Bladder capacity as a predictor of voided continence after failed exstrophy closure

Area of Science:

• Urology
• Pediatric Surgery
• Reconstructive Surgery

Background:

• Bladder exstrophy is a complex congenital anomaly requiring surgical correction.
• Failed initial closures necessitate further reconstructive procedures, impacting continence outcomes.
• Predicting success in these challenging cases is crucial for patient management.

Purpose of the Study:

• To identify predictors of successful voided continence in bladder exstrophy patients after failed closure.
• To evaluate the role of bladder capacity in outcomes following bladder neck reconstruction (BNR).

Main Methods:

• Retrospective review of patients with failed bladder exstrophy closures undergoing BNR (1979-2007).
• Data collected included number/mode of failures, osteotomy, bladder capacity, and continence status.
• Statistical analysis, including ROC analysis, was used to identify predictive factors.

Main Results:

• Of 52 patients undergoing BNR after failed closures, 46% achieved continence.
• Bladder capacity was the sole significant predictor of voided continence.
• Median bladder capacity was higher in continent patients (100 mL) vs. non-continent (65 mL), p=0.005.
• Optimal pre-BNR bladder capacity cutoff for success was 80-100 mL.

Conclusions:

• Bladder capacity is a key predictor of continence success after BNR in patients with prior failed bladder exstrophy closures.
• These findings align with previous observations in primary closure cases.
• Preoperative assessment of bladder capacity is vital for managing expectations and planning treatment.