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. 1988 Aug;140(2):283-8.
doi: 10.1016/s0022-5347(17)41584-9.

100 Cases of Mainz Pouch: Continuing Experience and Evolution

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100 Cases of Mainz Pouch: Continuing Experience and Evolution

J W Thüroff et al. J Urol. .

Abstract

The surgical technique for creation of the Mainz pouch uses 10 to 15 cm. of cecum and ascending colon and 2 ileal loops of the same length for construction of a urinary reservoir. Initial applications of the Mainz pouch were for bladder augmentation after subtotal cystectomy and for continent urinary diversion. Current indications have been extended to complete bladder substitution after radical cystoprostatectomy with anastomosis of the pouch to the membranous urethra. For cosmetic reasons the umbilicus is used as a stomal site for continent urinary diversion, and the technique of intussuscepting the continence nipple has been modified accordingly. A total of 100 patients underwent a Mainz pouch procedure since 1983: 34 for bladder augmentation, 15 for total bladder substitution after cystoprostatectomy and 51 for continent urinary diversion. In the bladder augmentation group 1 patient underwent conversion to a continent stoma, 1 has urge and frequency, and the remaining 32 are completely dry day and night. These patients empty the bladder at normal intervals spontaneously except for 3 who rely on intermittent catheterization. In the bladder substitution group 1 patient has grade 1 stress incontinence and the remainder are completely dry during the day. However, at night 4 patients have leakage and they use a condom urinal. In the urinary diversion group all but 2 patients are completely dry and are on intermittent catheterization. The main problem of the initial series was prolapse of the continence nipple, which has been solved by staple fixation of the nipple to the bowel wall and to the ileocecal valve.

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