Flush aortic tie versus selective preservation of the ascending left colic artery in low anterior resection for rectal carcinoma

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Abstract
The effects of two methods of colonic vascular ligation were studied in 143 consecutive patients who underwent low anterior resection with total mesorectal excision and full mobilization of the splenic flexure. Either the ascending left colic artery (ALCA) was selectively preserved (n = 52) or a flush aortic ligation was performed (n = 91). In those with a protective colostomy, the radiological leak rate was 12 per cent when the ALCA was preserved (n = 41) and 10 per cent when a flush aortic tie was performed (n = 60) (P > 0.95; 95 per cent confidence interval (c.i.) for difference ‐ 10 to + 15 per cent). In those without a colostomy, the clinical leak rates of 9 per cent when the ALCA was preserved (n = 11) and 19 per cent when a flush aortic tie was performed (n = 31) were not significantly different (P > 0.10; 95 per cent c.i. for difference −12 to + 32per cent). Proportional hazards analysis showed no association between the method of vascular ligation and the risk of tumour recurrence and death. Anastomotic leak rates, tumour recurrence and survival were not related to the method of vascular ligation.

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