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Urinary Bladder Distention Evoked Visceromotor Responses as a Model for Bladder Pain in Mice
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Rectal distension: the effect on bladder function.

D C Panayi1, V Khullar, G A Digesu

  • 1Department of Urogynaecology, St. Mary's Hospital, London, UK. drpanayi@gmail.com

Neurourology and Urodynamics
|January 27, 2011
PubMed
Summary
This summary is machine-generated.

Rectal distension significantly lowers bladder volumes for first desire, strong desire, and maximum capacity. This can alter urodynamics diagnosis, particularly for overactive bladder symptoms.

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Area of Science:

  • Urology
  • Gynecology
  • Gastroenterology

Background:

  • Urodynamic testing is crucial for diagnosing lower urinary tract symptoms.
  • The influence of rectal distension on urodynamics is not fully understood.
  • Accurate urodynamic assessment requires minimizing confounding factors.

Purpose of the Study:

  • To evaluate the impact of rectal distension on urodynamic parameters.
  • To determine if rectal distension affects urodynamic diagnosis.

Main Methods:

  • Thirty women underwent filling cystometry with and without rectal balloon distension (150 ml saline).
  • Bladder volumes for first desire, strong desire, and capacity were recorded.
  • Urodynamic diagnoses were compared between conditions.

Main Results:

  • Rectal distension significantly reduced bladder volumes for first desire (46%), strong desire (33%), and maximum capacity (26%).
  • In 13% of patients with a history of overactive bladder, detrusor overactivity was diagnosed only when the rectum was distended.

Conclusions:

  • Rectal distension alters bladder sensation and perceived bladder capacity.
  • Rectal distension can change urodynamic diagnosis, potentially leading to misdiagnosis or identification of previously undetected conditions.