Efficacy of Combined Cox-Maze IV and Ventricular Septal Myectomy for Treatment of Atrial Fibrillation in Patients With Obstructive Hypertrophic Cardiomyopathy

Atrial fibrillation (AF) has important clinical consequences in hypertrophic cardiomyopathy (HC). Safety and efficacy of the Cox-Maze IV procedure (when combined with ventricular septal myectomy) in patients with obstructive HC and paroxysmal AF is largely unresolved. Records of 395 consecutive HC patients (age 55 ± 13 years) who underwent septal myectomy for heart failure symptoms between 2004 and 2015 were reviewed. Sixty-two patients also had...