# Left Bundle Branch Pacing Improved the Outcome of End‐Stage Hypertrophic Cardiomyopathy: A Case Report

## TL;DR

A patient with severe heart disease showed remarkable improvement after a new pacing technique targeting the left bundle branch.

## Contribution

This case report demonstrates the potential benefits of left bundle branch pacing in end-stage hypertrophic cardiomyopathy.

## Key findings

- Left bundle branch pacing led to a miraculous recovery in a patient with end-stage hypertrophic cardiomyopathy.
- Biventricular pacing had limited effects in this patient, but left bundle branch pacing was successful.

## Abstract

Patients with hypertrophic cardiomyopathy (HCM) enter the terminal stage when developed left ventricle enlargement and ejection fraction (EF) reduction. The concomitant complete left bundle branch block (LBBB) is considered an important factor related to poor outcome. Previous research suggested that biventricular pacing has limited effects on such patients. We report a case with end‐stage hypertrophic cardiomyopathy who had a miraculous recovery after receiving successful left bundle branch pacing (LBBP).