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[The modified ureterosigmoidostomy (Mainz pouch II) as a continent form of urinary diversion]
P J Bastian1, P Albers, H Hanitzsch
1Klinik und Poliklinik für Urologie, Universitätsklinikum Bonn, Rheinische Friedrich-Wilhelms Universität Bonn. patrick.bastian@gmx.de
Introduction And Objectives:
The purpose of this study was to examine the outcome of the "Mainz Pouch II" urinary diversion at two different centers (the Klinik und Poliklinik für Urologie, Bonn and the Ospedale "San Salvadore", Pesaro, Italy) in terms of different techniques of ureteral implantation.
Materials And Methods:
Between March 1995 and February 2003, the procedure was performed on 83 patients with 165 renal units (RU). Ureteral implantation with the Goodwin-Hohenfellner technique was performed in 57 RU, with the Abol-Enein modification in 23 RU and the Le-Duc procedure in 85 RU. Follow-up was available for 71 patients (85%) with a period of 1 to 82 months (mean 19.5 months, median 12 months). A non-validated questionnaire was used in the Bonn series to determine specific urinary diversion items.
Results:
Early complications occurred in 12%, three requiring surgical intervention. Two patients died within the first 30 days after initial surgery. Pyelonephritis occurred in 12 RU (14% of the patients, 8.5% of the RU). Ureteral stenosis requiring reimplantation was found in two RU. The continence rate was 100% during daytime in the Bonn series; all but one patient had to get up for urination at night. A total of 63% of the patients were able to distinguish between stool and urine.
Conclusion:
Mainz pouch II is a quick, safe and easy to perform urinary diversion which serves as a satisfying alternative to other forms of continent diversion. Follow-up shows a low complication rate with good results in terms of continence; however, long term results have to be evaluated. There are no significant differences in complication rates for the different ureteral implantation techniques.
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