Localized rotors and focal impulse sources within the left atrium in human atrial fibrillation: A phase analysis of contact basket catheter electrograms

BACKGROUND: Consistent detection of rotor(s) and/or focal impulse(s) of atrial fibrillation can using a 64-pole basket catheter remain unclear. METHODS AND RESULTS: Intracardiac left atrial electrograms were recorded, prior to ablation, in 20 patients with atrial fibrillation. Unipolar electrograms,...

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Detalles Bibliográficos
Autores principales: Sasaki, Naoko, Okumura, Yasuo, Watanabe, Ichiro, Madry, Andrew, Hamano, Yuki, Nikaido, Mizuki, Kogawa, Rikitake, Nagashima, Koichi, Takahashi, Keiko, Iso, Kazuki, Ohkubo, Kimie, Nakai, Toshiko, Hirayama, Atsushi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2016
Materias:
Original Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4823606/
https://www.ncbi.nlm.nih.gov/pubmed/27092196
http://dx.doi.org/10.1016/j.joa.2015.11.010
Descripción
Sumario:BACKGROUND: Consistent detection of rotor(s) and/or focal impulse(s) of atrial fibrillation can using a 64-pole basket catheter remain unclear. METHODS AND RESULTS: Intracardiac left atrial electrograms were recorded, prior to ablation, in 20 patients with atrial fibrillation. Unipolar electrograms, filtered at 0.1–300 Hz, were recorded and exported for an offline phase analysis. From the cohort, 8 of the 20 patients had analyzable data. Localized rotors were identified in 3 of these patients, with focal impulses detected in 4 patients. CONCLUSION: Localized rotors and focal impulses can be identified on phase maps of atrial fibrillation in a small number of patients.

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