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Normalization of Dyssynergic Bear Down Patterns in the Seated Position Predicts Normal Balloon Expulsion Testing on

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Summary

Evaluating defecation disorders using anorectal manometry (ARM) in a seated position may improve diagnostic accuracy. This method showed a higher likelihood of successful, rapid bowel evacuation testing (BET).

Keywords:
anorectal manometryballoon expulsion testingdyssynergic defecationfunctional defecation disorderspelvic floor disorders

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Area of Science:

  • Gastroenterology
  • Physiology
  • Diagnostic Medicine

Background:

  • Anorectal manometry (ARM) is typically performed in the left lateral decubitus (LLD) position to assess defecation.
  • The seated position may offer a more functional and accurate assessment of defecation dynamics.

Purpose of the Study:

  • To compare the diagnostic utility of ARM in the seated versus LLD position for defecation disorders.
  • To determine if the seated position improves prediction of successful bowel evacuation testing (BET).

Main Methods:

  • 384 adult patients undergoing ARM were evaluated for dyssynergia in both LLD and seated positions.
  • Logistic regression analysis was used to assess the association between testing position and BET outcomes.

Main Results:

  • A significant normalization of dyssynergic patterns was observed in the seated position (3.9% of patients).
  • Patients assessed in the seated position had substantially higher odds of successful BET (OR 30.31, p<0.0001).

Conclusions:

  • The seated position for ARM may be a more reliable predictor of successful BET.
  • Incorporating a seated assessment during ARM could enhance diagnostic accuracy for patients with defecation disorders.