Open AccessSuccessful modulation of atrial fibrillation drivers anchoring to fibrotic tissue after box isolation using an online real‐time phase mapping system: ExTRa Mapping
Author(s) -
Nakamura Toshihiro,
Kiuchi Kunihiko,
Fukuzawa Koji,
Takami Mitsuru,
Akita Tomomi,
Suehiro Hideya,
Takemoto Makoto,
Sakai Jun,
Yatomi Atsusuke,
Sonoda Yusuke,
Takahara Hiroyuki,
Nakasone Kazutaka,
Yamamoto Kyoko,
Hirata Kenichi,
Ashihara Takashi
Publication year - 2019
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1002/joa3.12232
Subject(s) - medicine , atrial fibrillation , isolation (microbiology) , anchoring , modulation (music) , cardiology , phase (matter) , bioinformatics , acoustics , structural engineering , engineering , chemistry , physics , organic chemistry , biology
Abstract A 41‐year‐old man with persistent atrial fibrillation (AF) underwent radiofrequency (RF) catheter ablation using an online real‐time phase mapping system: ExTRa Mapping. Box isolation could not terminate AF. Subsequently, RF applications on nonpassively activated areas (NPAs), where rotational activations were frequently observed, at the posterior bottom of left atrium outside of box lesion could convert AF to common atrial flutter. Of interest, the NPA near the posterior bottom were located on the patchy fibrotic tissue area assessed by the late‐gadolinium enhancement magnetic resonance imaging. This indicated the possibility of the critical AF rotor meandering through the fibrotic tissue area.