 |
AF: atrial fibrillation; CHADS2: Congestive heart failure, Hypertension, Age ≥75 years, Diabetes mellitus, prior Stroke or TIA or thromboembolism (doubled); CHA2DS2-VASc: Congestive heart failure, Hypertension, Age ≥75 years (doubled), Diabetes mellitus, prior Stroke or TIA or thromboembolism (doubled), Vascular disease, Age 65 to 74 years, Sex category; HF: heart failure; TIA: transient ischemic attack; TE: thromboembolism; MI: myocardial infarction; PAD: peripheral artery disease.
* These unadjusted (not adjusted for possible use of aspirin) stroke rates were published in 2012[3]. Actual rates of stroke in contemporary cohorts might vary from these estimates.Original table and unadjusted ischemic stroke rates, as noted above, have been modified for this publication. January CT, Wann LS, Alpert JS, et al. 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation: A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines and the Heart Rhythm Society. J Am Coll Cardiol 2014; 64:e1. Table used with the permission of Elsevier Inc. All rights reserved.
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