# Left bundle branch pacing in a 4-year-old patient with complete heart block after correction of transposition of the great arteries via a dual chamber pacing system: a case report

## TL;DR

This case report describes successful left bundle branch pacing in a 4-year-old child with heart block after a heart defect repair.

## Contribution

It presents a rare successful application of LBBP in a very young pediatric patient.

## Key findings

- Left bundle branch pacing was successfully performed in a 4-year-old patient.
- The procedure was used to treat complete heart block after transposition of the great arteries repair.

## Abstract

Conduction system pacing is a recently developed pacing modality that serves as an alternative approach in maintaining or restoring physiological ventricular activity. Left bundle branch pacing (LBBP) has been rarely performed in children due to concerns regarding its safety and feasibility. Here, we report a case of successful LBBP in a 4-year-old patient with complete heart block following repair of transposition of the great arteries.