Hemodynamic mechanisms in patients with atrial functional and structural mitral regurgitation based on 4D flow cardiac MRI.

ABSTRACT:

Background

Atrial functional mitral regurgitation (AFMR) can cause mitral regurgitation (MR) and tricuspid regurgitation (TR) without structural valve abnormalities, due to atrial enlargement and annular dilatation. On the other hand, atrial fibrillation (Af) is one of the primary causes of AFMR, and increasing in the elderly population residing in industrialized countries. In addition, in recent years, flow energy loss (EL) assessed by four-dimensional (4D) flow magnetic resonance imaging (MRI) is expected to be a novel parameter of cardiac workload. This study aimed to evaluate the pathophysiology of AFMR by comparing parameters between AFMR with Af and structural MR (StMR) with prolapse from a viewpoint of hemodynamic.

Methods

This study was a prospective study. Preoperat

SUBMITTER: Nagao M 

PROVIDER: S-EPMC12780406 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature