Cardiac Pacing, Artificial

The registry for leadless pacemakers will collect and annually analyze the data of all leadless pacemaker implantations at the University Hospital St. Pölten, including demographic information, indications, procedural details, acute, medium- and long-term complications during follow-up. Due to the partially novel nature of the signals (atrial mechanical sensing markers) and the lack of long-term experience to date, data on these aspects will also be collected and analyzed. This is a single-center, prospective and retrospective registry that includes all patients receiving a leadless pacing device, as well as all patients who received a leadless pacing device between January 2021 and the start of the registry. All patients undergoing implantation of a leadless pacemaker will be invited to participate in the registry. For patients to be included retrospectively, participation in the registry will be offered at the time of their next routine follow-up visit. The indication for leadless pacing will be determined by the physician responsible for the patient. Enrollment in the registry will in no case alter or influence the treatment the patient receives. Data collection will take place at the time of implantation and continuously during follow-up over the entire study period. Pacemaker-related data may be obtained either in person or via remote monitoring.

This single-center longitudinal study aims to evaluate the occurrence and clinical impact of tricuspid regurgitation (TR) after cardiac-implanted-electronic-device (CIED) implantation by comprehensive echocardiographic assessment, including advanced three-dimensional (3D) transthoracic and transesophageal imaging. The primary objective of this study is to assess the prevalence and leading mechanism of new or worsening TR, defined as an increase of at least one grade on a five-grade scale, after new CIED implantation. Secondary objectives include clinical and echocardiographic endpoints at discharge, three months, one year, and annually for up to five years. They can be summarized as follows: 1. to evaluate morphological and functional changes (remodeling) of the tricuspid valve (TV) apparatus and right-sided heart chambers in patients undergoing new CIED implantation. 2. to identify risk factors for new or worsening TR after CIED implantation on an anatomical, procedural, and clinical level. 3. to determine the clinical impact of new or worsening TR after CIED implantation. 4. to explore the treatment strategies for lead-related TR (observational).