Independent mapping methods reveal rotational activation near pulmonary veins where atrial fibrillation terminates before pulmonary vein isolation.

ABSTRACT:

Objective

To investigate mechanisms by which atrial fibrillation (AF) may terminate during ablation near the pulmonary veins before the veins are isolated (PVI).

Introduction

It remains unstudied how AF may terminate during ablation before PVs are isolated, or how patients with PV reconnection can be arrhythmia-free. We studied patients in whom PV antral ablation terminated AF before PVI, using two independent mapping methods.

Methods

We studied patients with AF referred for ablation, in whom biatrial contact basket electrograms were studied by both an activation/phase mapping method and by a second validated mapping method reported not to create false rotational activity.

Results

In 22 patients (age 60.1 ± 10.4, 36% persistent AF), ablation at sites near the P

SUBMITTER: Navara R 

PROVIDER: S-EPMC5980723 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature