Conversion of Atrial Fibrillation to Sinus Rhythm During Coronary Intervention: Complex Interplay of Arrhythmic and Ischemic Substrate.

Atrial fibrillation (AF) can be a manifestation of acute coronary syndrome (ACS). Presence of AF during ACS further adds to complexities in the management issues and prognosis of ACS. We report a case of a 77-year-old male in whom we observed spontaneous conversion of AF to sinus rhythm during percutaneous coronary interventional procedure for critical ostial stenosis of the right coronary artery; and discuss potential electrophysiological mechanisms related to such phenomenon.