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Related Concept Videos

Gastric Emptying01:16

Gastric Emptying

1.0K
Gastric emptying occurs when the stomach gradually releases chyme into the duodenum. When the stomach is distended, it triggers the release of gastrin, a hormone that promotes gastric acid secretion to aid in digestion. Additionally, stomach distension contributes to peristaltic waves that propel gastric contents toward the pyloric region. The gastroenteric reflex, on the other hand, primarily stimulates peristalsis in the intestines, facilitating the movement of contents further along the...
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Gastric Motility01:16

Gastric Motility

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Gastric motility is the coordinated contraction and relaxation of stomach muscles that convert ingested food into chyme, a semi-liquid substance ready for further digestion in the intestines. The process begins with the vagus nerve inducing the relaxation of the smooth muscles in the fundus and body of the stomach, allowing these regions to expand and accommodate up to approximately 1.5 liters of food and liquid.
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
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Related Experiment Video

Updated: Jul 31, 2025

High-Throughput Analysis of Optical Mapping Data Using ElectroMap
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Optimization of Gastric Pacing Parameters Using High-Resolution Mapping.

S Alighaleh, L K Cheng, T R Angeli-Gordon

    IEEE Transactions on Bio-Medical Engineering
    |May 2, 2023
    PubMed
    Summary
    This summary is machine-generated.

    Gastric pacing using longitudinally oriented electrodes and higher energy effectively initiates and entrains slow waves. Optimal pacing periods between 14-30 seconds advance gastric pacing applications for motility disorders.

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    Area of Science:

    • Gastroenterology
    • Biomedical Engineering
    • Physiology

    Background:

    • Abnormal gastric slow-wave activity is linked to functional motility disorders.
    • Gastric pacing is a potential therapy for these conditions, but optimal parameters require definition.

    Purpose of the Study:

    • To determine optimal parameters for gastric pacing to correct slow-wave abnormalities.
    • To advance the clinical application of gastric pacing.

    Main Methods:

    • In vivo pig studies used high-resolution gastric mapping.
    • Evaluated electrode orientation (longitudinal vs. circumferential), pacing energy, pacing location (corpus vs. antrum), and pacing period (12-36 s).

    Main Results:

    • Longitudinal electrode orientation significantly improved slow-wave initiation and entrainment (86% vs. 10%).
    • High-energy pacing accelerated entrainment compared to low-energy pacing (p < 0.001).
    • A pacing period of 14-30 seconds yielded stable slow-wave initiation and entrainment.

    Conclusions:

    • These findings provide critical data for optimizing gastric pacing strategies.
    • The results will inform future studies and potential human translation for treating motility disorders.