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Development of gastric slow waves in preterm infants measured by electrogastrography
1Lynn Institute for Healthcare Research, Integris Baptist Medical Center, Oklahoma City, Oklahoma 73112, USA.
Insights
Gastric myoelectrical activity (GMA) in preterm infants shows a developmental progression during the first six months of life. This process, measured by electrogastrography, appears to be stimulated by enteral feeding.
Area of Science:
- Pediatrics
- Gastroenterology
- Physiology
Background:
- Gastric myoelectrical activity (GMA) is crucial for gastrointestinal function.
- Understanding GMA development in preterm infants is essential for optimizing their care.
Purpose of the Study:
- To investigate the developmental trajectory of GMA in healthy preterm infants.
- To analyze changes in GMA parameters over the first six months of life.
Main Methods:
- Surface electrogastrography (EGG) was used to record GMA in 19 preterm infants.
- Six follow-up recordings were performed per subject.
- Spectral analysis was applied to EGG parameters.
Main Results:
- The percentage of normal slow waves increased progressively with age (from 36.7% at 1 week to 65.8% at 6 months).
- A significant postprandial increase in normal slow waves was observed within the first two months.
- Gestation age did not significantly impact the percentage of normal slow waves.
Conclusions:
- Preterm infants exhibit low percentages of normal slow waves at birth, indicating immature GMA.
- GMA demonstrates a clear developmental process during early infancy.
- Enteral feeding may play a role in stimulating GMA development in preterm infants.
Abstract:
The aim of this study was to investigate the developmental process of gastric myoelectrical activity (GMA) in preterm infants. Nineteen healthy preterm infants were studied. GMA was recorded using surface electrogastrography, and six follow-up studies were performed in each subject. Spectral analysis methods were applied to compute the parameters of the electrogastrogram (EGG). The results showed that there was a developmental process of GMA with age during the first 6 mo of life. 1) The percentage of normal slow waves showed a progressive increase after birth (36.7 +/- 6.1, 37.8 +/- 6.2, 47.0 +/- 10.0, 52.2 +/- 12.2, 55.2 +/- 9.7, and 65.8 +/- 13.5% at 1 and 2 wk and 1, 2, 4, and 6 mo, respectively); 2) there was a significant postprandial increase in the percentage of normal slow waves during the first 2 mo after birth; and 3) the percentages of normal slow waves for different gestation ages were not statistically significant. In conclusion, the percentage of normal slow waves is low at birth and there is a developmental process that may be stimulated by enteral feeding.