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Developmental maturation of gastro-oesophageal reflux in preterm infants

H E Jeffery1, M Page

  • 1Department of Perinatal and Fetal Medicine, King George V Hospital for Mothers and Babies, Camperdown, NSW, Australia.

Acta Paediatrica (Oslo, Norway : 1992)
|March 1, 1995
PubMed

Insights

Preterm infants experience less frequent and shorter gastro-oesophageal reflux episodes compared to healthy term infants, particularly during wakefulness and active sleep. This reduction in reflux is not explained by factors like sleep state or postnatal age.

Area of Science:

  • Neonatal physiology
  • Gastroenterology
  • Pediatric sleep studies

Background:

  • Gastro-oesophageal reflux (GOR) is common in infants.
  • Understanding GOR in preterm infants is crucial for their development.
  • Previous studies have focused on term infants.

Purpose of the Study:

  • To compare the frequency and duration of GOR in preterm infants with healthy term infants.
  • To investigate factors influencing GOR in these populations.

Main Methods:

  • Multi-channel pen recordings were used to monitor sleep state, movement, breathing, and acid reflux.
  • 40 preterm infants (24-32 weeks gestation) and 74 term infants were studied at term post-menstrual age.
  • Infants had normal head ultrasounds.

Main Results:

  • Both term and preterm infants showed the most frequent and longest reflux episodes during active sleep.
  • Reflux episodes were rare during quiet sleep.
  • Preterm infants had significantly fewer and shorter reflux episodes than term infants during wakefulness and active sleep (p < 0.05).
  • Factors like sleep state, movement, gestational age, postnatal age, intubation, oxygen use, and reflux pH did not explain these differences.

Conclusions:

  • Preterm infants exhibit a lower frequency and duration of gastro-oesophageal reflux compared to term infants.
  • The observed reduction in reflux in preterm infants is not attributable to common physiological or clinical factors.
  • Further research is needed to elucidate the mechanisms behind reduced GOR in preterm infants.

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