ArticleClinical endoscopy2025
Effectiveness of a novel ex vivo training model for gastric endoscopic submucosal dissection training: a prospective observational study conducted at a single center in Japan.
Article in Clinical endoscopy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Efficacy of next-generation endoscopy training simulator in improving international trainee endoscopic submucosal dissection skills.Endoscopy international open · 2026Article
- Feasibility of Duodenal Endoscopic Submucosal Dissection Training Using Thiel-Embalmed Cadavers.Endoscopy international open · 2026Article
- Meaningful progress towards a high-fidelity endoscopic submucosal dissection training simulator model.Clinical endoscopy · 2025Article
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8 authors.
Funding
Abstract
BACKGROUND/
aimsThe efficacy of endoscopic submucosal dissection (ESD) for early-stage gastric cancer is well established. However, its acquisition is challenging owing to its complexity. In Japan, G-Master is a novel ex vivo gastric ESD training model. The effectiveness of training using G-Master is unknown. This study evaluated the efficacy of gastric ESD training using the G-Master to evaluate trainees' learning curves and performance.
methodsFour trainees completed 30 ESD training sessions using the G-Master, and procedure time, resection area, resection completion, en-bloc resection requirement, and perforation occurrence were measured. Resection speed was the primary endpoint, and learning curves were evaluated using the Cumulative Sum (CUSUM) method.
resultsAll trainees completed the resection and en-bloc resection of the lesion without any intraoperative perforations. The learning curves covered three phases: initial growth, plateau, and late growth. The transition from phase 1 to phase 2 required a median of 10 sessions. Each trainee completed 30 training sessions in approximately 4 months.
conclusionsGastric ESD training using the G-Master is a simple, fast, and effective method for pre-ESD training in clinical practice. It is recommended that at least 10 training sessions be conducted.
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