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

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• 作者：Naoko Sasaki ; MD^a ; Yasuo Okumura ; MD ; PhD^a ; ^{yasuwo128@yahoo.co.jp" class="auth_mail" title="E-mail the corresponding author} ; Ichiro Watanabe ; MD ; PhD^a ; Andrew Madry ; PhD^b ; Yuki Hamano ; BE^b ; Mizuki Nikaido ; BE^c ; Rikitake Kogawa ; MD^a ; Koichi Nagashima ; MD ; PhD^a ; Keiko Takahashi ; MD^a ; Kazuki Iso ; MD^a ; Kimie Ohkubo ; MD ; PhD^a ; Toshiko Nakai ; MD ; PhD^a ; Atsushi Hirayama ; MD ; PhD^a
• 关键词：Atrial fibrillation ; Rotor ; Focal impulse ; Phase mapping
• 刊名：Journal of Arrhythmia
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：32
• 期：2
• 页码：141-144
• 全文大小：1301 K

文摘

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.