Electrogastrography in Adults and Children: The Strength, Pitfalls, and Clinical Significance of the Cutaneous Recording of the Gastric Electrical Activity
Table 2
Definitions of spectral EGG frequencies.
Normal
Peaks in frequencies ranging from 2.0 to 4.0 cpm
Normal with harmonics
Peaks in frequencies ranging from 2.0 to 4.0 cpm with peaks at exact multiples of the fundamental frequency
Bradygastria
Peaks in frequencies ranging from 1.0 to 2.0 cpm in absence of a peak in the normal range
Tachygastria
Peaks in frequencies ranging from 4.0 to 10.0 cpm in absence of a peak in the normal range
Noise/no signal
No clear peaks, or multiple peaks in the spectrum, strong elevation of the baseline, significant noise or artefacts in the row EGG signal