Journal
DEVELOPMENTAL NEUROPSYCHOLOGY
Volume 36, Issue 1, Pages 5-21Publisher
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/87565641.2011.540526
Keywords
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Funding
- Inova Health Systems Faculty
- Maggie Snyder Foundation for the Premature and Pediatric Pulmonary Patient of Falls Church, VA
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Preterm (PT) birth is an established risk factor for high mortality and morbidity rates. Infants and school-aged children have been well-studied, but few have described neuropsychological and behavioral outcomes at preschool age. We compared a 2004-2006 preterm/extremely low birth weight (ELBW) cohort (PT/ELBW; N = 60) born 33 weeks gestation and 1,000 g with term-born participants (N = 90) at age 3. PT/ELBW subgroups (26 weeks; 26-33 weeks) performed more poorly than the term-born group on verbal, nonverbal, fine motor, visual-motor, visual attention, noun fluency, early number concepts, and functional communication measures prior to age correction; PT/ELBW children born 26 weeks additionally performed more poorly on action-verb fluency. Those born 26-33 weeks had executive and adaptive deficits on parental behavioral report. Age correction significantly improved preterm scores without masking relative verbal, nonverbal, motor, and behavioral weaknesses that may require early intervention. In conclusion, subtle delays in emergent neuropsychological and behavioral functions are measurable at age 3, and neurobiological immaturity remains a prepotent influence on outcome in the preschool years. Further study should enhance our understanding of the trajectory of brain development and the limits of neuroplasticity in these highly at-risk children.
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