Naozumi Watanabe
Niigata University
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Featured researches published by Naozumi Watanabe.
Surgery Today | 2003
Shinji Homma; Naozumi Watanabe; Hitoshi Matsuo; Tomoaki Maruta; Jun Hasegawa; Haruhiko Okamoto; Takeyasu Suda; Katsuyoshi Hatakeyama
AbstractPurpose. To characterize the functional substitution of colon for the esophagus, we compared the electrogastrogram (EGG) maps and spectral frequencies and power of preoperative controls with patients who had undergone colonic replacement. Methods. Monopolar EGGs were recorded and spectrally analyzed at 27 locations on the thoracoabdominal surface. The spectral powers of five frequency groups were converted into EGG maps. Results. In contrast to the epigastric concentrations of maximal power foci in a preoperative 3-cpm (cycles per minute) group, those of the colon replacement subjects seemed not to be concentrated in the epigastric region. Power in the 6-cpm colon replacement group were significantly greater and those in the 3-cpm colon replacement group were significantly less than those in the preoperative controls. Spectral frequencies in the 1- and 3-cpm colon replacement groups were significantly higher than those in the preoperative controls. Conclusions. The colonic and gastric EGG activities had 3-cpm, and probably 6-cpm in common. However, the colonic EGG activities were significantly different from the gastric EGG activities in frequency in the 3-cpm group, and in amplitude in both the 3- and 6-cpm groups. Thus, the replaced colon seems to preserve the original colonic EGG activity.
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2006
Masato Nakano; Tatsuhiko Hayashi; Naozumi Watanabe; Yuichi Murayama; Toshihiko Ikarashi; Haruo Shimizu
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2004
Naozumi Watanabe; Atsushi Nashimoto; Hiroshi Yabusaki; Yasukimi Takii; Yoshiaki Tsuchiya; Otsuo Tanaka
Journal of Smooth Muscle Research | 2004
Shinji Homma; Kenji Satoh; Hitoshi Matsuo; Minoru Yagi; Jun Hasegawa; Tomoyuki Maruta; Naozumi Watanabe; Tsuneo Iiai; Katsuyoshi Hatakeyama
Journal of Smooth Muscle Research | 2005
Tetsurou Terashima; Shinji Homma; Naozumi Watanabe; Tomoaki Maruta; Jun Hasegawa; Katsuyoshi Hatakeyama
Journal of Smooth Muscle Research | 2004
Naozumi Watanabe; Shinji Homma; Hitoshi Matsuo; Tomoaki Maruta; Jun Hasegawa; Katsuyoshi Hatakeyama
Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1999
Tadashi Nishimaki; Tsutomu Suzuki; Tatsuo Kanda; Tatsuhiko Hayashi; Shin-ichi Kosugi; Naozumi Watanabe; Shintaro Komukai; Katsuyoshi Hatakeyama
Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2015
Koji Toge; Naozumi Watanabe; Kenji Usui; Takehiko Enomoto; Isamu Hama; Tatsuhiko Hayashi
新潟医学会雑誌 | 2013
義之 池田; 直純 渡辺; 達彦 林; 裕一 村山; Yoshiyuki Ikeda; Naozumi Watanabe; Tatsuhiko Hayashi; Yuichi Murayama
新潟医学会雑誌 | 2013
義之 池田; 直純 渡辺; 達彦 林; Yoshiyuki Ikeda; Naozumi Watanabe; Tatsuhiko Hayashi