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Related Experiment Videos

Relationship between swallow rate and salivary flow.

Y V Kapila, W J Dodds, J F Helm

    Digestive Diseases and Sciences
    |June 1, 1984
    PubMed
    Summary

    Salivary flow directly influences spontaneous swallowing rates in healthy individuals. Increased salivation, like from peppermint lozenges, boosts swallowing frequency, suggesting potential heartburn relief strategies.

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    Area of Science:

    • Gastroenterology
    • Physiology

    Background:

    • Swallow-induced peristalsis is crucial for esophageal acid clearance.
    • Factors regulating spontaneous swallowing rate in healthy subjects are not fully understood.

    Purpose of the Study:

    • To investigate the hypothesis that salivary flow rate influences spontaneous swallowing rate.
    • To explore potential therapeutic applications for heartburn relief.

    Main Methods:

    • 60 studies conducted on 10 healthy volunteers (ages 10-30).
    • Salivary flow measured by expectoration; swallowing rate recorded via transnasal catheter and cervical electrodes.
    • Evaluated effects of pharyngeal intubation, dummy lozenge, peppermint lozenge, bethanechol, and atropine on salivation and swallowing.

    Main Results:

    • Pharyngeal intubation slightly increased salivation and swallowing rates.
    • Peppermint lozenges significantly increased salivary flow (sixfold) and swallowing rate (doubled).
    • Bethanechol increased both salivary flow and swallowing; atropine decreased both.

    Conclusions:

    • Salivary flow rate directly influences spontaneous swallowing rate in awake, healthy individuals.
    • Oral lozenges, by increasing salivary flow and swallowing, may offer ancillary treatment for heartburn.

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