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Updated: Jun 28, 2026

Detrusor Underactivity Model in Rats by Conus Medullaris Transection
Published on: August 28, 2020
[Neuropathic bladder dysfunction]
1Instytut Pomnik-Centrum Zdrowia Dziecka, Warszawa, Klinika Urologii Dziecigcej. l.b.wlodarscy@xl.wp.pl
Insights
Pelvic floor function changes after spinal cord defect closure, impacting bladder control. Early intervention with intermittent catheterization and urodynamic evaluation improves outcomes for affected newborns.
Area of Science:
- Urology
- Pediatric Surgery
- Neurology
Context:
- Spinal cord defect closure can alter pelvic floor function, leading to bladder dysfunction in newborns.
- Newborns often have residual urine post-voiding, necessitating management strategies.
- Bladder dysfunction patterns evolve within the first year, potentially causing complications like reflux and hydronephrosis.
Purpose:
- To highlight the importance of understanding pelvic floor functional changes post-spinal cord defect closure.
- To emphasize the need for early urodynamic evaluation and residual urine assessment.
- To underscore the benefits of anticholinergics and clean intermittent catheterization (CIC) in managing bladder dysfunction.
Summary:
- Post-spinal cord defect closure, pelvic floor overactivity can develop, leading to bladder-sphincter dyssynergy.
- Early urodynamic evaluation and residual urine assessment are crucial for identifying and managing bladder dysfunction.
- Anticholinergics and CIC demonstrate significant success in treating reflux and improving bladder function.
Impact:
- Early detection and management of bladder dysfunction can prevent serious complications like reflux and hydronephrosis.
- Improved bladder volume, compliance, and reduced leak point pressure are observed with successful treatment.
- This approach optimizes long-term bladder health and quality of life for children with spinal cord defects.
Abstract:
The knowledge that after closure of the spinal cord defect, function of pelvic floor can change from hypocontractility to overactivity within the first months of life, is very important for successful treatment. All newborns at that time have residual urine after a spontaneous void. The most authors therefore recommend to start all newborns on intermittent catheterisation every 3 hours. The pattern of bladder dysfunction (Sillen 1996) changes within the first year of life towards moderate or severe overactivity with accompanying bladder-sphincter dyssynergy. Bauer (2000) observed that 14% of children with synergy initially deteriorated due to a conversion to dyssynergy, 30% of infants with absent sphincter activity in the beginning developed reflux or hydronehrosis due to denervation fibrosis of the external sphincter and high outlet resistance. One third of these changes were seen before one year of age, but 82% before age two. From these reasons highly beneficial is immediately, after closure of spinal cord defect, to perform ultrasound examination with calculation of residual urine and urodynamic evaluation. It clearly proves the beneficial role of anticholinergics and CIC with 63% of refluxes treated successfully. In patients whose reflux resolved bladder volume and bladder compliance improved and leak point pressure was markedly reduced.
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