Screening for Atrial Fibrillation in Older Adults

A two-week ambulatory electrocardiogram monitor in a large group of individuals 70 years of age or older with no history of atrial fibrillation (AF) showed a very low incidence of AF (4.4%), almost all of which was paroxysmal. In less than 2% of the subjects did it represent ≥ 2% of the monitoring time. However, some patients had hours of AF, raising a concern for thromboembolic risk.