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Urodynamic patterns in children with dysfunctional voiding problems
Insights
Children with dysfunctional voiding exhibit unique patterns of failed detrusor and sphincter coordination. This suggests a persistent developmental phase hindering mature bladder control and continence.
Area of Science:
- Pediatric Urology
- Neuro-urology
- Developmental Pediatrics
Background:
- Dysfunctional voiding (DV) in children is characterized by abnormal coordination during micturition.
- Understanding the underlying mechanisms of DV is crucial for effective treatment.
Purpose of the Study:
- To investigate the specific patterns of intravesical pressure, anal sphincter electromyography, and urinary flow rate in children with DV.
- To elucidate the coordination failures between the detrusor muscle and the urethral sphincter in this population.
Main Methods:
- Simultaneous urodynamic measurements were performed in 17 children diagnosed with dysfunctional voiding.
- Parameters recorded included intravesical pressure, external anal sphincter electromyography, and urinary flow rate.
Main Results:
- Distinct, individualized patterns of failed detrusor-sphincter coordination were observed in all participants.
- A common finding was the inability to achieve coordinated relaxation of the sphincter during detrusor contraction.
Conclusions:
- The observed patterns in children with DV likely represent a persistent transitional phase in the development of micturitional control.
- Forceful external urethral sphincter contraction, intended to prevent wetting, may hinder normal bladder emptying and contribute to DV.
Abstract:
Simultaneous measurements of the intravesical pressure, electromyographic activity of the anal sphincter and the urinary flow rate in 17 children with dysfunctional voiding problems have shown a variety of unusual patterns, each distinct for the particular child but all with the common denominator of failure to coordinate detrusor and sphincter activity. We postulate that these patterns represent persistence of the transitional phase in the development of micturitional control whereby the child learns to prevent involuntary wetting by forceful contraction of the external urethral sphincter.