Multichannel magnetogastrogram: a clinical marker for pediatric chronic nausea

Area of Science:

• Gastroenterology
• Pediatric functional gastrointestinal disorders
• Biomedical engineering

Background:

• Chronic nausea is a common, subjective functional disease in children.
• High-resolution electrogastrogram (HR-EGG) is a sensitive, noninvasive tool for detecting gastric slow wave abnormalities.
• Magnetogastrogram (MGG) may offer enhanced precision for gastric slow wave analysis.

Purpose of the Study:

• To evaluate if MGG recordings provide supplementary information to HR-EGG in pediatric patients with chronic nausea.
• To compare gastric slow wave properties between children with chronic nausea and healthy controls using MGG and HR-EGG.

Main Methods:

• Simultaneous pre- and postprandial MGG and HR-EGG recordings were obtained in pediatric patients with chronic nausea and healthy subjects.
• Nausea intensity and severity were measured.
• Gastric slow wave properties including dominant frequency, power, and propagation direction were analyzed.

Main Results:

• Patients with nausea showed reduced postprandial dominant frequency and normogastric power, and increased postprandial bradygastric power in both MGG and HR-EGG.
• MGG detected lower preprandial normogastric power in patients.
• Significant differences in preprandial slow wave propagation direction were observed between patients and controls in both MGG and HR-EGG.

Conclusions:

• MGG and HR-EGG are valuable noninvasive tools for assessing gastric slow wave activity in pediatric chronic nausea.
• MGG data can potentially refine HR-EGG for future machine-learning applications in functional nausea diagnosis.
• These quantifiable measures can aid in personalized diagnosis and treatment, minimizing costs and radiation.