Children born extremely preterm show significant lower cognitive, language and motor function levels compared with

J Månsson1, K Stjernqvist

  • 1Department of Psychology, Lund University, Lund, Sweden.

Insights

Children born extremely preterm show significant developmental delays in cognitive, communication, and motor functions by 2.5 years compared to term-born peers. The Bayley Scales of Infant and Toddler Development (Bayley-III) provide detailed insights into these outcomes.

Area of Science:

  • Neonatal development
  • Pediatric neurodevelopment
  • Developmental pediatrics

Background:

  • Extreme prematurity (born before 27 weeks gestation) poses significant risks for long-term neurodevelopmental outcomes.
  • Population-based studies are crucial for understanding the prevalence and spectrum of developmental challenges in extremely preterm infants.

Purpose of the Study:

  • To evaluate the developmental status of extremely preterm children at 2.5 years of age.
  • To compare developmental outcomes between extremely preterm infants and a term-born control group.
  • To identify specific domains of delay in extremely preterm children.

Main Methods:

  • Utilized the population-based Extremely Preterm Infants in Sweden Study (EXPRESS).
  • Assessed 399 extremely preterm children and 366 term-born controls using the Bayley Scales of Infant and Toddler Development, third edition (Bayley-III).
  • Evaluated cognitive, communication (receptive and expressive), and motor (fine and gross) functions.

Main Results:

  • Extremely preterm children exhibited significantly lower performance across all Bayley-III assessed domains compared to controls.
  • Prevalence of moderate-to-severe developmental delay was notable: 10.8% cognitive, 14.9% receptive communication, 14.5% expressive communication, 12.4% fine motor, and 7.0% gross motor.
  • Significant intra-index performance variations were observed, indicating nuanced developmental profiles.

Conclusions:

  • Extremely preterm children experience significant deficits in cognitive, communicative, and motor functions at 2.5 years.
  • The Bayley-III is a valuable tool for obtaining detailed developmental information in extremely preterm populations.
  • Early identification and targeted interventions are essential for improving outcomes in this vulnerable group.
Abstract

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