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Pyloric reflux: a duodenal functional problem?

N Pandolfo, C Nebiacolombo, M Bortolotti

    Scandinavian Journal of Gastroenterology. Supplement
    |January 1, 1979
    PubMed
    Summary
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    Duodeno-gastric (D.G.) reflux patients show higher duodenal motility index and lower coordinated wave frequency compared to healthy individuals. These findings suggest duodenal hyperkinetic-dyskinetic disturbances contribute to D.G. reflux.

    Area of Science:

    • Gastroenterology
    • Physiology

    Background:

    • Duodeno-gastric (D.G.) reflux is a condition where bile and intestinal contents flow back into the stomach.
    • The role of duodenal motor activity in the pathophysiology of D.G. reflux is not fully understood.

    Purpose of the Study:

    • To investigate and compare duodenal motor activity in patients with D.G. reflux and healthy volunteers.
    • To identify potential manometric abnormalities in the duodenum associated with D.G. reflux.

    Main Methods:

    • Manometric study of duodenal motor activity using an open-tip probe with three catheters.
    • Data collection in 8 D.G. reflux patients and 5 healthy volunteers.
    • Analysis of Motility Index (M.I.) and percentage of coordinated waves in basal and prostigmine-stimulated conditions.

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    Main Results:

    • D.G. reflux patients exhibited a significantly higher Motility Index (M.I.) in the duodenum compared to controls.
    • The frequency of coordinated duodenal waves was lower in D.G. reflux patients than in healthy subjects.
    • These differences were observed in basal conditions and after prostigmine stimulation.

    Conclusions:

    • Patients with D.G. reflux demonstrate hyperkinetic-dyskinetic disturbances of duodenal motor activity.
    • The duodenum appears to play a significant role in the development and maintenance of D.G. reflux.
    • Abnormal duodenal motility may be a contributing factor to D.G. reflux pathophysiology.