Abstract

Objective: We aimed to evaluate functional and urodynamic outcomes together with the influence of body mass index (BMI) on the voiding patterns of patients with Studer type orthotopic ileal neobladder.

Material and methods: Between 2000 and 2008, out of 61 patients who underwent a Studer type orthotopic ileal neobladder construction following radical cystoprostatectomy, 18 patients who were regularly followed without local recurrence or distant metastases were enrolled in the study to evaluate the functional results and urodynamic characteristics of the neobladder. 

Results: Maximum pouch capacity, compliance, maximum flow rate and mean residual urine volume were 320.5±64.8 mL, 35.6±23.3 mL/cmH2O, 14.1±6.5 mL/sec, and 63.3±40.4 mL, respectively. The nighttime and daytime incontinence rates were 44.4% and 16.6%. No significant correlation was found between daytime and nighttime continence rates or between the capacity and compliance of the neobladder and BMI. However, stress incontinence rate was statistically higher in patients with high BMI values (p=0.04). 

Conclusion: Despite the more frequent occurrence of stress urinary incontinence, orthotopic urinary diversions with successful functional outcomes and continence rates can be achieved in patients with high BMI values.