Developmental lags in preterm infants from one to three years of age

Area of Science:

• Developmental Psychology
• Pediatric Medicine
• Neuroscience

Background:

• Preterm birth can impact infant development across multiple domains.
• Understanding the trajectory of development in preterm infants is crucial for early intervention.
• Biological maturity, assessed by corrected age, is a key factor in developmental assessments.

Purpose of the Study:

• To assess the developmental trajectories of preterm versus full-term infants.
• To investigate the influence of biological maturity (corrected age) on developmental skills.
• To identify specific areas of delay and long-term outcomes in preterm infants.

Main Methods:

• Longitudinal study tracking 20 preterm and 20 full-term infants.
• Developmental assessments administered across 5 sessions from 13.5 months to 3 years corrected age.
• Evaluated play, sensorimotor, language, and general developmental skills.

Main Results:

• Biological maturity significantly influenced play and sensorimotor skills at 13.5 months, with effects diminishing by 22 months.
• Preterm infants exhibited significant delays in sensorimotor, personal-social, and gross motor skills at 13.5 months.
• Language delays were noted in preterm infants at 22 months, and visual information-processing deficits persisted at 3 years.
• Developmental progress, especially in representational abilities, was more closely linked to corrected age than postnatal age.

Conclusions:

• Corrected age is a more accurate predictor of developmental milestones in preterm infants than postnatal age.
• While many early developmental deficits in preterm infants are overcome, subtle challenges in visual processing may remain.
• Early developmental assessments should consider biological maturity to accurately interpret a preterm infant's progress.