Association between atrial premature beat and left atrial function in hypertrophic cardiomyopathy on cardiovascular magnetic resonance myocardial tissue tracking: a reproducibility cohort study.

ABSTRACT:

Background

Hypertrophic cardiomyopathy (HCM) involves a substantial risk of atrial arrhythmia, with atrial premature beats (APBs)-a known precursor to atrial fibrillation (AF)-often signaling early atrial dysfunction. However, sensitive assessment of left atrial (LA) function in patients with HCM remains underoptimized. This study aimed to evaluate LA function in patients with HCM via cardiovascular magnetic resonance myocardial tissue tracking (CMR-TT) and to determine the associations between LA-related indices and APB.

Methods

A total of 50 patients with obstructive HCM (HOCM), 54 patients with nonobstructive HCM (NOHCM), and 28 healthy controls were included in the study. CMR-TT was used to quantify LA functional parameters (including strain, strain rate, volume, and emp

SUBMITTER: Zhou S 

PROVIDER: S-EPMC12780575 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature