Evolution of high‐grade atrioventricular conduction disorders after transcatheter aortic valve implantation in patients who underwent implantation of a pacemaker with specific mode—that minimizes ventricular pacing—activated

Introduction The evolution of atrioventricular conduction disorders after transcatheter aortic valve implantation (TAVI) remains poorly understood. We sought to identify factors associated with late (occurring ≥7 days after the procedure) high‐grade atrioventricular blocks after TAVI, based on specific pacemaker memory data. Methods and Results STIM‐TAVI (NCT03338582) was a prospective, multicentre, observational study that enrolled all patients (from November 2015 to January 2017) implanted with a specific dual chamber pacemaker after TAVI, with the SafeR algorithm activated, allowing continuous monitoring of atrioventricular conduction. The primary endpoint was the occurrence of centrally adjudicated late high‐grade atrioventricular blocks during the year after TAVI. Among 197 patients, 138 (70.1%) had ≥1 late high‐grade atrioventricular block. Whereas oversizing (p = .005), high‐grade atrioventricular block during TAVI (p