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  • Title: Lengthening of the mesentery using the marginal vascular arcade of the right colon as the blood supply to the ileal pouch.
    Author: Goes RN, Nguyen P, Huang D, Beart RW.
    Journal: Dis Colon Rectum; 1995 Aug; 38(8):893-5. PubMed ID: 7634986.
    Abstract:
    PURPOSE: Creation of a safe ileal pouch requires a tension-free anastomosis. The aim of this study was to evaluate a technical procedure that increases the length of the mesentery while preserving the blood supply to the ileal pouch. HYPOTHESIS: Preservation of the marginal vascular arcade (MVA) of the right colon will allow ligation of more mesenteric vessels and increase the mesenteric length. METHODS: Six fresh cadavers were dissected. Measurement of the apex of the terminal ileum was done in relation to the pubic symphysis. Measurements were taken after 1) complete mobilization of the terminal ileum, right colon, and hepatic flexure; 2) vascular ligation between colon wall and the MVA, preserving the latter from the right branch of the middle colic artery to the ileal branch of the ileocolic artery (ICA); 3) ligation of the distal third of the superior mesenteric artery; 4) ligation of the ICA at its origin; 5) ligation of the right colon artery; and 6) division of the terminal ileal mesentery. RESULTS: This technique enabled complete division of the terminal ileal mesentery, adding a mean additional 3.6 (range, 2.5 - 5.0) cm (36.5 +/- 16.5 percent) in length to the mesentery, compared with superior mesenteric artery, ICA, and right colic artery ligation. CONCLUSION: Patients who have a shorter mesentery and concern of excessive mesenteric tension should have colectomy performed, preserving the MVA from the middle colic artery to the ileal branch of the ICA. The preserved MVA can be a reliable alternative blood supply to the pouch if more mesenteric vessel ligations are necessary.
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