Body measurements, neurological and behavioural development in six-year-old children born preterm and/or...

Area of Science:

• Neonatal research
• Developmental pediatrics
• Pediatric neurology

Background:

• Low birth weight (LBW) infants encompass various categories, including full-term small-for-gestational-age (FT-SGA), preterm appropriate-for-gestational-age (PT-AGA), and preterm small-for-gestational-age (PT-SGA).
• Understanding the relationship between physical growth parameters and neurodevelopmental outcomes in LBW infants is crucial for early intervention and improved long-term health.
• Minor neurological dysfunction (MND) can impact behavior and school achievement, necessitating investigation into its developmental origins.

Purpose of the Study:

• To investigate the association between physical growth parameters (body weight, length, head circumference) and the presence of minor neurological dysfunction (MND) in different subgroups of low birth weight infants.
• To explore the relationship between intrauterine growth retardation and neurodevelopmental outcomes.
• To differentiate the etiological factors and clinical significance of small head size in appropriate-for-gestational-age (AGA) versus small-for-gestational-age (SGA) infants.

Main Methods:

• A comparative study involving three groups of low birth weight infants (FT-SGA, PT-AGA, PT-SGA) and a reference group of full-term appropriate-for-gestational-age (FT-AGA) infants.
• Exclusion of non-Caucasian and handicapped children to ensure a focused analysis.
• Assessment of physical growth parameters (weight, length, head circumference) and collection of data on behavior and school achievement to evaluate for minor neurological dysfunction (MND).

Main Results:

• Physical growth parameters were significantly reduced in all three LBW groups compared to the FT-AGA reference group.
• Body measurements in both preterm and full-term infants correlated with weight at term age, but not gestational age at birth for preterm infants.
• Minor neurological dysfunction (MND) was not found to be related to overall body weight or length. However, a skull circumference below the third centile in FT-SGA infants was associated with the presence of MND.
• No significant relationships were observed between body measurements, behavior at home/school, and school achievement.

Conclusions:

• Severe intrauterine growth retardation is significant for developmental disorders, suggesting a distinct etiology and clinical relevance.
• The findings indicate that a small head circumference, particularly in full-term small-for-gestational-age infants, may be a specific indicator for minor neurological dysfunction (MND).
• Further research is warranted to elucidate the different etiologies and clinical implications of reduced head size in AGA and SGA infants.