Relationship between electrocardiographic characteristics and subclinical left ventricular systolic dysfunction in isolated left bundle branch block patients.

ABSTRACT:

Background

Early identification of subclinical left ventricular (LV) systolic dysfunction (LVSD) in patients with isolated left bundle branch block (LBBB) and preserved LV ejection fraction (LVEF), termed LBBB_pEF, is clinically important. Electrocardiography (ECG) has been proposed as a potential screening tool for detecting subclinical LVSD in LBBB_pEF patients, but its effectiveness has not been fully validated. This study investigated the relationships between specific ECG characteristics and subclinical LVSD in LBBB_pEF patients.

Methods

The study included 111 patients with LBBB_pEF. Two-dimensional speckle-tracking echocardiography was used to derive the LV global longitudinal strain (LV GLS), with LV GLS>-20% indicating subclini

SUBMITTER: Li G 

PROVIDER: S-EPMC12044813 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature