Survival Study of NOTES Rectosigmoid Resection Using Transanal Endoscopic Microsurgery (tem) with or Without Transgastric Endoscopic Assistance in a Swine Model

INTRODUCTION: Our group has previously demonstrated the feasibility of NOTES rectosigmoid resection in a swine cadaver model using TEM alone or in combination with transgastric endoscopic assistance to extend the length of colon mobilization. METHODS: A survival study of transanal endoscopic rectosigmoid resection with stapled coloanal anastomosis was conducted in swine using TEM (n=8) and TEM combined with transgastric endoscopic assistance (TEM+TG, n=8). Gastrotomies were created using a needle knife and balloon dilatation technique, and closed using T-tags. Operative outcomes were evaluated and compared between the groups using Student’s t test. All animals were survived for 2 weeks and necropsy findings were recorded. RESULTS: The mean preoperative weight was 42.4kg (range 39-48). In the TEM group, the mean operative time was 100.6 minutes (range, 80-120) which included 59.4 minutes to complete endoscopic rectosigmoid mobilization (range, 40-75). The mean length of colon mobilized transanally was 10.4cm (range, 8-13) and the specimen length was 6.2cm (range, 4-8). In the TEM+TG group, the mean operative time was 254.4 minutes (range, 205-355, p

Session: Podium Presentation

Program Number: S085

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