Biomedical Research

Purpose: To evaluate the pressure-volume changes and the radiological findings in Chinese patients undergoing sigmoidorectal pouch using sigmoidorectal pouch.

Methods: The ureters were implanted into the post walls of the detubularized sigmoid segment. Sigmoidal pressure and capacity and the anal pressure were measured. The intravenous pyelography, colon X-rays and uroflow rate assay were used. Continence was evaluated by interviewing the patients. A total of 20 patients with muscle-invasive bladder cancer underwent radical cystectomy and Mainz pouch II procedure between 2007 and 2012.

Results: In contrast to preoperative data, followed by postoperative procedure, the index has been changed significantly, such as colon X-rays anteroposterior pouch X-rays showed no passage up to an average volume of 360 ml (270-532 ml) through the descending colon, the sigmoidal colon pressure was on 26 cm H₂O at the 3^rd to the 6^th month, but no changes in preoperative anal sphincter pressure.

Conclusion: Sigmoidorectal pouch could provide a reservoir with higher capacity and lower pressure without reflux to the upper urinary tract and descending colon, suggesting that Pouch II is a safe, effective and reproducible surgical means for urinary diversion in patients undergoing radical cystometry.

Author(s): Jingmin Yan, Bin Sun, Xianchu Li, Quan Hong, Guangxin Pan, Jizhou Shi, Heqing Guo
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