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Related Experiment Videos

Anal tonometry: a quick method of anal manometry.

M M Saraiva1, A M Saraiva

  • 1Department of Gastroenterology, Hospital Geral de Santo Antonio, Porto, Portugal.

Diseases of the Colon and Rectum
|May 1, 1991
PubMed
Summary

A new, simple air-flow method accurately measures anal sphincter pressures and pelvic floor function in the proctologic clinic. This accessible technique aids in diagnosing conditions like anal fissure and incontinence.

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Area of Science:

  • Proctology
  • Gastroenterology
  • Pelvic Floor Disorders

Background:

  • Evaluating anal sphincter tonic activity is crucial in proctology.
  • Existing manometric techniques are costly, complex, and not widely available.
  • There's a need for objective, in-office measurements of anal tonic activity.

Purpose of the Study:

  • To introduce and evaluate a simple, cost-effective method for measuring anal pressures and pelvic floor function in an office setting.
  • To assess the utility of this method in differentiating between healthy individuals and patients with proctologic disorders.

Main Methods:

  • A novel method using air flow in an open circuit with a rubber probe and a standard arterial pressure gauge was developed.
  • Key parameters measured include anal resting pressure, squeeze pressure, functional anal canal length, and perineal descent.
  • The technique was validated in 100 healthy individuals and applied to 130 patients with proctologic conditions.

Main Results:

  • Significant differences in anal pressures were observed between healthy controls and patients with anal fissure (higher resting pressures) and anal incontinence (lower resting and/or squeeze pressures).
  • A correlation was established between perineal descent measured by this method and by defecography.
  • The study demonstrated the method's reliability in assessing anal sphincter and pelvic floor function.

Conclusions:

  • This simple, reliable, and rapid air-flow tonometry is a valuable first-line approach for in-office assessment of anal sphincter and pelvic floor function.
  • It provides objective data aiding in the diagnosis and management of various proctologic disorders.
  • The technique is now integrated into routine proctologic examinations due to its practicality and effectiveness.

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