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Mitsui T, Sunakawa H, Yoda Y, Nishio M, Kondo S, Hamanaka J, Tokoro C, Nakajo K, Maeda S, Yano T, Hirasawa K. Novel gastric endoscopic submucosal dissection training model enhances the endoscopic submucosal dissection skills of trainees: a multicenter comparative study. Surg Endosc 2024:10.1007/s00464-024-10838-3. [PMID: 38619558 DOI: 10.1007/s00464-024-10838-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 03/25/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND Endoscopic submucosal dissection (ESD) requires high endoscopic technical skills, and trainees should develop effective training methods. In collaboration with KOTOBUKI Medical, we developed the G-Master, which is a non-animal training model that can simulate various parts of gastric ESD. We aimed to clarify the usefulness of the G-Master for inexperienced ESD trainees. METHODS We collected data from the first 5 gastric ESD cases conducted by 15 inexperienced ESD trainees at 5 participating centers between 2018 and 2022. The participants were divided into two groups: the G-Master training and non-G-Master training groups. Outcome measurements, such as procedural speed, perforation rate, self-completion rate, and en bloc resection rate, were compared between the two groups retrospectively. RESULTS A total of 75 gastric ESD cases were included in this study. The G-Master training group included 25 cases performed by 5 trainees, whereas the non-G-Master training group included 50 cases performed by 10 trainees. The median procedural speed for all cases was significantly faster in the G-Master training group than in the non-G-Master training group. Moreover, the procedural speed was linearly improved from the initial to the last cases in the lower location in the G-Master training group compared with the non-G-Master training group. In addition, although there was no significant difference, the G-Master training group showed lower rates of perforation and a lesser need to transition to expert operators than the non-G-Master training group. CONCLUSION The G-Master could improve the ESD skills of inexperienced ESD trainees.
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Affiliation(s)
- Tomohiro Mitsui
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
- Division of Endoscopy, Saitama Cancer Center, Saitama, Japan
- Department of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Hironori Sunakawa
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
- NEXT Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan.
| | - Yusuke Yoda
- Division of Endoscopy, Saitama Cancer Center, Saitama, Japan
| | - Masafumi Nishio
- Division of Endoscopy, Yokohama City University Medical Center, Kanagawa, Japan
| | - Shinpei Kondo
- Department of Gastroenterology, Fujisawa City Hospital, Kanagawa, Japan
| | - Jun Hamanaka
- Department of Gastroenterology, Yokohama Minami Kyosai Hospital, Kanagawa, Japan
| | - Chikako Tokoro
- Department of Gastroenterology, Saiseikai Yokohamashi Nannbu Hospital, Kanagawa, Japan
| | - Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
| | - Shin Maeda
- Department of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan
- NEXT Medical Device Innovation Center, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
| | - Kingo Hirasawa
- Division of Endoscopy, Yokohama City University Medical Center, Kanagawa, Japan
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Alatürk F, Hanoğlu Oral H, Gökkuş A, Ali B. Annual changes in biomass amount and feeding potential of shrubby rangelands in maquis formation. PeerJ 2023; 11:e15204. [PMID: 37123014 PMCID: PMC10143608 DOI: 10.7717/peerj.15204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 03/17/2023] [Indexed: 05/02/2023] Open
Abstract
Background This study evaluated the extent to which the endemic herbaceous and woody species of shrubby rangelands met the roughage needs of grazing animals throughout the year. Methods The biomass, botanical composition, and quality of hay were investigated in the shrubby rangelands in Paşaköy of the Ayvacık districts in Çanakkale over the course of a year. Plant samples were taken from the herbaceous species monthly and from the grazing parts of the shrubs in May and November. Results The total amount of biomass (hay + shrub) in the rangeland was found to be 30.448 kg/ha. Shrubs made up 18.78% of the rangeland, while the annual species comprised 54.96%, and perennial herbs covered 26.26% of the total biomass. Crude protein (CP) ratios of herbaceous species decreased continuously from March (13.58%) to September (6.73%), and then increased. A similar change was also seen in pure ash (PA) ratios. The CP ratios in the shrub species were high in spring and decreased in autumn and there was an irregular variation in PA rates. Oak had the highest PA ratio during the spring, while thuja had the highest ratio in autumn, and Juniperus oxycedrus during the winter months. In herbaceous species, cell wall components (NDF, ADF, and ADL) reached their highest levels in summer and decreased in spring and winter. However, in shrubs, these components varied according to the species and were generally lowest in spring and then increased in autumn and winter. Here, it was determined that year-round grazing is a suitable grazing system in the shrubby rangelands of the Mediterranean zone, and animals are able to find fresh forage in the rangelands due to the presence of shrubs. However, since the contribution of shrubs to the total forage production is low, additional roughage should be provided, except in the spring when the production and quality of hay increase. These practices may contribute to better livestock management.
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Affiliation(s)
- Fırat Alatürk
- Department of Field Crops/Faculty of Agriculture, Çanakkale Onsekiz Mart University, Canakkale, Türkiye
| | - Hülya Hanoğlu Oral
- Department of Animal Production and Technologies/ Faculty of Applied Sciences, Muş Alpaslan University, Muş, Türkiye
| | - Ahmet Gökkuş
- Department of Field Crops/Faculty of Agriculture, Çanakkale Onsekiz Mart University, Canakkale, Türkiye
| | - Baboo Ali
- Department of Field Crops/Faculty of Agriculture, Çanakkale Onsekiz Mart University, Canakkale, Türkiye
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