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Adolescent Normative Intervals for Body Surface Gastric Mapping: Spectral Analysis.

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Summary
This summary is machine-generated.

This study establishes normative reference intervals for body surface gastric mapping (BSGM) in adolescents. These findings provide crucial benchmarks for interpreting gastric myoelectrical activity in young individuals.

Keywords:
adolescentbody surface gastric mapping (BSGM)diagnosticspediatricphenotypesreference intervals

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Area of Science:

  • Gastroenterology
  • Physiology
  • Medical Devices

Background:

  • Body surface gastric mapping (BSGM) non-invasively assesses gastric myoelectrical activity.
  • Normative intervals in adults have aided clinical decision-making and phenotype development.
  • Establishing adolescent-specific reference intervals is essential for accurate interpretation.

Purpose of the Study:

  • To establish normative reference intervals for key BSGM metrics in healthy adolescents.
  • To provide a basis for interpreting gastric myoelectrical activity in pediatric populations.
  • To support research and clinical decision-making in adolescent gastroenterology.

Main Methods:

  • Recruited healthy adolescents aged 12-17 years (BMI ≤ 35 kg/m²).
  • Utilized Gastric Alimetry for 30-min fasting and 4-h postprandial recordings after a 480-kcal meal.
  • Calculated reference intervals for Principal Gastric Frequency (PGF), BMI-adjusted amplitude, Gastric Alimetry Rhythm Index (GA-RI), and fed:fasted amplitude ratio (ff-AR).

Main Results:

  • Included 107 participants (52.8% female, median age 14).
  • Established single normative reference intervals as no significant correlations with demographics were found.
  • Median PGF: 3.06 cpm (2.72-3.37), BMI-adjusted amplitude: 37.80 μV (20.0-72.0), GA-RI: 0.51 (≥0.22), ff-AR: 2.12 (≥1.0).

Conclusions:

  • Presents the first normative reference intervals for BSGM spectral metrics in adolescents.
  • These intervals are vital for interpreting gastric myoelectrical activity in research and clinical settings.
  • Facilitates improved diagnosis and management of gastrointestinal disorders in pediatric populations.