Prevalence of stroke and the need for thromboprophylaxis in young patients with atrial fibrillation: a cohort study.

Atrial fibrillation is the most common cardiac arrhythmia, and age is a well-established independent risk factor for stroke in these patients. Whereas high-risk patients clearly benefit from anticoagulation to prevent stroke, less is known about how to treat low-risk patients. Despite the recent gui