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The correlation between bladder volume wall index and the pattern of uroflowmetry/external sphincter electromyography

Seyed-Hassan Mostafavi1, Nakysa Hooman, Farideh Hallaji

  • 1Department of Pediatric Radiology, Ali-Asghar Children Hospital, Tehran University of Medical Sciences, Tehran, Iran. hmostafa1@yahoo.com

Journal of Pediatric Urology
|August 9, 2011
PubMed

Insights

Bladder volume wall index (BVWI) does not predict uroflowmetry patterns in children with lower urinary tract dysfunction. However, abnormal bladder sonography and uroflowmetry together correlate with abnormal urodynamics.

Area of Science:

  • Pediatric Urology
  • Diagnostic Imaging
  • Urodynamics

Background:

  • Lower urinary tract dysfunction (LUTD) in children presents diagnostic challenges.
  • Uroflowmetry and bladder sonography are common non-invasive assessments for LUTD.
  • The bladder volume wall index (BVWI) is a sonographic parameter proposed to assess bladder wall characteristics.

Purpose of the Study:

  • To investigate the correlation between the bladder volume wall index (BVWI) and uroflowmetry patterns in children with LUTD.
  • To determine if BVWI can predict uroflowmetry findings in pediatric lower urinary tract malfunction.
  • To explore the association of combined sonographic and uroflowmetric findings with urodynamic results.

Main Methods:

  • A study involving 91 children (4-15 years) with bladder dysfunction and 59 healthy controls.
  • Uroflowmetry, kidney and bladder sonography, and urodynamic studies (in symptomatic cases) were performed.
  • BVWI was calculated and expressed as a percentage of expected values; 70%-130% was considered normal.

Main Results:

  • Uroflowmetry was significantly more abnormal in children with LUTD compared to controls (P < 0.05).
  • No significant relationship was found between BVWI and uroflowmetry patterns in either cases or controls (P > 0.05).
  • Combined abnormal bladder sonography and uroflowmetry showed a significant association with abnormal urodynamic findings (P < 0.05).

Conclusions:

  • BVWI is not a reliable predictor of uroflowmetry patterns in pediatric lower urinary tract dysfunction.
  • The combination of abnormal bladder sonography and uroflowmetry is associated with abnormal urodynamic studies in children.
  • Further research may refine the role of sonographic parameters in evaluating pediatric LUTD.
Abstract

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