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  • Title: Study of full-thickness endoluminal segmental resection of colon in a porcine colon model (with videos).
    Author: Ahmed I, Shibukawa G, Groce R, Poussard A, Brining D, Raju GS.
    Journal: Gastrointest Endosc; 2007 Apr; 65(4):696-702. PubMed ID: 17383466.
    Abstract:
    BACKGROUND: Entrapment injury of the adjacent bowel is frequently encountered during full-thickness endoluminal colon suction-resection. OBJECTIVE: Our purpose was to develop a technique that can create a full-thickness resection of the colon without the risk of entrapment injury to adjacent viscera. DESIGN: Pilot study. SETTING: University medical center. PATIENTS: Five pigs. INTERVENTIONS: Traction-resection of the colon was created by using a grasping forceps to pull the colon into a band ligator loaded on a double-channel endoscope, followed by the application of a band, and subsequent snare resection (n = 14). Suction-resection of the colon was created by using a double-channel endoscope loaded with a band ligator (n = 12) and a single-channel endoscope with a band ligator (n = 6). MAIN OUTCOME MEASUREMENTS: Number of full-thickness colon resections, frequency of the adjacent bowel and mesenteric injury, and the size of the resections were measured. RESULTS: The suction-resection technique resulted in significant injury to adjacent viscera compared with the traction-resection technique (56% vs 0%, P = .0013). The traction-resection method resulted in a significantly larger resection compared with the suction-resection method (mean +/- SEM: 2.91 +/- 0.3 cm vs 2.1 +/- 0.1 cm, P = .024). A double-channel endoscope suction-resection method resulted in a significantly larger resection compared with a single channel suction-resection technique (mean +/- SEM: 2.1 +/- 0.1 cm vs 0.91 +/- 0.2 cm, P = .0022). LIMITATIONS: None. CONCLUSIONS: The traction-resection technique is safer than the suction-resection method in removing larger specimens of the colon. In addition, the traction-resection technique reduces the risk of injury of the mesentery or adjacent small intestine.
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