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Type: Journal article
Title: Relationship between surface electrogastrography and antropyloric pressures
Author: Sun, W.
Smout, A.
Malbert, C.
Edelbroek, M.
Jones, K.
Dent, J.
Horowitz, M.
Citation: American Journal of Physiology. Gastrointestinal and Liver Physiology, 1995; 268(3):G424-G430
Publisher: American Physiological Society
Issue Date: 1995
ISSN: 0002-9513
Statement of
W. M. Sun, A. Smout, C. Malbert, M. A. Edelbroek, K. Jones, J. Dent, and M. Horowitz
Abstract: The cutaneous electrogastrogram (EGG) and intraluminal antropyloroduodenal pressures were recorded in 12 healthy volunteers for 30-min periods during phase II of the interdigestive motor complex, during intraduodenal infusion of 10% triglyceride, and after intravenous erythromycin (3 mg/kg). During phase II, the frequency of the EGG was relatively constant in each individual, with a median frequency of 0.046 Hz [2.8 counts per minute (cpm)]. EGG frequency was greater (P < 0.05) than the median rate of antral pressure waves (1.8 cpm). The suppression of antral pressure waves (P < 0.05) and stimulation of isolated pyloric pressure waves (IPPWs) (P < 0.05) produced by triglyceride infusion were not associated with changes in EGG frequency compared with phase II. The frequency of the EGG and the rate of IPPWs were comparable. After erythromycin, EGG frequency was 0.03 Hz (1.8 cpm), less than during both phase II and triglyceride infusion (P < 0.05) and almost identical to the rate of antral pressure waves. Pressure waves were nearly always associated with an EGG signal. In contrast, the temporal relationship between the EGG signal and pressure waves was variable. During triglyceride infusion (r = 0.83, P < 0.001) and after erythromycin (r = 0.83, P < 0.001) there was a close (approximately 1:1) relationship between the rate of pressure waves and EGG frequency. However, there was no significant relationship (r = 0.32, not significant) between the number of pressure waves and EGG frequency frequency during pase II.
Keywords: Pyloric Antrum; Pylorus; Humans; Erythromycin; Triglycerides; Electrodiagnosis; Infusions, Intravenous; Manometry; Electrodes; Pressure; Adolescent; Adult; Female; Male
Rights: Copyright © 1995 the American Physiological Society
RMID: 0030005138
DOI: 10.1152/ajpgi.1995.268.3.g424
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Appears in Collections:Medicine publications

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