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Constructing trials to show whether urodynamic studies are necessary in lower urinary tract dysfunction.

J L H Ruud Bosch1, Linda Cardozo, Hashim Hashim

  • 1Department of Urology, University Medical Centre Utrecht, Utrecht, The Netherlands. j.l.h.r.bosch@umcutrecht.nl

Neurourology and Urodynamics
|June 11, 2011
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Summary

Urodynamic studies (UDS) are valuable for investigating new treatments and unclear diagnoses of lower urinary tract dysfunction. However, UDS are not generally necessary before conservative treatments or initial surgeries for conditions like incontinence or overactive bladder.

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Area of Science:

  • Urology
  • Diagnostic Imaging
  • Clinical Evidence Synthesis

Background:

  • Lower urinary tract dysfunction (LUTD) encompasses a range of conditions affecting bladder and bowel function.
  • Urodynamic studies (UDS) are diagnostic tools used to evaluate LUTD.
  • The necessity and optimal application of UDS in various clinical scenarios remain subjects of ongoing discussion and research.

Purpose of the Study:

  • To review existing evidence on the utility of urodynamic studies (UDS) in the evaluation of lower urinary tract dysfunction (LUTD).
  • To determine the necessity of conducting further trials to establish the definitive role of UDS in specific clinical contexts.
  • To provide evidence-based recommendations on the appropriate use of UDS in managing conditions such as urinary incontinence, benign prostatic obstruction, overactive bladder, and urogenital prolapse.

Main Methods:

  • A literature review of the PubMed/Medline database (January 1966 to August 2010) was conducted.
  • Expert presentations synthesized evidence on UDS utility in evaluating conditions, predicting treatment outcomes, complications, and cost-effectiveness.
  • A think tank discussion among urology experts formed the basis for this manuscript.

Main Results:

  • Evidence supports the utility of UDS in specific patient groups, including men post-radical prostatectomy and in cases of diagnostic uncertainty.
  • UDS were found to be generally unnecessary prior to conservative management (e.g., pelvic floor muscle training, medical therapy) for overactive bladder (OAB) and lower urinary tract symptoms/benign prostatic obstruction (LUTS/BPO).
  • The utility of UDS before surgical treatment for primary female stress urinary incontinence (SUI) and urogenital prolapse was not clearly established by current evidence.

Conclusions:

  • Urodynamic studies (UDS) are indicated for exploring novel treatment modalities and confirming diagnoses when in doubt.
  • UDS are not typically required before initiating conservative treatments for LUTS/BPO or OAB, or for primary surgical interventions for female SUI or prolapse.
  • Randomized controlled trials (RCTs) using non-inferiority designs are recommended to further investigate the role of UDS before surgical treatment for prostate conditions, SUI, or OAB.