Abnormal gastric slow waves in patients with functional dyspepsia assessed by multichannel electrogastrography

X. Lin, J. D.Z. Chen

Research output: Contribution to journalArticlepeer-review

93 Scopus citations


The aim of this study was to utilize multichannel electrogastrography to investigate whether patients with functional dyspepsia had impaired propagation or coordination of gastric slow waves in the fasting state compared with healthy controls. The study was performed in 10 patients with functional dyspepsia and 11 healthy subjects. Gastric myoelectrical activity was measured by using surface electrogastrography with a specially designed four-channel device. The study was performed for 30 min or more in the fasting state. Special computer programs were developed for the computation of the propagation and coupling of the gastric slow wave. It was found that, compared with the healthy controls, the patients showed a significantly lower percentage of slow wave propagation (58.0 ± 8.9 vs. 89.9 ± 2.6%, P < 0.002) and a significantly lower percentage of slow wave coupling (46.9 ± 4.4 vs. 61.5 ± 6.9%, P < 0.04). In addition, the patients showed inconsistencies in the frequency and regularity of the gastric slow wave among the four-channel electrogastrograms (EGGs). It was concluded that patients with functional dyspepsia have impaired slow wave propagation and coupling. Multichannel EGG has more information than single-channel EGG for the detection of gastric myoelectrical abnormalities.

Original languageEnglish (US)
Pages (from-to)G1370-G1375
JournalAmerican Journal of Physiology - Gastrointestinal and Liver Physiology
Issue number6 43-6
StatePublished - 2001
Externally publishedYes


  • Gastric emptying
  • Gastric motility
  • Gastric myoelectrical activity
  • Gastroparesis
  • Stomach

ASJC Scopus subject areas

  • Physiology
  • Hepatology
  • Gastroenterology
  • Physiology (medical)


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