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Endocuff-Assisted versus Cap-Assisted Colonoscopy Performed by Trainees: A Retrospective Study
Yutaka Okagawa,Tetsuya Sumiyoshi,Yusuke Tomita,Shutaro Oiwa,Fumihiro Ogata,Takashi Jin,Masahiro Yoshida,Ryoji Fujii,Takeyoshi Minagawa,Kohtaro Morita,Hideyuki Ihara,Michiaki Hirayama,Hitoshi Kondo 대한소화기내시경학회 2020 Clinical Endoscopy Vol.53 No.3
Background/Aims: The adenoma detection rate (ADR) of screening colonoscopies performed by trainees is often lower than thatof colonoscopies performed by experts. The effcacy of cap-assisted colonoscopy (CAC) in adenoma detection is well documented,especially that of CACs performed by trainees. Endocuff, a new endoscopic cap, is reportedly useful for adenoma detection; however,no trials have compared the effcacy of Endocuff-assisted colonoscopy (EAC) and CAC conducted by trainees. Therefore, the presentstudy retrospectively compared the effcacy between EAC and CAC in trainees. Methods: This was a single-center, retrospective study involving 305 patients who underwent either EAC or CAC performed by threetrainees between January and December 2018. We evaluated the ADR, mean number of adenomas detected per patient (MAP), cecalintubation rate, cecal intubation time, and occurrence of complications between the EAC and CAC groups. Results: The ADR was significantly higher in the EAC group than in the CAC group (54.3% vs. 37.3%, p=0.019), as was the MAP (1.36vs. 0.74, p=0.003). No significant differences were found between the groups with respect to the cecal intubation rate or cecal intubationtime. No major complications occurred in either group. Conclusions: Our results suggest that EAC exhibits increased ADR and MAP compared to CAC when performed by trainees.
The recreational value of coral reefs in Okinawa Prefecture: A site choice model
( Katsuhito Nohara ),( Azusa Okagawa ),( Akira Hibiki ),( Hiroya Yamano ) 한국환경경제학회·한국자원경제학회(구 한국환경경제학회) 2018 한국환경경제학회 학술발표논문집 Vol.2018 No.하계
The coral reef ecosystems provide many goods and services to coastal populations, such as tourism. Furthermore, they form a unique natural ecosystem, with an important biodiversity value as well as scientific and educational value. They also form a natural protection against wave erosion. However, they have been damaged due to red soil erosion and global warming. Therefore, the preservation of coral reefs has been an important policy issue. The cost-benefit analysis is important for choosing cost-effective policies. Although a few studies have evaluated the economic value of coral reefs in Okinawa Prefecture, Japan, most of them have applied the contingent valuation method. The purpose of this study is to employ the discrete choice travel cost method to estimate the value of coral reefs that is obtained by visitors to Okinawa prefecture. We conducted an on-site survey of visitors at Naha airport, New Ishigaki airport and Miyako airport on 8 November to 11 in 2013 and collected 410 responses. We applied the conditional logit model to tourist’s decision to select his/her destination and estimate the model using collected data. Based on the conditional logit model, the hypothesis of independence from irrelevant alternatives (IIA) cannot be rejected. We also tried to apply the mixed logit model to our data but there was no significant difference between random parameters and nonrandom ones. The main finding is that the marginal willingness to pay by a tourist for coral reefs is 4,754 yen/km2 per day and 16,544 yen/㎢ per trip.
Mai Ego Makiguchi,Seiichiro Abe,Yutaka Okagawa,Satoru Nonaka,Haruhisa Suzuki,Shigetaka Yoshinaga,Ichiro Oda,Okamoto Ryuta,Yutaka Saito 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2
Background/Aims: This study aimed to assess the efficacy of a novel aerosol-exposure protection (AP) mask in preventingcoronavirus disease in healthcare professionals during upper gastrointestinal endoscopy and to evaluate its clinical feasibility. Methods: In Study 1, three healthy volunteers volitionally coughed with and without the AP mask in a cleanroom. Microparticleswere visualized and counted with a specific measurement system and compared with and without the AP mask. In Study 2,30 patients underwent endoscopic resection with the AP mask covering the face, and the SpO2 was measured throughout theprocedure. Results: In Study 1, the median number of microparticles in volunteers 1, 2, and 3 with and without the AP mask was 8.5 and 110.0,7.0 and 51.5, and 8.0 and 95.0, respectively (p<0.01). Using the AP mask, microparticles were reduced by approximately 92%. Themedian distances of microparticle scattering without the AP mask were 60, 0, and 68 in volunteers 1, 2, and 3, respectively. In Study 2,the mean SpO2 was 96.3%, and desaturation occurred in three patients. Conclusion: The AP mask could provide protection from aerosol exposure and can be safely used for endoscopy in clinical practice.
An integrated approach to tropical and subtropical island conservation
Yamano, Hiroya,Satake, Kiyoshi,Inoue, Tomomi,Kadoya, Taku,Hayashi, Seiji,Kinjo, Koichi,Nakajima, Daisuke,Oguma, Hiroyuki,Ishiguro, Satoshi,Okagawa, Azusa,Suga, Shinsuke,Horie, Tetsuya,Nohara, Katsuhit The Ecological Society of Korea 2015 Journal of Ecology and Environment Vol.38 No.2
After the reversion of Okinawa (Ryukyu Islands) to Japan in 1972, extensive urban and agricultural development resulted in a significant increase in sediment discharge to coastal waters. The release of sediment has caused the degradation of freshwater and coastal ecosystems and biodiversity. A consideration for catchment-to-reef continua, as well as agricultural (socioeconomic) factors is necessary to establish proper land-based management plans for the conservation of the island environment. We have set up a framework to integrate biophysics and socioeconomics: 1) setting a conservation target and threshold, 2) identifying the sources and processes, and 3) examining cost-effectiveness and management priorities. The framework may be applicable to other tropical and subtropical islands with similar characteristics.
An integrated approach to tropical and subtropical island conservation
Hiroya Yamano,Kiyoshi Satake,Tomomi Inoue,Taku Kadoya,Seiji Hayashi,Koichi Kinjo,Daisuke Nakajima,Hiroyuki Oguma,Satoshi Ishiguro,Azusa Okagawa,Shinsuke Suga,Tetsuya Horie,Katsuhito Nohara,Naoko Fukay 한국생태학회 2015 Journal of Ecology and Environment Vol.38 No.2
After the reversion of Okinawa (Ryukyu Islands) to Japan in 1972, extensive urban and agricultural development resulted in a significant increase in sediment discharge to coastal waters. The release of sediment has caused the degradation of freshwater and coastal ecosystems and biodiversity. A consideration for catchment-to-reef continua, as well as agricul¬tural (socioeconomic) factors is necessary to establish proper land-based management plans for the conservation of the island environment. We have set up a framework to integrate biophysics and socioeconomics: 1) setting a conservation target and threshold, 2) identifying the sources and processes, and 3) examining cost-effectiveness and management pri¬orities. The framework may be applicable to other tropical and subtropical islands with similar characteristics.