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Related Experiment Videos

Is the volume retained after defecation a valuable parameter at defecography?

K H Ting1, E Mangel, B Eibl-Eibesfeldt

  • 1Medizinische und Chirurgische Klinik, Klinikum Innenstadt, Ludwig-Maximilians University, Munich, Germany.

Diseases of the Colon and Rectum
|August 1, 1992
PubMed
Summary

This study found that defecography findings do not predict the amount of retained barium or the sensation of incomplete emptying. However, specific conditions like rectocele or intussusception can localize where the remaining barium is found.

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Area of Science:

  • Gastroenterology
  • Colorectal Surgery
  • Radiology

Background:

  • Incomplete rectal emptying is a common patient complaint.
  • Defecography is a key imaging modality for evaluating anorectal function.
  • The relationship between defecographic findings and the sensation of incomplete emptying requires further clarification.

Purpose of the Study:

  • To correlate retained barium volume on defecography with specific defecographic findings.
  • To investigate the relationship between retained volume and the subjective sense of incomplete evacuation.
  • To determine if anorectal manometry parameters correlate with the sensation of incomplete emptying.

Main Methods:

  • Analysis of 170 defecographic series.
  • Planimetric estimation of retained barium volume.

Related Experiment Videos

  • Correlation with defecographic findings, patient-reported incomplete emptying, and anorectal manometry data.

    • Main Results:

    • No specific defecographic finding was associated with a higher or lower retained barium volume.
    • The sense of incomplete evacuation did not correlate with the amount of retained barium.
    • Anorectal manometry thresholds for urge and perception did not differ between patients with or without the sensation of incomplete emptying.
    • Rectocele and internal prolapse localized retained volume to the lower rectum.
    • Intussusception localized retained volume to the middle or upper rectum.

    Conclusions:

    • Defecographic findings generally do not explain the amount of retained volume or the sensation of incomplete emptying.
    • Specific defecographic findings, such as rectocele or intussusception, can influence the location of retained barium.
    • The subjective feeling of incomplete emptying may not be directly explained by objective defecographic measurements.