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2. Cardiovascular Diseases

Author

Takemura, Genzou, Yoshioka, Izumi, Tanaka, Shinichiro, Fukuhara, Masayo, Fukuda, Masayuki, Matsubara, Tatsuaki, Ishikawa, Shigeo, Iino, Mitsuyoshi, Mitsubayashi, Hiromi, Miyate, Hiroki, Hasegawa, Akihiko, Sato, Kenichi, Inoue, Shin, Sato, Masahito, Chiba, Toshimi, editor, and Yamada, Hiroyuki, editor

Published
2023
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4. Intussusception

Author

Sato, Masahito, Taguchi, Tomoaki, editor, Iwanaka, Tadashi, editor, and Okamatsu, Takao, editor

Published
2016
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5. Appendectomy

Author

Sato, Masahito, Taguchi, Tomoaki, editor, Iwanaka, Tadashi, editor, and Okamatsu, Takao, editor

Published
2016
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10. Effect of lidocaine on swine lingual and pulmonary arteries

Author

Satoh, Kenichi, Kamada, Shun, Kumagai, Miho, Sato, Masahito, Kuji, Akiyoshi, and Joh, Shigeharu

Subjects
Pulmonary artery -- Research -- Physiological aspects, Lidocaine -- Research -- Health aspects, Swine -- Research -- Health aspects, Health
Abstract

Purpose Lidocaine has a biphasic action on smooth muscle of peripheral blood vessels, with vasoconstriction at low concentrations and vasodilation at higher concentrations. Many in vivo studies have demonstrated the effects of lidocaine on aortic or coronary arteries in several animals, but there are few reports about the effect on peripheral vessels. This study was designed to investigate the direct effects of lidocaine on peripheral vessels, namely swine lingual and pulmonary arterial rings. Methods Swine lingual artery and pulmonary artery segments, about 2-3 mm in diameter, were cut into 3-mm-long rings, and the lumen surface was gently rubbed to remove the endothelium. Isometric tension was measured using a displacement transducer and recorded. After a stable constriction was developed with 5 [micro]M noradrenaline, 5 [micro]M noradrenaline containing lidocaine (0.5, 1.0, 10, 20, 50 or 100 [micro]g/ml) was perfused for 5 min, and then all drug perfusion was stopped. The strength of any isometric tension during an experiment was normalized to the strength of the isometric tension immediately before lidocaine perfusion, and expressed as a percentage. Results Lidocaine elicited a concentration-dependent biphasic response of lingual and pulmonary arterial rings. The lidocaine concentration at 1 [micro]g/ml caused mild contraction. Dilation occurred at 10 [micro]g/ml and increased with increasing dose. Conclusions Lidocaine-induced vasoconstriction of swine lingual and pulmonary smooth muscle may occur at low concentration when lidocaine is infiltrated into the oral submucosa or administered intravenously for the treatment of ventricular arrhythmia., Author(s): Kenichi Satoh[sup.1] , Shun Kamada[sup.1] , Miho Kumagai[sup.2] , Masahito Sato[sup.1] , Akiyoshi Kuji[sup.2] , Shigeharu Joh[sup.1] Author Affiliations: (1) Division of Dental Anesthesiology, Department of Reconstructive Oral Maxillofacial [...]

Published
2015
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11. Efficacy of daikenchuto after laparoscopic surgery for perforated appendicitis.

Author

Higashio, Atsushi, Sato, Masahito, Endo, Kosuke, Saga, Kenichi, Miyauchi, Yuya, Hattori, Kengo, Suzuki, Kumiko, and Morotomi, Yoshiki

Subjects
*DRUG efficacy, *GASTROINTESTINAL system, *HERBAL medicine, *APPENDICITIS, *INFLAMMATION, *LAPAROSCOPIC surgery, *PEDIATRICS, *RETROSPECTIVE studies, *TRADITIONAL medicine, *DESCRIPTIVE statistics, *QUALITY assurance, *FLATULENCE, *MEALS, *PATIENT safety, *CHILDREN, PREVENTION of surgical complications
Abstract

Background: Although many recent studies have scientifically verified the efficacy of the traditional herbal medicine daikenchuto (DKT) for postoperative gastrointestinal function, its efficacy has not been established in children. We retrospectively evaluated the effect of DKT in pediatric patients with panperitonitis associated with perforated appendicitis (PaPA) who underwent laparoscopic appendectomy. Methods: Among 34 children with PaPA who underwent laparoscopic appendectomy from May 2012 to May 2021, 19 received DKT (group D) and 12 did not (group C). We compared postoperative gastrointestinal function, complications, and improvement in the inflammatory response between the two groups. Results: Of the evaluation parameters for postoperative gastrointestinal function, the mean ± standard deviation time to first flatus was significantly shorter in group D than in group C (1.21 ± 0.42 and 2.17 ± 0.94 days respectively; p = 0.0005). The time to ingestion of half a meal was also significantly shorter in group D than in group C (8.42 ± 3.69 and 12.50 ± 4.96 meal occasions respectively; p = 0.01). There was no significant difference in complication rates between the two groups. Conclusion: Daikenchuto rapidly and safely improved postoperative gastrointestinal symptoms in children with PaPA. To the best of our knowledge, this is the first study to evaluate the effect of DKT on postoperative symptoms in laparoscopic appendectomy and in children. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Exploring the length of the common channel of pancreaticobiliary maljunction on magnetic resonance cholangiopancreatography

Author

Itokawa, Fumihide, Kamisawa, Terumi, Nakano, Toshiaki, Itoi, Takao, Hamada, Yoshinori, Ando, Hisami, Fujii, Hideki, Koshinaga, Tsugumichi, Yoshida, Hitoshi, Tamoto, Eiji, Noda, Takuo, Kimura, Yasutoshi, Maguchi, Hiroyuki, Urushihara, Naoto, Horaguchi, Jun, Morotomi, Yoshiki, Sato, Masahito, Hanada, Keiji, Tanaka, Masao, Takahashi, Astushi, Yamaguchi, Taketo, Arai, Yuuki, Horiguchi, Akihiko, Igarashi, Yoshinori, and Inui, Kazuo

Published
2015
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31. Impact of Earthquakes on Takotsubo Cardiomyopathy

Author

Watanabe, Hiroshi, Kodama, Makoto, Okura, Yuji, Aizawa, Yoshifusa, Tanabe, Naohito, Chinushi, Masaomi, Nakamura, Yuichi, Nagai, Tsuneo, Sato, Masahito, and Okabe, Masaaki

Published
2005

33. Effects of Diesel-Fuel Injection Condition and Piston Bowl Diameter on Performance and Emissions of a Natural Gas/Diesel Dual Fuel Engine

Author

Tanaka, Hidetake, Takizawa, Keigo, Sato, Masahito, Horibe, Naoto, Ishiyama, Takuji, and Sako, Takahiro

Subjects
Combustion Chamber, Emissions gas, Two-stage Injection (A1), Natural gas, Heat engine, Dual Fuel Engine
Abstract

This study investigates the influence of injection conditions and piston bowl geometry on combustion, performance and emissions of a natural gas/diesel dual fuel engine. Experiments were carried out using two pistons with different bowl diameters under various injection conditions of single- and two-stage diesel injection. The CFD simulation was also performed to calculate pilot-diesel fuel distribution in the combustion chamber and then the influence of pilot-diesel mixture formation on natural-gas combustion was discussed.

Published
2018

34. Effects of injection condition and combustion chamber shape on performance and exhaust emissions of supercharged natural-gas/diesel dual-fuel engine

Author

Sato, Masahito, Tanaka, Hidetake, Horibe, Naoto, Ishiyama, Takuji, and Sako, Takahiro

Abstract

This study aims to obtain a strategy for optimizing the combination of diesel-fuel injection conditions and combustion chamber geometry to achieve high thermal efficiency with low exhaust emissions in a natural-gas/diesel dual fuel engine. Experiments were performed using a single-cylinder test engine with a common-rail injection system varying injection timings of two-stage pilot injection and piston bowl diameter. The pilot spray development was calculated using CFD simulation to understand the mechanism of experimental results. The experimental results showed that a smaller bowl diameter reduces THC and NOx emissions under a condition of high equivalence ratio, and the CFD results showed that the smaller bowl diameter provides a richer mixture of 1st pilot injection and a leaner mixture of 2nd pilot injection than a larger bowl diameter., 日本機械学会 関西支部第93期定時総会講演会

Published
2018

37. AUTHORS' ADDRESSES

Author

Ahlby, Lena, primary, Aizawa, Michihiko, additional, Akai, Makoto, additional, Akiya, Takaji, additional, Alefeld, Georg, additional, Andersson, J.V., additional, Ando, Yoshimasa, additional, Bäckström, Bernt L., additional, Baehr, Hans Dieter, additional, Bassols, J., additional, Bednarek, N., additional, Bell, J.M., additional, Berntsson, Thore, additional, Blaise, Jean-Claude, additional, Bokelmann, Horst, additional, Bouma, Jos W.J., additional, Burkart, R., additional, Chapon, Christian, additional, Chen, Xian Yu, additional, Cho, Myong Jae, additional, Cochran, Robert W., additional, Coda, P., additional, Cook, F.B., additional, Cuthbert, D.F., additional, Delandre, M., additional, DeVault, Robert C., additional, DeVries, W.A.G., additional, Dutto, Thierry, additional, Eggen, Geir, additional, Endo, Hajime, additional, Endo, N., additional, Enström, Henrik, additional, Ezaki, Toshio, additional, Fairchild, Philip D., additional, Fehle, Rita, additional, Fehrm, Mats Birger, additional, Ferriter, John P., additional, Frivik, Per Erling, additional, Fujii, At sushi, additional, Fujiwara, Ichiro, additional, Fukuda, Tadashi, additional, Fulkerson, William, additional, Furukawa, Tetsuro, additional, Gilles, Ted C., additional, Glas, L.O., additional, Granryd, Eric G.U., additional, Hackensellner, Thomas, additional, Hakuta, Toshikatsu, additional, Halozan, Hermann, additional, Hlawiczka, Helmut, additional, Hamamatsu, Teruhide, additional, Haukås, Hans T., additional, Haramura, Shigenori, additional, Hihara, Eiji, additional, Hino, Toshiyuki, additional, Hirata, Y., additional, Hodgett, David Lowry, additional, Högeberg, M., additional, Honda, Tetsuya, additional, Hoogendoorn, A.J., additional, Hopkirk, Robert J., additional, Igarashi, Seishiro, additional, Iizuka, Hiroshi, additional, Imabayashi, Satosi, additional, Isshiki, Naotsugu, additional, Ito, Yoshiharu, additional, Iwasa, Mizuo, additional, Iwatsubo, T., additional, Kamoshida, Junji, additional, Kannoh, S., additional, Kanzaki, Natsuo, additional, Kashiwagi, Takao, additional, Katayama, Kozo, additional, Kawabata, T., additional, Kawajiri, Kazuhiko, additional, Klas, Jürgen, additional, Koike, Keiji, additional, Koizumi, Hiromasa, additional, Kojima, Susumu, additional, Kondo, Junichi, additional, Kong, Xian Rong, additional, Kubota, Kihachiro, additional, Kunugi, Yoshifumi, additional, Kunugita, Eiichi, additional, Kuroda, J., additional, Kurosawa, Shegekichi, additional, Langreck, J., additional, Laue, Hans Jürgen, additional, Lee, K.W., additional, Le Goff, Pierre Yves, additional, Lin, X.C., additional, Linton, Jeffrey W., additional, Lorentzen, Gustav, additional, Matsuda, Hitoki, additional, Matsue, Junji, additional, Matsuki, Kenji, additional, Mayinger, Franz, additional, Meacham, Howard C., additional, Meunier, Francis E., additional, Meyer-Pittroff, Roland, additional, Miles, Daniel J., additional, Minato, Kazuaki, additional, Minemoto, Masaki, additional, Mori, Taketoshi, additional, Morino, Kimio, additional, Mučić, Vinko, additional, Munakata, Tetsuo, additional, Nagamatsuya, Kotoku, additional, Nagaoka, Yoshikazu, additional, Naito, Daiji, additional, Nakagawa, Hidenobu, additional, Nakaiwa, Masaru, additional, Nakamura, Makoto, additional, Nakazato, Takashi, additional, Nihei, Tetsuya, additional, Nishioka, Junji, additional, Nishiyama, N., additional, Nomura, Hideo, additional, Nowakowski, Gary A., additional, Ogawa, Masato, additional, Ohrt, D., additional, Okuda, Shinji, additional, Ohuchi, Tomihisa, additional, Owa, Masaru, additional, Ozaki, Koichi, additional, Park, H.C., additional, Park, I.H., additional, Petty, S.E., additional, Rasmussen, Robert W., additional, Riegger, Otto K., additional, Rivero, R., additional, Rowles, Peter A., additional, Saikawa, M., additional, Saito, Takamoto, additional, Sagara, Noriyasu, additional, Sanner, Burkhard, additional, Sato, K., additional, Sato, Masahito, additional, Schneider, R., additional, Sekimoto, Yoshitaka, additional, Sekino, Hideo, additional, Sekizaki, Masato, additional, Shelton, Sam V., additional, Shen, Jian Rong, additional, Shimizu, Keiichirou, additional, Shinada, Hiroaki, additional, Shinobu, Yoshiharu, additional, Smale, John G., additional, Strømmen, Ingvald, additional, Suganami, Takuya, additional, Sugimoto, Shigeo, additional, Sugiura, Masaru, additional, Svec, Otto J., additional, Svensson, Torbjörn, additional, Takigawa, Takatoshi, additional, Takahashi, Kenji, additional, Takemoto, Sadatoshi, additional, Takigawa, T., additional, Tamura, Rikuo, additional, Tanaka, Yasuo, additional, Tanii, Tadaaki, additional, Terada, Fusao, additional, Thorbergsen, Even, additional, Tomisaka, Yasushi, additional, Vamling, L., additional, van Gool, Willem, additional, Vellone, R., additional, Wakiyama, Yoshinori, additional, Watanabe, Koichi, additional, Wilson, Robert D., additional, Wu, Chang Chun, additional, Yabe, Akira, additional, Yamaguchi, Kazuaki, additional, Yamashita, Kiyoshi, additional, Yap, S., additional, Yasuda, K., additional, Yoshida, Akio, additional, Yoshida, Hajime, additional, Young, David John, additional, Zanifé, Tahn, additional, and Xian De, Zheng, additional

Published
1990
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Author

Sato, Masahito, Tanaka, Hidetake, Horibe, Naoto, Ishiyama, Takuji, Sako, Takahiro, 90583881, 30203037, Sato, Masahito, Tanaka, Hidetake, Horibe, Naoto, Ishiyama, Takuji, Sako, Takahiro, 90583881, and 30203037

Abstract

This study aims to obtain a strategy for optimizing the combination of diesel-fuel injection conditions and combustion chamber geometry to achieve high thermal efficiency with low exhaust emissions in a natural-gas/diesel dual fuel engine. Experiments were performed using a single-cylinder test engine with a common-rail injection system varying injection timings of two-stage pilot injection and piston bowl diameter. The pilot spray development was calculated using CFD simulation to understand the mechanism of experimental results. The experimental results showed that a smaller bowl diameter reduces THC and NOx emissions under a condition of high equivalence ratio, and the CFD results showed that the smaller bowl diameter provides a richer mixture of 1st pilot injection and a leaner mixture of 2nd pilot injection than a larger bowl diameter.

Published
2018

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Author

Tanaka, Hidetake, Takizawa, Keigo, Sato, Masahito, Horibe, Naoto, Ishiyama, Takuji, Sako, Takahiro, 90583881, Tanaka, Hidetake, Takizawa, Keigo, Sato, Masahito, Horibe, Naoto, Ishiyama, Takuji, Sako, Takahiro, and 90583881

Abstract

This study investigates the influence of injection conditions and piston bowl geometry on combustion, performance and emissions of a natural gas/diesel dual fuel engine. Experiments were carried out using two pistons with different bowl diameters under various injection conditions of single- and two-stage diesel injection. The CFD simulation was also performed to calculate pilot-diesel fuel distribution in the combustion chamber and then the influence of pilot-diesel mixture formation on natural-gas combustion was discussed.

Published
2018

42. Clinical Predictors of Recurrent Ventricular Arrhythmias in Secondary Prevention Implantable Cardioverter Defibrillator Recipients With Coronary Artery Disease ― Lower Left Ventricular Ejection Fraction and Incomplete Revascularization ―

Author

Takano, Toshiki, primary, Tanaka, Komei, additional, Ozaki, Kazuyuki, additional, Sato, Akinori, additional, Iijima, Kenichi, additional, Yanagawa, Takao, additional, Izumi, Daisuke, additional, Ozawa, Takuya, additional, Fuse, Koichi, additional, Sato, Masahito, additional, Tanabe, Naohito, additional, and Minamino, Tohru, additional

Published
2018
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48. Efficacy of bepridil to prevent ventricular fibrillation in severe form of early repolarization syndrome

Author

Katsuumi, Goro, Shimizu, Wataru, Watanabe, Hiroshi, Noda, Takashi, Nogami, Akihiko, Ohkubo, Kimie, Makiyama, Takeru, Takehara, Naofumi, Kawamura, Yuichiro, Hosaka, Yukio, Sato, Masahito, Fukae, Satoki, Chinushi, Masaomi, Oda, Hirotaka, Okabe, Masaaki, Kimura, Akinori, Maemura, Koji, Watanabe, Ichiro, Kamakura, Shiro, Horie, Minoru, Aizawa, Yoshifusa, Makita, Naomasa, and Minamino, Tohru

Published
2014
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