Successful modulation of atrial fibrillation drivers anchoring to fibrotic tissue after box isolation using an online real‐time phase mapping system: ExTRa Mapping

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 activ...

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Detalles Bibliográficos
Autores principales: 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, Ken‐ichi, Ashihara, Takashi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6786983/
https://www.ncbi.nlm.nih.gov/pubmed/31624512
http://dx.doi.org/10.1002/joa3.12232
Descripción
Sumario: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.

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