Neonatal Intensive Care Unit Network Neurobehavioral Scale Profiles in Full-Term Infants: Associations with Maternal...

Area of Science:

• Neonatal development
• Neurobehavioral assessment
• Pediatric neuroimaging

Background:

• Understanding typical neonatal behavior is crucial for identifying potential developmental variations.
• The Neonatal Intensive Care Unit Network Neurobehavioral Scale (NNNS) is a key tool for assessing infant behavior.
• Maternal factors like adversity and medical risk can influence neonatal outcomes.

Purpose of the Study:

• To investigate neurobehavioral profiles in healthy, full-term infants using the NNNS.
• To correlate these profiles with maternal adversity, medical risk, and infant brain volumes.
• To identify distinct infant neurobehavioral patterns and their neonatal characteristics.

Main Methods:

• A prospective, longitudinal cohort study followed pregnant mothers and their infants.
• Infants underwent NNNS assessment and MRI 2-5 weeks post-birth.
• Latent profile analysis categorized infants into neurobehavioral profiles, with subsequent statistical comparisons.

Main Results:

• Three infant neurobehavioral profiles were identified: regulated (46.6%), hypotonic (16.6%), and fussy (36.8%).
• Fussy infants exhibited smaller head circumference, total brain, and white matter volumes compared to hypotonic infants.
• No significant differences were found in prenatal maternal health, social advantage, or psychosocial stress across profiles.

Conclusions:

• Distinct neurobehavioral profiles exist in healthy newborns, with specific brain volume correlations.
• Hypotonic and fussy profiles are linked to neonatal brain characteristics, not prenatal adversity.
• Further research is needed to determine if these early profiles predict later developmental outcomes.