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Related Experiment Videos

Rectodynamics--quantifying rectal evacuation.

M A Kamm1, C I Bartram, J E Lennard-Jones

  • 1St. Mark's Hospital, UK.

International Journal of Colorectal Disease
|August 1, 1989
PubMed
Summary

A new technique quantifies rectal evacuation using barium paste and a weight transducer. This method reveals normal rapid and complete evacuation, contrasting with variable disturbances in severe constipation patients.

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Area of Science:

  • Gastroenterology
  • Physiology

Background:

  • Defecation is a complex physiological process.
  • Quantifying rectal evacuation is crucial for diagnosing defecation disorders.

Purpose of the Study:

  • To introduce a novel technique for graphic quantitation of voluntary rectal evacuation.
  • To assess the efficacy of this technique in differentiating normal and abnormal evacuation patterns.

Main Methods:

  • Subjects voluntarily evacuated 100 ml of barium sulphate paste.
  • A weight transducer measured evacuation dynamics.
  • Key parameters included maximum emptying rate, time to maximum emptying, and proportion evacuated.

Main Results:

  • Normal subjects exhibited rapid and complete rectal evacuation.
  • Patients with severe constipation showed variable disturbances in evacuation patterns.
  • The technique successfully differentiated between normal and impaired evacuation.

Conclusions:

  • The described technique provides a reliable graphic quantitation of voluntary rectal evacuation.
  • This method aids in the objective assessment of defecation disorders, particularly severe constipation.

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