Electrogastrography: a document prepared by the gastric section of the American Motility Society Clinical GI Motility Testing Task Force

The objective of this document is to present the consensus opinion of the American Motility Society Clinical GI Motility Testing Task Force on the performance and clinical utility of electrogastrography (EGG). EGG is a non‐invasive means of recording human gastric myoelectrical activity or slow wave...

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Bibliographic Details
Published in:Neurogastroenterology and motility 2003-04, Vol.15 (2), p.89-102
Main Authors: Parkman, H. P., Hasler, W. L., Barnett, J. L., Eaker, E. Y.
Format: Article
Language:English
Subjects:
Digestive System Physiological Phenomena
electrogastrography
Electromyography - instrumentation
Electromyography - methods
Electromyography - standards
Electromyography - trends
gastric emptying
gastric slow wave
Gastrointestinal Diseases - diagnosis
Gastrointestinal Diseases - physiopathology
Gastrointestinal Motility - physiology
Humans
Muscle, Smooth - physiology
nausea and vomiting
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Summary:The objective of this document is to present the consensus opinion of the American Motility Society Clinical GI Motility Testing Task Force on the performance and clinical utility of electrogastrography (EGG). EGG is a non‐invasive means of recording human gastric myoelectrical activity or slow waves from cutaneous leads placed over the stomach. In healthy volunteers, EGG tracings exhibit sinusoidal waveforms with a predominant frequency of 3 cycles per minute (cpm). Clinical studies have shown good correlation of these cutaneous recordings with those acquired from serosally implanted electrodes. The amplitude of the EGG waveform increases with ingestion of caloric or non‐caloric meals. Some patients with nausea, vomiting, or other dyspeptic symptoms exhibit EGG rhythm disturbances or blunting of meal‐evoked EGG signal amplitude increases. These abnormalities correlate to some degree with delayed gastric emptying of solids. In selected patients, EGG may be complementary to gastric emptying testing. To date, no therapies have convincingly demonstrated in controlled studies that correcting abnormalities detected by EGG improves upper gastrointestinal symptoms. Proposed clinical indications for performance of EGG in patients with unexplained nausea, vomiting and dyspeptic symptoms must be validated by prospective controlled investigations.
ISSN:1350-1925
1365-2982
DOI:10.1046/j.1365-2982.2003.00396.x