Gage BF, Waterman AD, Shannon W, Boechler M, Rich MW, Radford MJ. Validation of clinical classification schemes for predicting stroke: results from the National Registry of Atrial Fibrillation. JAMA. 2001 Jun 13;285(22):2864-70.

Singer DE, Albers GW, Dalen JE, Fang MC, Go AS, Halperin JL, Lip GY, Manning WJ; American College of Chest Physicians. Antithrombotic therapy in atrial fibrillation: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines (8th Edition). Chest. 2008 Jun;133(6 Suppl):546S-592S. doi: 10.1378/chest.08-0678.

Olesen JB, Torp-Pedersen C, Hansen ML, Lip GY. The value of the CHA2DS2-VASc score for refining stroke risk stratification in patients with atrial fibrillation with a CHADS2 score 0-1: a nationwide cohort study. Thromb Haemost. 2012 Jun;107(6):1172-9. doi: 10.1160/TH12-03-0175.

Yarmohammadi H, Varr BC, Puwanant S, Lieber E, Williams SJ, Klostermann T, Jasper SE, Whitman C, Klein AL. Role of CHADS2 score in evaluation of thromboembolic risk and mortality in patients with atrial fibrillation undergoing direct current cardioversion (from the ACUTE Trial Substudy). Am J Cardiol. 2012 Jul 15;110(2):222-6. doi: 10.1016/j.amjcard.2012.03.017.

Gage BF, van Walraven C, Pearce L, Hart RG, Koudstaal PJ, Boode BS, Petersen P. Selecting patients with atrial fibrillation for anticoagulation: stroke risk stratification in patients taking aspirin. Circulation. 2004 Oct 19;110(16):2287-92. Epub 2004 Oct 11.

Dr. Brian Gage

CHADS2 Score for Atrial Fibrillation Stroke Risk

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Estimates stroke risk in patients with atrial fibrillation.

CHADS2 Score

Daniel Runde, MD, is currently the assistant residency director and an assistant professor of emergency medicine at the University of Iowa Hospitals and Clinics. He received his medical degree at the University of Iowa Carver College of Medicine and completed residency in emergency medicine at St. Luke’s-Roosevelt Hospital Center in New York. He recently finished his Medical Education Fellowship at the department of emergency medicine at Harbor-UCLA. Dr. Runde is interested in evidence-based medicine with a focus on patient-important clinical outcomes, CT utilization in the emergency department and education and evaluation in medical education. Currently, he is in the process of obtaining a Masters in Medical Education through the Office of Consultation and Research in Medical Education at the University of Iowa Hospitals and Clinics.

Daniel Runde, MD

The CHADS2 score estimates stroke risk in patients with atrial fibrillation.

HAS-BLED Score

CHA₂DS₂-VASc Score

ATRIA Bleeding Risk

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