Spatial relationship of sites for atrial fibrillation drivers and atrial tachycardia in patients with both arrhythmias.

ABSTRACT:

Introduction

Atrial fibrillation (AF) often converts to and from atrial tachycardia (AT), but it is undefined if these rhythms are mechanistically related in such patients. We tested the hypothesis that critical sites for AT may be related to regional AF sources in patients with both rhythms, by mapping their locations and response to ablation on transitions to and from AF.

Methods

From 219 patients undergoing spatial mapping of AF prior to ablation at 3 centers, we enrolled 26 patients in whom AF converted to AT by ablation (n=19) or spontaneously (n=7; left atrial size 42±6cm, 38% persistent AF). Both atria were mapped in both rhythms by 64-electrode baskets, traditional activation maps and entrainment.

Results

Each patient had a single mapped AT (17 reentrant, 9 fo

SUBMITTER: Baykaner T 

PROVIDER: S-EPMC5865446 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature