Objective: To compare the incidence rate of urinary tract infections (UTIs) and associated pathogens between patients with ileal conduit and patients with orthotopic neobladder urinary diversion.
Patients And Methods: The medical records of 179 patients treated with radical cystectomy between 2006 and 2011 were reviewed and data pertaining to postoperative UTI were collected. UTI incidence was reported at 3 months' intervals and compared by diversion type. Preoperative predictors of UTI were evaluated with Cox regression analyses.
Results: The study cohort included 130 patients with ileal conduit and 49 patients with orthotopic neobladder. Patients with a neobladder were younger (P <.001). Median follow-up was 38 months (IQR [interquartile range], 11-63). Median time from surgery to first infection was 1.5 months (IQR, 1-12.5) for patients with a neobladder and 11 months (IQR, 2.5-27) for patients with a conduit (P = .04). During the first 3 months after surgery, 29% of the patients with a neobladder and 8% of the patients with ileal conduit had a UTI episode (P = .001). Rates of UTI did not differ during subsequent follow-up. Diversion type was not associated with UTI on multivariable analysis. Escherichia coli was the most common pathogen in patients with a conduit (58%), and Klebsiella spp. in patients with a neobladder (29%).
Conclusion: The risk of UTI is significantly higher in patients with a neobladder during the first 3 months after surgery and comparable to patients with ileal conduit during subsequent follow-up. These findings may facilitate preoperative counseling regarding the expected risk of UTI after urinary diversion.
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