Short- and long-term associations of atrial fibrillation catheter ablation with left atrial structure and function: A cardiac magnetic resonance study.

ABSTRACT:

Background

The effects of atrial fibrillation (AF) catheter ablation on the left atrium (LA) are poorly understood.

Objectives

To examine short- and long-term associations of AF catheter ablation with LA function using cardiac magnetic resonance (CMR).

Methods

Fifty-one AF patients (mean age 56 ± 8 years) underwent CMR at baseline, 1 day (n = 17) and 11 ± 2 months after ablation (n = 38). LA phasic volumes, emptying fractions (LAEF), and longitudinal strain were measured using feature-tracking CMR. LA fibrosis was quantified using late gadolinium enhancement (LGE).

Results

There were no acute changes in volume; however, active, total LAEF, and peak LA strain decreased significantly compared to the baseline. During long-term follow-up, there was a decrease in ma

SUBMITTER: Habibi M 

PROVIDER: S-EPMC7878398 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature