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Cochlear Implantation in Patients with Eosinophilic Otitis Media

International Journal of Otolaryngology and Head & Neck Surgery 2015年第1期4卷 32-37页

作者： Masahiro Takahashi yasuhiro arai Naoko Sakuma Daisuke Sano Goshi Nishimura Takahide Taguchi Nobuhiko Oridate Satoshi Iwasaki Shin-Ichi Usami Department of Otorhinolaryngology Head and Neck Surgery Yokohama City University School of Medicine Yokohama Japan Department of Otorhinolaryngology International University of Health and Welfare Mita Hospital Tokyo Japan Department of Otorhinolaryngology Shinshu University School of Medicine Nagano Japan

It is known that cochlear implantation for deaf patients with eosinophilic otitis media (EOM) is safe and can provide good speech perception. However, the best timing of implant surgery in patients with EOM is not yet known. The aim of this case report is to suggest the appropriate timing of the surgery in EOM patients with deaf. Cochlear implantation was indicated in two patients with EOM. One underwent cochlear implantation in the absence of any ear discharge. In the other case, implant surgery was delayed for three years due to persistent ear discharge. No complications related to implant device or skin flap were observed in either case. The speech recognition score after implantation was good in the first case and poor in the second case. Perioperative complications were manageable even in the patient with persistent ear discharge. However, the delay in implant surgery due to the persistent ear discharge resulted in a poor speech recognition score. Early implantation should be considered even in EOM patients with ear discharge, although the presence of active middle ear inflammation is regarded as one of the contraindications for implantation according to the current Japanese guidelines.

关键词： Eosinophilic Otitis Media Cochlear Implantation Speech Recognition

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Time-dependent effects of castration on the bladder function and histological changes in the bladder and blood vessels

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Asian Journal of Andrology 2014年第3期16卷 457-460页

作者： Tomohiro Magari yasuhiro Shibata Seiji arai Bunzo Kashiwagi Keiji Suzuki Kazuhiro Suzuki Department of Urology Gunma University Graduate School of Medicine Maebashi Department of Urology Kurosawa Hospital Takasaki Department of Pathology Gunma University Graduate School of Health Sciences Maebashi Japan

We examined the effect of androgens on bladder blood flow （BBF）, bladder function and histological changes in castrated male rats. Male Wistar rats were classified into unoperated group （control group）, groups castrated at the age of 8weeks （group 8wPC） and groups castrated at the age of 4weeks （group 4wPC）. Each rat was used at the age of 20weeks. BBF was measured using fluorescent microspheres. Bladder cystometry was performed without anesthesia or restraint; the bladder was first irrigated with saline and then with 0.25% acetic acid （AA） solution. Maximum voiding pressure and voiding interval were measured. The bladder and lilac artery were histologically examined for differences in smooth muscle and quantity of collagen fiber to analyze the effect of castration on the smooth muscle content. No differences were noted in BBF following castration. The voiding intervals for all groups were shortened （P 〈 0.001） following AA irrigation. No significant difference was noted in the maximum voiding pressure. Histological changes were observed in bladder and lilac artery. Smooth muscle/collagen ratio at the bladder was lower in groups 8wPC and 4wPC compared to the control group （P 〈 0.01）, while that at the lilac artery was decreased in group 4wPC compared to the control group （P〈 0.001）. In conclusion, our findings indicate that castration does not alter BBF, but leads to histological changes in the bladder as well as its associated blood vessels.

关键词： bladder blood flow bladder function castration fluorescent microsphere method histological changes smooth muscle/collagen ratio

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Coordinated control between a grid forming inverter and grid following inverters suppling power in a standalone microgrid

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Global Energy Interconnection 2022年第3期5卷 259-265页

作者： Junichi arai yasuhiro Taguchi Kogakuin University 1-24-2 Nishi-ShinjukuShinjukuTokyo 163-8677Japan Energy and Environment Technology Research Institute 1-22-2 Nishi-Waseda ShinjukuNishi-Waseda East Wing 106Tokyo 169-0051Japan

Battery energy storage systems,fuel cells,and photovoltaic generators are being adopted in distribution networks to achieve CO;emission *** power sources require inverters to connect to AC ***,sub-networks,such as a microgrids containing inverter power sources,may be disconnected from the utility network and operated in a standalone mode during extended *** study focuses on a standalone microgrid supplied by inverter power sources without a synchronous generator and proposes a new microgrid inverter *** this inverter control,a single grid forming inverter is operated as a master power source to determine frequency and voltage,and other inverters,called grid following inverters,are operated as subordinate power sources with active and reactive power *** necessary functions in the energy management system are examined,and the coordinated operation of all inverters in the microgrid is demonstrated via simulation.

关键词： Inverter control Microgrid Standalone operation Energy management system Grid forming inverter Grid following inverter

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Can endoscopic submucosal dissection be safely performed in a smaller specialized clinic?

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World Journal of Gastroenterology 2013年第4期19卷 528-535页

作者： Naondo Sohara Satoshi Hagiwara Riki arai Haruhisa Iizuka yasuhiro Onozato Satoru Kakizaki Department of Endoscopy and Endoscopic Surgery Shirakawa ClinicMaebashiGunma 371-0051Japan Department of Medicine and Molecular Science Gunma University Graduate School of MedicineMaebashiGunma 371-8511Japan

AIM:To investigate whether endoscopic submucosal dissection(ESD) can be safely performed at small clinics,such as the Shirakawa ***:One thousand forty-seven ESDs to treat gastrointestinal tumors were performed at the Shirakawa Clinic from April 2006 to March *** efficacy,technical feasibility and associated complications of the procedures were *** ESD procedures were performed by five *** was induced with propofol for esophagogastorduodenal ***:One thousand forty-seven ESDs were performed to treat 64 patients with esophageal cancer(E),850 patients with gastric tumors(G:764 patients with cancer,82 patients with adenomas and four others),four patients with duodenal cancer(D) and 129 patients with colorectal tumors(C:94 patients with cancer,21 patients with adenomas and 14 others).The en bloc resection rate was 94.3%(E:96.9%,G:95.8%,D:100%,C:79.8%).The median operation time was 46 min(range:4-360 min) and the mean size of the resected specimens was 18 mm(range:2-150 mm).No mortal complications were observed in association with the ESD *** occurred in 12 cases(1.1%,E:1 case,G:9 cases,D:1 case,C:1 case) and postoperative bleeding occurred in 53 cases(5.1%,G:51 cases,D:1 case,C:1 case);however,no case required either emergency surgery or blood *** of the perforations and postperative bleedings were resolved by endoscopic clipping or *** other problematic complication observed was pneumonia,which was treated with conservative ***:ESD can be safely performed in a clinic with established therapeutic methods and medical services to address potential complications.

关键词： Endoscopic submucosal dissection Complication Perforation Clinic

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