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15 results on '"Ohya, Tomohiko Richard"'

4. Efficacy of the pocket-creation method with a traction device in endoscopic submucosal dissection for residual or recurrent colorectal lesions

Author

Ide, Daisuke, primary, Ohya, Tomohiko Richard, additional, Ishioka, Mitsuaki, additional, Enomoto, Yuri, additional, Nakao, Eisuke, additional, Mitsuyoshi, Yuki, additional, Tokura, Junki, additional, Suzuki, Keigo, additional, Yakabi, Seiichi, additional, Yasue, Chihiro, additional, Chino, Akiko, additional, Igarashi, Masahiro, additional, Nakashima, Akio, additional, Saruta, Masayuki, additional, Saito, Shoichi, additional, and Fujisaki, Junko, additional

Published
2022
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5. Training program using a traction device improves trainees’ learning curve of colorectal endoscopic submucosal dissection

Author

Mitsuyoshi, Yuki, primary, Ide, Daisuke, additional, Ohya, Tomohiko Richard, additional, Ishihoka, Mitsuaki, additional, Yasue, Chihiro, additional, Chino, Akiko, additional, Igarashi, Masahiro, additional, Nakashima, Akio, additional, Saito, Shoichi, additional, Fujisaki, Junko, additional, and Saruta, Masayuki, additional

Published
2021
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6. Clinical utility of the pocket-creation method with a traction device for colorectal endoscopic submucosal dissection

Author

Ide, Daisuke, primary, Ohya, Tomohiko Richard, additional, Saito, Shoichi, additional, Mitsuyoshi, Yuki, additional, Hatamori, Hiroyuki, additional, Ikenoyama, Yohei, additional, Suzuki, Keigo, additional, Ishioka, Mitsuaki, additional, Yakabi, Seichi, additional, Yasue, Chihiro, additional, Chino, Akiko, additional, Igarashi, Masahiro, additional, Saruta, Masayuki, additional, and Fujisaki, Junko, additional

Published
2020
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7. Intra-abdominal pressure during endoscopic full-thickness resection comparing manual and automatic control insufflation: a block-randomized porcine study

Author

Kamba, Shunsuke, primary, Kobayashi, Masakuni, additional, Koizumi, Akio, additional, Ono, Shingo, additional, Hara, Yuko, additional, Shimamoto, Nana, additional, Matsui, Hiroaki, additional, Furuhashi, Hiroto, additional, Ohya, Tomohiko Richard, additional, Tamai, Naoto, additional, Nishikawa, Masako, additional, Nakajima, Kiyokazu, additional, and Sumiyama, Kazuki, additional

Published
2019
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13. Closure of iatrogenic large mucosal and full-thickness defects of the stomach with endoscopic interrupted sutures in in vivo porcine models: are they durable enough?

Author

Masakuni Kobayashi, Kazuki Sumiyama, Yamato Ban, Akira Dobashi, Ohya, Tomohiko Richard, Daisuke Aizawa, Shinichi Hirooka, Kiyokazu Nakajima, and Hisao Tajiri

Subjects
ENDOSCOPIC gastrointestinal surgery, GASTRIC emptying, IATROGENIC diseases, ADVERSE health care events, AUTOPSY, THERAPEUTICS
Abstract

Background In this study, we evaluated the technical feasibility of mucosal approximation of large ulcers via an endoscopic suturing system after endoscopic submucosal dissection (ESD), assessed the durability of these sutures, and compared this technique with serosal apposition of fullthickness gastric wall defects using the same device. Methods Post-ESD ulcers were closed with mucosal apposition in 7 pigs, and endoscopic fullthickness resection (EFTR) defects were closed with serosal apposition in 3 pigs. Pigs recovered for 1 week; they were then euthanized and necropsies were performed. Results Primary defect closure was achieved in 85.7% of the post-ESD closures and in 100% of the post-EFTR closures (p = 0.67). All pigs survived for 1 week. At necropsy, sutures had loosened in the post-ESD animals, although only minor deformity of the ulcer edges was observed in all repaired post-ESD ulcers. Meanwhile, all of the post-EFTR defect closures were sustained for 1 week. Conclusions Primary closure of post-therapeutic defects can be accomplished using the device. Inverted serosal apposition provides a more durable and reliable repair than everted mucosal apposition. [ABSTRACT FROM AUTHOR]

Published
2015
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15. A prospective randomized trial of lafutidine vs rabeprazole on post-ESD gastric ulcers.

Author

Ohya TR, Endo H, Kawagoe K, Yanagawa T, Hanawa K, Ohata K, Asayama M, Hisatomi K, Teratani T, Gunji T, Sato H, and Matsuhashi N

Abstract

Aim: To compare the effects of rabeprazole and lafutidine on post-endoscopic submucosal dissection (ESD) gastric ulcers., Methods: Patients with gastric tumors indicated for ESD were prospectively studied. After ESD, all patients were treated with intravenous omeprazole for the first 3 d. Patients were then randomly assigned to oral lafutidine or rabeprazole. Ulcer size, ulcer size reduction rate, and ulcer stage were evaluated 4 wk later. Occurrence of complication was monitored throughout the 4-wk period., Results: Sixty five patients were enrolled in the study, and 60 patients were subjected to the final analysis. In the lafutidine group (30 lesions in 29 patients), initial and 4-wk post-ESD ulcer sizes were 33.3 ± 9.2 and 10.5 ± 4.8 mm, respectively. In the rabeprazole group (34 lesions in 31 patients), the values were 34.7 ± 11.3 and 11.8 ± 6.7 mm, respectively. Ulcer size reduction rates in lafutidine and rabeprazole groups were 32.3% and 33.5%, respectively (P = 0.974). Ulcer stage 4 wk post-ESD did not differ significantly between the two groups (P = 0.868). Two cases in the rabeprazole group and no cases in the lafutidine group developed ulcer bleeding during the oral dose period, although the difference of bleeding rate between the two groups was not statistically significant (P = 0.157)., Conclusion: Lafutidine and rabeprazole have equivalent therapeutic effects on post-ESD gastric ulcers.

Published
2010
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