Long-term follow up of single-chamber atrial pacing-system upgrade and Wenckebach block point behavior: potential implications for leadless AAI pacing?

ABSTRACT:

Background

Single chamber atrial pacing (AAI) provides a disease-specific treatment for sick sinus syndrome (SSS) but has largely been replaced by DDD pacing. With the advent of leadless atrial pacemakers (PM), there is growing interest in long-term follow-up data in patients with SSS and an AAI pacemaker.

Purpose

To assess the incidence of system upgrade in patients treated with AAI-PM for SSS during long-term follow-up.

Methods

This is an analysis of prospectively enrolled patients undergoing implantation of an AAI-PM. Wenckebach block point (WBP) was measured at implantation and serially during follow up.

Results

We included 178 patients (58% female, median age at implantation 77 [71-83] years). The median follow-up duration was 6.5 [2.0-9.7] years. Twenty-t

SUBMITTER: Badertscher P 

PROVIDER: S-EPMC12476441 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature