Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Naoko Sasaki, MD"'
Autor:
Naoko Sasaki, MD, Ichiro Watanabe, MD, Yasuo Okumura, MD, Koichi Nagashima, MD, Rikitake Kogawa, MD, Kazumasa Sonoda, MD, Kazuki Iso, MD, Keiko Takahashi, MD, Masaru Arai, MD, Ryuta Watanabe, MD, Sayaka Kurokawa, MD, Kimie Ohkubo, MD, Toshiko Nakai, MD, Atsushi Hirayama, MD, Mizuki Nikaido, BS
Publikováno v:
Journal of Arrhythmia, Vol 33, Iss 3, Pp 185-191 (2017)
Background: Ablation targeting complex fractionated atrial electrograms (CFAEs) or high dominant frequency (DF) sites is generally effective for persistent atrial fibrillation (AF). CFAEs and/or high DF sites may exist in low-voltage regions, which t
Externí odkaz:
https://doaj.org/article/d28017fe37014a2a968db06d40a440cd
Autor:
Naoko Sasaki, MD, Yasuo Okumura, MD, PhD, Ichiro Watanabe, MD, PhD, Andrew Madry, PhD, Yuki Hamano, BE, Mizuki Nikaido, BE, Rikitake Kogawa, MD, Koichi Nagashima, MD, PhD, Keiko Takahashi, MD, Kazuki Iso, MD, Kimie Ohkubo, MD, PhD, Toshiko Nakai, MD, PhD, Atsushi Hirayama, MD, PhD
Publikováno v:
Journal of Arrhythmia, Vol 32, Iss 2, Pp 141-144 (2016)
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 patient
Externí odkaz:
https://doaj.org/article/7c7159b8bc4547738674c3313339f317
Autor:
Rikitake Kogawa, MD, Ichiro Watanabe, MD, Yasuo Okumura, MD, Hiroaki Mano, MD, Kazumasa Sonoda, MD, Koichi Nagashima, MD, Naoko Sasaki, MD, Kimie Ohkubo, MD, Keiko Takahashi, MD, Kazuki Iso, MD, Sayaka Kurokawa, MD, Toshiko Nakai, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 32, Iss 2, Pp 108-111 (2016)
Background: Although alteration of the amplitude and morphology of bipolar electrograms is used widely as a guide of the ablation effect, there is little information concerning unipolar electrograms. The amplitude and morphology of filtered bipolar (
Externí odkaz:
https://doaj.org/article/f118b44496e041b79a328db617bc7c33
Autor:
Rikitake Kogawa, MD, Yasuo Okumura, MD, Ichiro Watanabe, MD, Masayoshi Kofune, MD, Koichi Nagashima, MD, Hiroaki Mano, MD, Kazumasa Sonoda, MD, Naoko Sasaki, MD, Kazuki Iso, MD, Keiko Takahashi, Kimie Ohkubo, MD, Toshiko Nakai, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 31, Iss 6, Pp 381-387 (2015)
Background: Complex fractionated atrial electrograms (CFAEs) and high dominant frequency (DF) are targets for atrial fibrillation (AF) ablation. Although adenosine triphosphate (ATP) is known to promote AF by shortening the atrial refractory period,
Externí odkaz:
https://doaj.org/article/7639b83007ed41289cab7fe4f79f1836
Autor:
Yasuo Okumura, MD, Ichiro Watanabe, MD, Koichi Nagashima, MD, Kazumasa Sonoda, MD, Naoko Sasaki, MD, Rikitake Kogawa, MD, Keiko Takahashi, MD, Kazuki Iso, MD, Kimie Ohkubo, MD, Toshiko Nakai, MD, Rie Takahashi, Yoshiki Taniguchi, Masako Mitsumata, MD, Mizuki Nikaido, BE, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 31, Iss 6, Pp 352-358 (2015)
Background: Because obesity is an important risk factor for atrial fibrillation (AF), we conducted an animal study to examine the effect of a high-fat diet (HFD) on atrial properties and AF inducibility. Methods: Ten 8-week-old pigs (weight, 18–23
Externí odkaz:
https://doaj.org/article/503600a7e4154cb9b4879d0898ff799a
Autor:
Rikitake Kogawa, MD, Yasuo Okumura, MD, Ichiro Watanabe, MD, Masayoshi Kofune, MD, Koichi Nagashima, MD, Hiroaki Mano, MD, Kazumasa Sonoda, MD, Naoko Sasaki, MD, Kimie Ohkubo, MD, Toshiko Nakai, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 31, Iss 2, Pp 101-107 (2015)
Background: The presence of complex fractionated atrial electrograms (CFAEs) and high dominant frequencies (DFs) during atrial fibrillation (AF) have been demonstrated to be related to AF maintenance. Therefore, sequential mapping of CFAEs and DFs ha
Externí odkaz:
https://doaj.org/article/f9871ac7762a41f197ceaeae3f2bdb31
Autor:
Kimie Ohkubo, MD, Ichiro Watanabe, MD, Yasuo Okumura, MD, Kazumasa Sonoda, MD, Naoko Sasaki, MD, Rikitake Kogawa, MD, Keiko Takahashi, MD, Toshiko Nakai, MD, Satoshi Kunimoto, MD, Yuji Kasamaki, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 30, Iss 6, Pp 446-452 (2014)
Background: Electrophysiological characteristics of early repolarization syndrome (ERS), i.e., the spatial and transmural dispersion of ventricular repolarization and ventricular late potentials can be evaluated using a signal-averaged vector-project
Externí odkaz:
https://doaj.org/article/a5e0bb35a29f474f858c91c7e67078a9
Autor:
Naoko Sasaki, MD, Ichiro Watanabe, MD, Yasuo Okumura, MD, Kazumasa Sonoda, MD, Rikitake Kogawa, MD, Keiko Takahashi, MD, Kimie Ohkubo, MD, Toshiko Nakai, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 30, Iss 5, Pp 372-375 (2014)
Background: Supernormal conduction (SNC) of the human ventricular myocardium has been reported, but its mechanism remains controversial. Methods: We recorded monophasic action potentials during rapid ventricular pacing from the right ventricular endo
Externí odkaz:
https://doaj.org/article/15dd7bd2ea074a73ad75c01e59dac605
Autor:
Kazumasa Sonoda, MD, Ichiro Watanabe, MD, Yasuo Okumura, MD, Naoko Sasaki, MD, Rikitake Kogawa, MD, Keiko Takahashi, MD, Hiroaki Mano, MD, Masayoshi Kofune, MD, Kimie Ohkubo, MD, Toshiko Nakai, MD, Satoshi Kunimoto, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 30, Iss 3, Pp 204-207 (2014)
Background: Action potential alternans may be important in causing ventricular arrhythmias. Methods and results: We recorded monophasic action potentials from the right ventricular endocardium in patients with persistent atrial fibrillation who under
Externí odkaz:
https://doaj.org/article/fbe09a800955485fb77f1d0fc5500a0c
Autor:
Kimie Ohkubo, MD, Ichiro Watanabe, MD, Yasuo Okumura, MD, Masayoshi Kofune, MD, Koichi Nagashima, MD, Hiroaki Mano, MD, Kazumasa Sonoda, MD, Rikitake Kogawa, MD, Naoko Sasaki, MD, Toshiko Nakai, MD, Satoshi Kunimoto, MD, Yuji Kasamaki, MD, Atsushi Hirayama, MD
Publikováno v:
Journal of Arrhythmia, Vol 29, Iss 4, Pp 211-216 (2013)
Background: Brugada-type ECG changes have been described in association with various cardiac disease states including electrolyte abnormalities, myocardial pathologies, and mechanical cardiac abnormalities as well as drug therapies with particular me
Externí odkaz:
https://doaj.org/article/fd0ed872f49a4c32b80018281c7b70bd