Not All Rotors, Effective Ablation Targets for Nonparoxysmal Atrial Fibrillation, Are Included in Areas Suggested by Conventional Indirect Indicators of Atrial Fibrillation Drivers: ExTRa Mapping Project

Overview

Journal J Arrhythm

Publisher Wiley

Date 2018 Apr 17

PMID 29657593

Citations 21

Authors

Kensuke Sakata

Yusuke Okuyama

Tomoya Ozawa

Ryo Haraguchi

Kazuo Nakazawa

Takeshi Tsuchiya

Minoru Horie

Takashi Ashihara

Affiliations

Soon will be listed here.

Abstract

Background: Effects of nonparoxysmal atrial fibrillation (non-PAF) ablation targeting complex fractionated atrial electrogram (CFAE) areas and/or low voltage areas (LVAs) are still controversial.

Methods And Results: A recently developed online real-time phase mapping system (ExTRa Mapping) was used to conduct LVA mapping and simultaneous ExTRa and CFAE mapping in 28 non-PAF patients after pulmonary vein isolation (PVI). Nonpassively activated areas, in the form of meandering rotors and/or multiple wavelets assumed to contain non-PAF drivers, partly overlapped with CFAE/LVAs but not always coincided with them.

Conclusion: Real-time rotor imaging, rather than conventional indirect indicators only, might be very useful for detecting non-PAF drivers.

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