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Am J Physiol Gastrointest Liver Physiol 272: G1022-G1027, 1997;
0193-1857/97 $5.00
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AJP - Gastrointestinal and Liver Physiology, Vol 272, Issue 5 1022-G1027, Copyright © 1997 by American Physiological Society

ARTICLES

Patterns of gastric myoelectrical activity in human subjects of different ages

J. D. Chen, E. Co, J. Liang, J. Pan, J. Sutphen, R. B. Torres-Pinedo and W. C. Orr
Lynn Institute for Healthcare Research, Integris Baptist Medical Center, Oklahoma City, Oklahoma 73112, USA.

The aim of this study was to investigate the developmental change of gastric myoelectrical activity in humans. Five groups of healthy subjects were studied, including 10 preterm newborns, 8 full-term newborns, 8 full-term infants (ages 2-6 mo), 9 children (ages 4-11 yr), and 9 adults. Gastric myoelectrical activity was recorded using surface electrogastrography for 30 min before and 30 min after a test meal in each subject. Spectral analysis methods were applied to compute the parameters of the electrogastrogram (EGG). The results showed that the percentage of 2- to-4-cycles/min (cpm) slow waves was 26.6 +/- 3.9% in the preterm newborns, 30.0 +/- 4.0% in full-term newborns, 70 +/- 6.1% in 2- to 6-mo-old infants (P < 0.001 compared with newborns), 84.6 +/- 3.2% in 4- to 11-yr-old children (P < 0.03 compared with infants), and 88.9 +/- 2.2% in the adults (P > 0.05 compared with children). In conclusion, gastric slow waves are absent at birth, and there is a maturing process after birth. Age-matched controls are necessary for the interpretation of EGG data from neonates and infants, whereas EGG data in children are the same as in adults.


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J. Liang, E. Co, M. Zhang, J. Pineda, and J. D. Z. Chen
Development of gastric slow waves in preterm infants measured by electrogastrography
Am J Physiol Gastrointest Liver Physiol, March 1, 1998; 274(3): G503 - G508.
[Abstract] [Full Text] [PDF]


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