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Neither motor responses nor gastric emptying vary in response to formula temperature in preterm infants
1Department of Pediatrics, Baylor College of Medicine, Houston, Tex. 77030, USA.
Insights
Formula temperature has minimal impact on gastrointestinal responses in preterm infants. Studies show no significant differences in gastric emptying or motor responses across various temperatures, suggesting limited physiological value of warming formula.
Area of Science:
- Neonatal Physiology
- Gastrointestinal Motility
- Infant Nutrition
Background:
- Preterm infants often receive formula feedings.
- The temperature of formula may influence gastrointestinal function.
- Understanding these responses is crucial for optimizing infant feeding.
Purpose of the Study:
- To evaluate the gastrointestinal responses of preterm infants to different formula temperatures.
- To determine if formula temperature affects gastric motor activity and emptying.
- To assess the physiological significance of feeding warmed formula to preterm infants.
Main Methods:
- Healthy preterm infants were fed a standardized formula.
- Formula was administered at three distinct temperatures: 6°C, 24°C, and 37°C.
- Antral and duodenal motor responses, along with gastric emptying, were monitored.
Main Results:
- No significant differences were observed in antral or duodenal motor responses across the tested temperatures.
- Gastric emptying rates were similar, with approximately one-third of the feeding volume emptied by 20 minutes post-feeding.
- Residual gastric volume at 2 hours postprandially showed no significant variation among the temperature groups.
Conclusions:
- Functional thermoreceptors appear to be underdeveloped in preterm infants.
- The practice of feeding warmed formula to preterm infants may offer limited physiological benefits.
- Further research could explore alternative factors influencing gastrointestinal function in this population.
Abstract:
The purpose of this study was to assess gastrointestinal responses to formula temperature in preterm infants. Healthy preterm infants were fed 4,250 KJ/l formula at 6, 24, and 37 degrees C. There was no significant difference in the magnitude of antral or duodenal motor responses among the three temperatures. All infants emptied approximately one third of the bolus feeding by 20 min, but there was no difference among the temperatures. Approximately 10-20% of a bolus feeding remained in the stomach 2 h postprandially, but there was no difference among the temperatures. Thermoreceptors do not appear to be functionally present in the preterm infant, suggesting that the benefit of feeding warmed formula to the preterm infant my have a limited physiological value.