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Detrusor Underactivity Model in Rats by Conus Medullaris Transection
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Published on: August 28, 2020

Different evolution of voiding function in underactive bladders with and without detrusor overactivity.

Antonio Cucchi1, Silvana Quaglini, Bruno Rovereto

  • 1Divisione di Urologia, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo, Pavia, Italy. c.cucchi1@virgilio.it

The Journal of Urology
|November 17, 2009
PubMed
Summary
This summary is machine-generated.

Patients with idiopathic detrusor underactivity and detrusor overactivity showed improved bladder voiding function over time. This suggests detrusor overactivity may partially compensate for bladder underactivity, improving voiding efficiency.

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Area of Science:

  • Urology
  • Nephrology
  • Physiology

Background:

  • Idiopathic detrusor underactivity (IDUA) presents challenges in bladder voiding function.
  • The coexistence of detrusor overactivity (DO) in patients with IDUA may influence disease progression.
  • Understanding the temporal evolution of bladder function in these patients is crucial for management.

Purpose of the Study:

  • To assess and compare the evolution of bladder voiding function in men with IDUA, with and without coexisting DO.
  • To investigate the impact of DO on the natural history of IDUA.
  • To identify urodynamic parameters that differentiate the progression of voiding dysfunction.

Main Methods:

  • Retrospective analysis of clinical and urodynamic data from 36 middle-aged men with IDUA.
  • Urodynamic testing at two time points (Time 1 and Time 2, median 45 months apart) to assess changes in bladder function.
  • Patients were categorized into two groups: those with urgency and DO (Group 1) and those without urgency or DO (Group 2).
  • Comparison with 30 age-matched healthy controls (Group 3).

Main Results:

  • Both IDUA groups exhibited lower bladder emptying efficiency and contractility compared to controls at Time 1.
  • Group 1 (with DO) showed higher contraction velocity and energy reserve than Group 2.
  • By Time 2, both IDUA groups showed worsening International Prostate Symptom Score and decreased bladder contractility and emptying efficiency, with less deterioration in Group 1.

Conclusions:

  • Detrusor overactivity may partially compensate for idiopathic detrusor underactivity by enabling faster detrusor contractions.
  • This compensatory mechanism potentially reduces the time and energy required for micturition, leading to a relatively better evolution of bladder voiding function over time.
  • The findings suggest a complex interplay between IDUA and DO influencing long-term bladder outcomes.