Is isolated aphasia associated with atrial fibrillation? A prospective study.

Background: A cardioembolic source, usually atrial fibrillation (AF), is detected in 14-30% of strokes. If AF is found, anticoagulation therapy provides a substantial decrease of the risk of recurrent cerebrovascular ischemic events. AF is often paroxysmal, and extensive diagnostic procedures may be necessary to detect it in patients.