Posted: 5/4/2008 by Amal Mattu, MD
(Updated: 10/19/2026)
The three factors that are most predictive of an arrhythmia as the cause of a syncopal episode are, in order: 1. abnormal ECG 2. history of CHF 3. age > 65
Overall, approximately 15-20% of cases of syncope are determined to be caused by an arrhythmia.
