Growth and development in preterm infants small for gestational age

Area of Science:

• Neonatalogy and Developmental Pediatrics
• Perinatal Health and Growth Monitoring

Background:

• Preterm infants small for gestational age (SGA) and appropriate for gestational age (AGA) present distinct growth and developmental trajectories.
• Understanding long-term outcomes is crucial for optimizing care for these vulnerable populations.

Purpose of the Study:

• To prospectively compare the growth patterns, neurologic, and developmental performance of preterm SGA and AGA infants up to 5 years of age.
• To identify factors influencing developmental outcomes in preterm infants.

Main Methods:

• A prospective study of 21 preterm SGA and 20 preterm AGA infants (birth weight < 1500 gm), excluding those with anomalies.
• Follow-up evaluations of growth, neurologic status, and developmental performance were conducted until 5 years of age.
• Linear regression analysis was used to assess the relationship between socioeconomic status and developmental outcome.

Main Results:

• While SGA infants' weights and lengths were comparable to AGA infants at 1 year, AGA infants were significantly heavier and taller from 2 to 5 years.
• Major neurologic abnormalities were comparable (15% SGA vs. 12% AGA), but minor abnormalities were more frequent in SGA infants (26% vs. 12%).
• SGA infants scored lower in development at 9 months to 3 years, but this difference disappeared by 4 to 5 years; socioeconomic status positively correlated with development.

Conclusions:

• Preterm SGA infants demonstrate catch-up growth and developmental performance comparable to AGA peers by 5 years of age.
• Minor neurologic abnormalities are more common in SGA infants, warranting continued monitoring.
• Long-term follow-up is essential for assessing the full developmental trajectory and outcomes of preterm infants.