Relationships between QRS duration and left ventricular deformation in hypertrophic cardiomyopathy.

ABSTRACT:

Background

QRS duration has been recognized as a risk factor for ventricular arrhythmias in hypertrophic cardiomyopathy (HCM), but its role in reflecting left ventricular (LV) function and morphology is unknown. We aimed to investigate the relationship between QRS duration and strain values in hypertrophic nonobstructive cardiomyopathy (HNCM) and hypertrophic obstructive cardiomyopathy (HOCM).

Methods

A total of 45 HNCM patients and 81 HOCM patients with preserved ejection fraction were retrospectively enrolled in this study. The QRS duration was measured using standard 12-lead electrocardiograms. LV global and segmental strain analyses were performed using cardiac magnetic resonance feature tracking.

Results

The QRS duration correlated with global circumferential (GC

SUBMITTER: Chen S 

PROVIDER: S-EPMC12591909 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature