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[Anal sphincter function and recto-anal continence].

R Kuhlbusch, J F Erckenbrecht

    Leber, Magen, Darm
    |July 1, 1987
    PubMed
    Summary
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    Fecal incontinence can stem from anal sphincter motor function issues in about half of patients. The ability to increase sphincter pressure when squeezing is more crucial for continence than resting pressure.

    Area of Science:

    • Gastroenterology
    • Physiology

    Context:

    • Fecal incontinence arises from complex motor, sensory, and anatomical factors.
    • Dysfunction in these mechanisms can lead to fecal incontinence.

    Purpose:

    • To investigate the contribution of internal and external anal sphincter motor function disturbances to fecal incontinence pathogenesis.
    • To compare anal sphincter pressures in patients with fecal incontinence and continent controls.

    Summary:

    • Basal and squeeze anal sphincter pressures did not significantly differ between incontinent and continent groups.
    • However, 8 out of 16 incontinent patients demonstrated inadequate external anal sphincter pressure increase upon squeezing.
    • This suggests motor function disturbances contribute to fecal incontinence in approximately 50% of cases.

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    Impact:

    • The study highlights that impaired anal sphincter motor function is a contributing factor in about half of fecal incontinence cases.
    • It emphasizes that the dynamic increase in sphincter pressure during squeezing is more critical for recto-anal continence than static pressure levels.