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Birth Weight, Insulin Resistance, and Blood Pressure in Late Preterm Infants

Hany Aly1, Reem M Soliman2, Mohamed El-Dib1

  • 1Department of Neonatology, The George Washington University and Children's National Medical Center, Washington, District of Columbia.

American Journal of Perinatology
|January 17, 2015
PubMed

Insights

Small for gestational age (SGA) late preterm infants show lower diastolic blood pressure and IGF-1 levels compared to appropriate for gestational age (AGA) infants. Metabolic differences may emerge later in life.

Area of Science:

  • Neonatal Medicine
  • Pediatric Endocrinology
  • Metabolic Health

Background:

  • Late preterm infants are at risk for metabolic complications.
  • Growth restriction (small for gestational age - SGA) may impact neonatal metabolic profiles.
  • Understanding these differences is crucial for early intervention.

Purpose of the Study:

  • To compare insulin sensitivity, lipid profiles, and blood pressure in late preterm infants born appropriate for gestational age (AGA) versus small for gestational age (SGA).

Main Methods:

  • Prospective, observational study of AGA and SGA late preterm infants.
  • Measurements included blood pressure, glucose, insulin, IGF-1, insulin resistance, and lipids.
  • Data collected on day 1 and in the 2nd week of life.

Main Results:

  • No initial differences in blood pressure, insulin resistance, or lipid profiles.
  • SGA infants had significantly lower diastolic blood pressure and IGF-1 in the 2nd week.
  • No association found between insulin resistance and birth weight percentile, age, or caloric intake.

Conclusions:

  • SGA late preterm infants exhibit lower diastolic blood pressure and IGF-1 in early postnatal life compared to AGA infants.
  • Insulin resistance and lipid profiles were similar between groups.
  • Metabolic derangements in SGA infants may manifest later than the immediate postnatal period.
Abstract

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