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Detrusor myotomy: a 5-year review in unstable and non-compliant bladders

J M Potter1, P G Duffy, E M Gordon

  • 1Department of Urology, Battle Hospital, Reading, UK.

BJU International
|May 16, 2002
PubMed

Insights

Detrusor myotomy shows best outcomes for children with severe urinary incontinence and unstable detrusor contractions. Urodynamic factors like high detrusor leak-point pressure predict success.

Area of Science:

  • Pediatric Urology
  • Urodynamics
  • Surgical Outcomes

Background:

  • Urinary incontinence in children often requires surgical intervention.
  • Detrusor myotomy is a surgical option for severe cases.
  • Predicting surgical success is crucial for patient management.

Purpose of the Study:

  • To identify urodynamic predictors of clinical success following detrusor myotomy in pediatric patients with urinary incontinence.
  • To evaluate the long-term efficacy of detrusor myotomy.

Main Methods:

  • A cohort of nine children (5-14 years) with severe urinary incontinence underwent detrusor myotomy.
  • Pre-operative urodynamic assessments included bladder compliance and detrusor leak-point pressure.
  • Patients were followed for a minimum of 5 years for clinical outcomes.

Main Results:

  • Two patient subgroups emerged: normal compliance with unstable contractions (3 patients) and low compliance with few contractions (6 patients).
  • Five patients had detrusor leak-point pressures > 40 cmH2O; four had < 40 cmH2O.
  • Only two patients (both with unstable contractions and high leak-point pressure) achieved successful 5-year outcomes; seven remained incontinent.

Conclusions:

  • Detrusor myotomy is most effective in children with marked phasic unstable detrusor contractions and a competent urethral sphincter.
  • High detrusor leak-point pressure (> 40 cmH2O) may indicate a favorable outcome.
  • This procedure may offer advantages in select patient populations compared to other treatments.
Abstract

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