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Related Experiment Videos

Learned voiding dysfunction (non-neurogenic, neurogenic bladder) among adults.

A Groutz1, J G Blaivas, C Pies

  • 1Weill Medical College, Cornell University, New York, New York, USA.

Neurourology and Urodynamics
|June 1, 2001
PubMed
Summary

Learned voiding dysfunction affects 2% of adults with lower urinary tract symptoms. This condition, characterized by specific voiding patterns and sphincter activity, is often overlooked but warrants further investigation.

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Area of Science:

  • Urology
  • Neuro-urology
  • Lower Urinary Tract Symptoms

Background:

  • Learned voiding dysfunction (Hinman syndrome) is poorly understood in adults.
  • Limited data exists on its prevalence and clinical features in this population.

Purpose of the Study:

  • To determine the prevalence of learned voiding dysfunction in adults presenting with lower urinary tract symptoms.
  • To describe the clinical characteristics of this patient group.

Main Methods:

  • Retrospective review of a urodynamic database of 1,015 adult patients.
  • Diagnosis based on clinical history, uroflowmetry, and video-urodynamics (EMG/fluoroscopy) confirming external urethral sphincter dyssynergia during micturition.
  • Exclusion of neurological or anatomical abnormalities.

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Main Results:

  • Twenty-one patients (2%) met strict criteria for learned voiding dysfunction (age 24-76).
  • Obstructive symptoms were most common, followed by frequency, nocturia, and urgency.
  • Eight patients (35%) had recurrent UTIs; women predominated.
  • Lower first sensation volume in women; higher detrusor pressures in men.
  • No significant upper tract damage observed.

Conclusions:

  • Learned voiding dysfunction affects approximately 2% of adults evaluated for lower urinary tract symptoms.
  • The prevalence may be underestimated as not all patients underwent video-urodynamics.
  • Clinical suspicion and urodynamic evaluation are crucial for diagnosis.