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Virtual Electrode Polarization-Induced Reentrant Activity
https://doi.org/10.18999/envm.47.62
https://doi.org/10.18999/envm.47.62ecfed5be-d805-47e3-a11a-6763e2da72ae
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2007-04-06 | |||||
タイトル | ||||||
タイトル | Virtual Electrode Polarization-Induced Reentrant Activity | |||||
言語 | en | |||||
著者 |
Nakagawa, Harumichi
× Nakagawa, Harumichi× Yamazaki, Masatoshi× Nihei, Motoki× Niwa, Ryoko× Arafune, Tatsuhiko× Mishima, Akira× Nashimoto, Shiho× Shibata, Nitaro× Honjo, Haruo× Sakuma, Ichiro× Kamiya, Kaichiro× Kodama, Itsuo |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | membrane potential | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | electric field stimulation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | optical mapping | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | reentry | |||||
抄録 | ||||||
内容記述 | It is known that electric shocks create a characteristic pattern of polarization (“virtual electrode polarization”) in the myocardium but its roles on post-shock excitations remain to be clarified. We have optically mapped electrical activity of the left ventricular subepicardial layer of Langendorff-perfused rabbit hearts endocardialy frozen. Monophasic anodal and cathodal shocks were applied during the plateau or repolarization phase of the action potential. Electric shocks (20V, 10 ms) resulted in a “dog-bone”pattern of polarization around the stimulation electrode and withdrawl of the shocks were followed by "break excitations". Spread of the break excitations were partially blocked by refractory of the preceding excitation, and slow cunduction around the functional line of block initiated reentrant excitations. These results suggest that break excitations arising from the virtual electrode polarization combined with spatial heterogeneity in repolarization of the preceding excitation play important roles in the genesis of post-shock reentrant activities. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
内容記述 | ||||||
内容記述 | 国立情報学研究所で電子化したコンテンツを使用している。 | |||||
言語 | ja | |||||
内容記述タイプ | Other | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Research Institute of Environmental Medicine, Nagoya University | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/envm.47.62 | |||||
ID登録タイプ | JaLC | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0287-0517 | |||||
書誌情報 |
en : Environmental Medicine : annual report of the Research Institute of Environmental Medicine, Nagoya University 巻 47, p. 62-65, 発行日 2003-12 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/7595 | |||||
識別子タイプ | HDL |