P185 FOLLOW–UP OF PATIENTS UNDERGOING POST–EXTRACTION LEADLESS PACEMAKER IMPLANTATION

Abstract Introduction The implantation of traditional stimulation devices involves numerous complications, in the short and long term, among which one of the most important is represented by infections. Most patients who experience this complication undergo a lead extraction procedure. In pacemaker–dependent patients, there is often the problem of having to perform an early reimplantation after extraction. This study aims to evaluate the outcome of Micra implantation in patients previously undergoing TLE, comparing them with patients who have a Micra as their first implant. Study materials and methods. From January 2017 to November 2022, 190 leadless pacemaker implant procedures were performed in our center. Of these patients 24 underwent an extraction procedure. To evaluate the technical performance of leadless pacemakers in post–extracted patients, a comparison was made between these and the "de novo" implanted leadless, so as to evaluate the effectiveness of the technical specifications. In particular, all the basic characteristics of the various patients, the data of the extraction and the implantation procedure were considered. Subsequently, the values ​​of the sensing, threshold, impedance and percentage of stimulation parameters collected in the follow–ups performed by the two groups of patients at 1 month after implantation, 6 months and every year were compared. Study results. An initial analysis of the follow–up of the aforementioned classes of patients from 2017 to today already provides us with some important data: in the patients who have implanted a leadless pacemaker following extraction, in no case has there been a recurrence of infection; the success of the Micra implant was 100%. Furthermore, the analysis of the electrical parameters statistics demonstrated the absolute effectiveness of the leadless device in both classes of patients compared, without highlighting major differences. Conclusions Leadless pacemaker implantation in post–extracted patients has proven to be an effective choice as an alternative to the implantation of a traditional pacemaker, to allow the reduction of the risk of infectious complications, while still guaranteeing optimal performance