Area Available for Atrial Fibrillation to Propagate Is an Important Determinant of Recurrence After Ablation.

ABSTRACT:

Objectives

This study sought to evaluate atrial fibrillation (AF) ablation outcomes based on scar patterns and contiguous area available for AF wavefronts to propagate.

Background

The relevance of ablation scar pattern acting as a barrier for electrical propagation in recurrence after catheter ablation for persistent AF is unknown.

Methods

Three-month post-ablation atrial cardiac magnetic resonance was used to determine post-ablation scar. The left atrium (LA) was divided into 5 areas based on anatomical landmarks and scar patterns. The length of gaps in scar on the area boundaries was used to calculate fibrillatory areas (FAs) by adding the weighted contribution of adjacent areas. Cylindrical as well as patient-specific computational models were used to further confi

SUBMITTER: Kamali R 

PROVIDER: S-EPMC9255558 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature