Changing concepts in the urodynamic evaluation of children

Area of Science:

• Pediatric Urology
• Neuro-urology
• Clinical Diagnostics

Background:

• Pediatric voiding dysfunction encompasses various conditions including myelodysplasia, spinal cord injury, and recurrent urinary tract infections.
• Accurate urodynamic assessment is crucial for understanding bladder function and guiding treatment in children with complex neurological and urological issues.

Purpose of the Study:

• To evaluate the correlation between clinical neurological level and cystometric patterns in children with spinal cord lesions.
• To investigate the impact of bladder-external sphincter dyssynergia on post-void residual urine in children with hypertonic and hypotonic bladders.
• To assess the relationship between reported urinary symptoms and urodynamic findings.

Main Methods:

• Urodynamic evaluation in 46 children with diverse urological conditions.
• Simultaneous recording of intra-abdominal and intravesical pressures with external urethral sphincter electromyography.
• Selective performance of urethral pressure profile, urinary flow rate, and anal sphincter electromyography.

Main Results:

• No correlation was found between the clinical neurological level and cystometric patterns in spinal cord lesion patients.
• Bladder-external sphincter dyssynergia was linked to high post-void residual urine in hypertonic bladders, but not in hypotonic bladders.
• Urinary symptoms showed a weak correlation with urodynamic findings.

Conclusions:

• The study highlights the nuanced relationship between bladder-external sphincter dyssynergia and post-void residual urine based on bladder tone.
• The limited correlation between symptoms and urodynamic data underscores the need for thorough evaluation in children with persistent micturition disturbances.
• Comprehensive urodynamic assessment is recommended for children with ongoing voiding problems to ensure accurate diagnosis and management.