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Bladder function and dysfunction in exstrophy and epispadias
J G Hollowell1, P D Hill, P G Duffy
1Department of Paediatric Urology, St Peter's Hospitals, London, UK.
Insights
Bladder exstrophy and epispadias evaluation reveals impaired bladder function after surgery. Detailed functional testing is crucial for managing these congenital urinary tract abnormalities.
Area of Science:
- Pediatric Urology
- Congenital Abnormalities
- Lower Urinary Tract Function
Background:
- Bladder exstrophy and epispadias are congenital urinary tract abnormalities.
- Previous bladder function evaluation before and after reconstruction is limited.
- Optimal treatment strategies require better understanding of bladder function.
Purpose of the Study:
- To prospectively evaluate lower urinary tract function in children with bladder exstrophy and epispadias.
- To assess bladder function before and after bladder-neck reconstruction.
- To identify factors contributing to persistent urinary leakage and upper urinary tract damage.
Main Methods:
- Prospective study of 36 children (1.5–16 years) with bladder exstrophy and epispadias.
- Lower urinary tract function assessed by cystometry and cystography.
- Upper urinary tract evaluation using ultrasound imaging.
Main Results:
- Normal bladder function observed in primary epispadias cases.
- Conventional bladder-neck surgery for continence severely impaired bladder function.
- Involuntary bladder contractions identified as a cause of persistent urine leakage.
- Abnormalities may hinder bladder capacity development and cause upper urinary tract damage.
Conclusions:
- Conventional bladder-neck surgery may not be the optimal treatment for bladder exstrophy and epispadias.
- Closed exstrophy bladders do not achieve normal function.
- Involuntary bladder contractions are a significant issue post-surgery.
- Routine detailed functional testing is recommended for these patients.
Abstract:
Bladder exstrophy and epispadias are congenital abnormalities of the urinary bladder. Evaluation of bladder function before and after bladder-neck reconstruction has not been done in patients with these conditions. We report the preliminary results of a prospective study of lower-urinary-tract function in 36 children (10 girls, 26 boys; age range 1.5-16 years) with bladder exstrophy and epispadias. Children's bladder function was measured by cystometry and cystography, and their upper urinary tracts were examined by ultrasound imaging. Normal bladder function was seen in children with primary epispadias but this was severely impaired in children who had had conventional bladder-neck surgery for continence, implying that this may not be the optimal treatment. Contrary to current assumption, children with closed exstrophy bladders are not capable of normal function, and the abnormalities we identified may be a major cause of upper-urinary-tract damage and may impair development of bladder capacity. Although unrecognised in the past, involuntary bladder contractions are a primary cause of urine leakage persisting in children with exstrophy and epispadias after continence surgery. Detailed functional testing should become a routine part of the evaluation of children with exstrophy and epispadias.
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