# Incidence and Risk Factors for Permanent Pacemaker Implantation After Tricuspid Valve Repair

## TL;DR

This study finds that about 10% of patients need a pacemaker after tricuspid valve repair, with certain factors increasing the risk.

## Contribution

The study identifies specific risk factors for pacemaker implantation after tricuspid valve repair using a large patient database.

## Key findings

- PPM implantation occurred in 10.3% of patients after tricuspid valve repair.
- Older age, prior radiation, and combined valve surgeries increase the risk of needing a pacemaker.
- PPM implantation does not worsen early or long-term patient outcomes.

## Abstract

Although the likelihood of needing a permanent pacemaker (PPM) after tricuspid valve (TV) repair has been thought to be low compared with TV replacement, the incidence and determinants are controversial. This study aimed to evaluate the incidence and risk factors for PPM implantation after TV repair.

A total of 1237 consecutive patients undergoing TV repair from 1997 to 2019 were reviewed using a prospectively maintained database, and 1058 patients were enrolled.

Incidence of PPM implantation was 10.3% (n = 109). Median time to PPM implantation was 7 (range, 6-9) days. Indications for PPM implantation were heart block (n = 62, 56.9%), junctional or sinus bradycardia (n = 21, 19.3%), and ventricular arrhythmia (n = 17, 15.6%). Likelihood of PPM varied with concurrent procedures: left ventricular assist device (3.4%), mitral repair (11.2%), mitral valve replacement (13.7%), aortic and mitral valve replacement (19.2%), and isolated tricuspid repair (6.5%). Older age (odds ratio [OR], 1.020; 95% CI, 1.003-1.036), prior mediastinal radiation (OR, 4.106; 95% CI, 1.598-10.554), and concomitant mitral and aortic valve replacement (OR, 1.963; 95% CI, 1.046-3.683) were risk factors, and concomitant left ventricular assist device implantation (OR, 0.325; 95% CI, 0.139-0.759) was a protective factor for PPM implantation. PPM implantation did not affect the early outcomes, overall survival (P =.287), or cumulative incidence of recurrent moderate or greater tricuspid regurgitation (P =.890) or TV reoperation (P =.602).

The likelihood of PPM implantation after TV repair is relatively high, but PPM implantation does not affect the early and long-term clinical outcomes. Older age, prior mediastinal radiation, and concomitant mitral and aortic valve replacement are risk factors, and concomitant left ventricular assist device implantation is a protective factor for PPM implantation after TV repair.