Leadless Pacemaker Implantation Positions and Its Relationship with Procedure Efficacy and Complication

Recruiting now · Not applicable

Conditions studied: Leadless Pacemaker

In brief

Leadless pacemakers (LP) are safe and effective alternatives to transvenous pacemakers in select patients. Advances in battery and electronics technology allow for the entire pacemaker system to be implanted into the right ventricle, bypassing many of the weaknesses of transvenous pacemakers. Traditionally leadless pacemakers have been implanted in the right ventricular (RV) septum to prevent cardiac perforation, and much emphasis is placed during implantation to ensure a septal implant. However, in Asians with smaller heart sizes, septal implantation may be unfeasible. Cases of RV free wall implant have been achieved without any complications. This study aims to examine patients previously implanted with LP and determine their final attachment location. If a substantial portion of complication-free patients had RV free wall implants, then it can be argued the additional effort to ensure a septal implant is unnecessary. Additionally, intraoperative data, such as the intracardiac electrogram, may contain parameters correlated with implant position. This study also aims to study this correlation to guide future implant procedures. This is a prospective-retrospective cohort study. Patients who will implant leadless pacemakers or already implanted leadless pacemakers since 1 Jan 2015 will be recruited. After the implantation, patients will be invited back for a noncontrast ECG-gated CT heart. It will be timed at the end diastole and a 3D reconstruction will be performed. The attachment of the leadless pacemaker to the RV will be adjudicated from the CT. The patients' pre-operative laboratory tests, baseline demographics, medical history, LP electrical data and pre- and post-operative medication regiment will be collected retrospectively from their medical records in the Hospital Authority's Clinical Management System (CMS) and Clinical Data Analysis and Reporting System (CDARS).

Key facts

Study ID
NCT06692218
Run by
Chinese University of Hong Kong
People needed
196
Starts
2024-08-05
Expected to finish
2025-09-30
Last updated by the study team
2024-11-18

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

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Where it is running

Full record on ClinicalTrials.gov

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