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Related Experiment Videos

Rectal mucosal electrosensitivity - what is being tested?

A P Meagher1, M L Kennedy, D Z Lubowski

  • 1Colorectal Unit, St. George Hospital, Sydney, Australia.

International Journal of Colorectal Disease
|January 1, 1996
PubMed
Summary
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Rectal mucosal electrosensitivity (RME) testing validity was assessed. Results suggest RME may not accurately measure rectal sensitivity and is influenced by factors like fecal presence and pelvic floor stimulation.

Area of Science:

  • Gastroenterology
  • Physiology
  • Surgical Research

Background:

  • Rectal mucosal electrosensitivity (RME) testing is used to understand constipation and post-rectopexy bowel dysfunction.
  • The reliability of RME testing has been questioned.
  • This study aimed to validate RME testing methods.

Purpose of the Study:

  • To assess the validity of rectal mucosal electrosensitivity (RME) testing.
  • To determine if RME accurately reflects rectal mucosal sensitivity.
  • To investigate factors influencing RME results.

Main Methods:

  • Sixty-eight patients were divided into three groups: anorectal assessment, anastomosis, and stoma.
  • Rectal mucosal electrosensitivity (RME) testing was performed on different rectal wall regions.

Related Experiment Videos

  • RME was also tested with simulated fecal presence (gauze) to assess mucosal contact influence.

    • Main Results:

    • Significant variations in sensitivity were found across different rectal wall regions, suggesting pelvic floor stimulation.
    • Patients with anastomosis had higher sensitivity thresholds than controls.
    • Simulated fecal presence significantly increased the sensitivity threshold, indicating loss of mucosal contact.
    • EMG machine did not detect loss of mucosal contact.

    Conclusions:

    • Rectal mucosal electrosensitivity (RME) testing may not accurately measure rectal mucosal sensitivity.
    • Results suggest RME is likely influenced by factors beyond mucosal sensation, such as pelvic floor stimulation and fecal presence.
    • The validity of RME for diagnosing constipation or assessing post-surgical bowel dysfunction requires re-evaluation.