Percutaneous Retrieval of Implanted Leadless Pacemakers: Feasibility at 2.5 Years Post-Implantation in an In Vivo Ovine Model.

Objectives: This in vivo ovine study describes the feasibility and safety of retrieving implanted leadless pacemakers (LPs).

Background: Although LPs have been shown to be removable soon after implantation, there are no data on the feasibility of removing chronically implanted LPs.

Methods: This study was performed in 2 phases.

Feasibility and efficacy of percutaneously delivered leadless cardiac pacing in an in vivo ovine model.

Introduction: In this in vivo ovine study, we describe the course of pacing and sensing parameters during follow-up as well as the gross and histopathological features at the implant site of the recently described leadless cardiac pacemaker (LCP).

Methods And Results: All sheep underwent LCP implantation in the right ventricular (RV) apex. Serial pacing/sensing thresholds were assessed.