著者

Yuichi Hori Shiro Nakahara Tohru Kamijima Naofumi Tsukada Akiko Hayashi Sayuki Kobayashi Yoshihiko Sakai Isao Taguchi

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.78, no.8, pp.1851-1857, 2014-07-25 (Released:2014-07-25)

参考文献数

23

被引用文献数

11 15

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Background:Atrial low-voltage areas are suggested to be related to maintenance of atrial fibrillation (AF). The influence of the left atrium (LA) contact area (CoA) has not been investigated.Methods and Results:Twenty-two persistent AF patients underwent high-density mapping during AF and sinus rhythm (SR). Three representative CoA regions in the LA (ascending aorta: anterior wall; descending aorta: left inferior pulmonary vein [LIPV]; and vertebrae: posterior wall) were identified. Electrogram analysis of both high dominant frequency (high-DF; >8 Hz) and complex fractionated atrial electrogram (con-CFAE; <50 ms) regions during SR was done. The anatomical relationship between CoA and both the very low-voltage areas (vLVA; <0.2 mV) and high-frequency sources was determined. Forty-seven vLVA (194.4 cm2) and 60 CoA (337.0 cm2) were documented, and 32 vLVA directly overlapped CoA. The vLVA were preferentially found in the anterior (45%) and posterior (13%) walls of the LA, and in the LIPV (13%), and corresponded to CoA sites. The mean voltage during SR at high-DF sites was significantly lower than that at con-CFAE sites (0.62 vs.1.54 mV; P<0.0001). Seventy-two percent of high-DF sites overlapped CoA, while 54% of con-CFAE did. Furthermore, 44% of high-DF surface area directly overlapped CoA, while only 19% of con-CFAE did.Conclusions:Very low-voltage regions had a strong association with CoA. Sites with CoA had a higher incidence of fractionated electrograms both during SR and AF. (Circ J 2014; 78: 1951–1857)

著者

杉岡 千宏 林 安紀子 橋本 創一 山中 小枝子 久木田 裕紀 仲野 栞 Chihiro SUGIOKA Akiko HAYASHI Soichi HASHIMOTO Saeko YAMANAKA Yuki KUKITA Shiori NAKANO 杉岡 千宏(東京学芸大学大学院 連合学校教育学研究科) 林 安紀子(東京学芸大学 教育実践研究支援センター) 橋本 創一(東京学芸大学 教育実践研究支援センター) 山中 小枝子(東京学芸大学大学院 教育学研究科) 久木田 裕紀(東京学芸大学大学院 教育学研究科) 仲野 栞(東京学芸大学大学院 教育学研究科) Chihiro SUGIOKA(The United Graduate School of Education Tokyo Gakugei University) Akiko HAYASHI(Tokyo Gakugei University) Soichi HASHIMOTO(Tokyo Gakugei University) Saeko YAMANAKA(Graduate School of Education Tokyo Gakugei University) Yuki KUKITA(Graduate School of Education Tokyo Gakugei University) Shiori NAKANO(Graduate School of Education Tokyo Gakugei University)

出版者

東京学芸大学学術情報委員会

雑誌

東京学芸大学紀要. 総合教育科学系 (ISSN:18804306)

巻号頁・発行日

vol.69, no.2, pp.477-482, 2018-02