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Related Experiment Videos

Relation between postprandial gastric emptying and cutaneous electrogastrogram in primates.

S Bruley des Varannes1, M Mizrahi, A Dubois

  • 1Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda 20814-4799.

The American Journal of Physiology
|August 1, 1991
PubMed
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The cutaneous electrogastrogram (EGG) amplitude, not frequency, correlates with solid gastric emptying in rhesus monkeys. EGG reflects caloric content differences, suggesting it as an indirect measure of gastric emptying.

Area of Science:

  • Gastroenterology
  • Physiology
  • Medical Imaging

Background:

  • The cutaneous electrogastrogram (EGG) is a non-invasive method to assess gastric electrical activity.
  • Gastric emptying is a crucial determinant of nutrient absorption and gastrointestinal function.
  • Understanding the relationship between EGG and gastric emptying is important for diagnosing motility disorders.

Purpose of the Study:

  • To investigate the relationship between cutaneous electrogastrogram (EGG) parameters and gastric emptying in rhesus monkeys.
  • To determine if EGG amplitude and frequency correlate with the rate of gastric emptying after meals of varying caloric content.

Main Methods:

  • Gastric emptying was measured using scintigraphy after administering 1.5 and 5.0 kcal/kg mixed meals.
  • Cutaneous electrogastrograms (EGG) were recorded from six epigastric bipolar electrodes.

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  • Microwave motion sensors were used to detect and exclude motion artifacts from EGG signals.

    • Main Results:

    • Gastric emptying was faster after the 1.5 kcal/kg meal compared to the 5.0 kcal/kg meal.
    • EGG amplitude increased significantly post-meal only after the 1.5 kcal/kg meal.
    • EGG amplitude showed a significant positive correlation with solid gastric emptying across all animals.

    Conclusions:

    • Cutaneous electrogastrogram (EGG) amplitude, but not frequency, is significantly correlated with solid gastric emptying.
    • EGG responses differ based on meal caloric content, suggesting its utility as an indirect index of gastric emptying.
    • These findings highlight the potential of EGG as a non-invasive tool for assessing gastric motility.