NOTE: All calculations must be re-checked and should not be used alone to guide patient care. See disclaimer.

CHADS2 Score for Atrial Fibrillation Stroke Risk

Estimates stroke risk in patients with atrial fibrillation by the CHADS2 criteria.

Congestive Heart Failure history?
Hypertension history?
Age ≥ 75?
Diabetes Mellitus history?
Stroke symptoms previously or TIA?
Patient has none of these
Low risk (1.9% risk of event per year if no coagulation).