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Early sodium intake and later blood pressure in preterm infants

A Lucas1, R Morley, G J Hudson

  • 1MRC Dunn Nutrition Unit, Cambridge.

Archives of Disease in Childhood
|June 1, 1988
PubMed

Insights

Early high sodium intake in preterm infants did not affect blood pressure later in life. This study on infant nutrition found no link between neonatal sodium levels and hypertension at 18 months corrected age.

Area of Science:

  • Pediatrics
  • Neonatology
  • Cardiovascular Health

Background:

  • The relationship between early life salt (sodium) intake and the development of hypertension later in life is a significant public health concern.
  • Preterm infants may be particularly vulnerable to the long-term effects of early nutritional interventions, including sodium content.

Purpose of the Study:

  • To investigate whether early high sodium intake during the neonatal period influences arterial blood pressure at 18 months corrected age in preterm infants.

Main Methods:

  • A randomized controlled trial involving 347 preterm infants was conducted as part of a larger feeding study.
  • Infants were assigned to receive early diets with significantly different sodium content.
  • Arterial blood pressure was measured at 18 months corrected age.

Main Results:

  • Feeding preterm infants a high-sodium preterm formula during the neonatal period did not result in higher arterial blood pressure at 18 months corrected age.
  • No statistically significant difference in blood pressure was observed between groups receiving different sodium content diets.

Conclusions:

  • Early high sodium intake in the neonatal period does not appear to predispose preterm infants to hypertension at 18 months corrected age.
  • These findings suggest that current neonatal high-sodium feeding practices may not negatively impact long-term blood pressure in this vulnerable population.

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