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Bladder dysfunction: diagnosis with dynamic US

Maria F Tereza F Filgueiras1, Eleonora M Lima, Talitah M Sanchez

  • 1Radiology Unit of Hospital das Clinical, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. terezafilgueiras@terra.com.br

Radiology
|April 5, 2003
PubMed

Insights

Dynamic ultrasonography (US) effectively diagnoses bladder dysfunction by accurately assessing bladder capacity and residual urine. This sensitive imaging technique shows high accuracy in detecting detrusor activity and urine leakage, comparable to standard urodynamic studies.

Area of Science:

  • Pediatric Urology
  • Diagnostic Imaging
  • Urodynamics

Background:

  • Bladder dysfunction diagnosis often relies on urodynamic studies.
  • Dynamic ultrasonography (US) offers a non-invasive alternative for evaluating bladder function.

Purpose of the Study:

  • To assess the diagnostic utility of dynamic US for bladder dysfunction.
  • To compare dynamic US findings with standard urodynamic study results.

Main Methods:

  • Seventy-one paired examinations in 63 pediatric patients were analyzed.
  • Dynamic US evaluated detrusor activity, bladder capacity, and residual urine during natural filling.
  • Urodynamic studies were performed within 6 months for comparison.

Main Results:

  • No significant difference in bladder capacity was found between dynamic US and urodynamic study (P =.12).
  • Dynamic US demonstrated high sensitivity (97.7%) and specificity (100%) for detecting substantial residual urine.
  • Sensitivity and specificity for detecting involuntary detrusor contractions were 93.0% and 88.9%, respectively.

Conclusions:

  • Dynamic ultrasonography is a highly sensitive diagnostic tool for bladder dysfunction in children.
  • Dynamic US provides accurate assessments of bladder capacity, residual urine, and detrusor activity.
Abstract

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