Predictors of need for catheterisation and urinary retention after radical cystectomy and orthotopic neobladder in male patients

Objectives: To investigate the prevalence of catheterisation and urinary retention in male patients with bladder cancer after radical cystectomy (RC) and orthotopic neobladder (ONB) and to identify potential predictors. Patients and Methods: Using an Institutional Review Board approved, prospectively maintained bladder cancer database, we collected information using a diversion-related questionnaire from 299 consecutive male patients with bladder cancer upon postoperative clinic visit. Urinary retention was defined as ≥3 catheterisations/day or a self-reported inability to void without a catheter. Uni- and multivariable Cox regression analysis was performed to identify predictors of catheterisation and urinary retention. Results: Self-catheterisation was reported in 51 patients (17%), of whom, 22 (7.4% of the total patients) were in retention. Freedom from any catheterisation at 3, 5, and 10 years after RC was 85%, 77%, and 62%, respectively. Freedom from retention at 3, 5, and 10 years after RC was 93%, 88%, and 79%, respectively. Multivariable Cox regression showed that higher body mass index (BMI; ≥27 kg/m²) significantly increased the need for catheterisation (hazard ratio [HR] 2.34, 95% confidence interval [CI] 1.26–4.32) as well as retention (HR 5.20, 95% CI 1.74–15.51). Greater medical comorbidity (Charlson Comorbidity Index score ≥2) correlated with the need for any catheterisation (HR 1.84, 95% CI 1.02–3.3), but not retention. Pathological stage and type of diversion were not significant predictors of the need to catheterise or urinary retention. Conclusion: In males undergoing RC with ONB, retention requiring catheterisation to void is uncommon. Patients with a BMI of ≥27 kg/m² are at significantly increased risk of retention and need for self-catheterisation.