Visual function and fine-motor control in small-for-gestational age infants

Area of Science:

• Neonatal development
• Pediatric neurology
• Infant motor development

Background:

• Infants small-for-gestational age (SGA) may experience altered neurodevelopmental trajectories.
• Fine-motor and visual functions are crucial indicators of early infant development.
• Understanding developmental differences in SGA infants is vital for early intervention.

Purpose of the Study:

• To compare visual function and fine-motor control between full-term small-for-gestational age (SGA) and appropriate-for-gestational age (AGA) infants.
• To identify specific developmental milestones affected in SGA infants within the first three months of life.

Main Methods:

• Prospective evaluation of 31-34 full-term infants per month over three months.
• Infants categorized as SGA (birth weight <10th percentile) or AGA (25th-90th percentile).
• Exclusion of infants with genetic syndromes, infections, or multiple congenital malformations.
• Utilized Bayley Scales of Infant Development-II, focusing on visual and fine-motor items.

Main Results:

• The Motor Index Score (IS) was significantly lower in the SGA group during the second month.
• Specific fine-motor behaviors, such as 'attempts to bring hands to mouth' (1st month) and 'reaches for suspended ring' (3rd month), occurred with higher frequency in the SGA group.
• Visual function outcomes were not detailed in the provided results summary.

Conclusions:

• The Motor IS was notably lower in SGA infants by the second month.
• Certain fine-motor control items presented with higher frequency in SGA infants during the first and third months.
• These findings suggest potential differences in the timing and manifestation of fine-motor development in SGA infants.