Severely growth-restricted fetuses with an estimated fetal weight below the 5th percentile at 18 to 24 weeks are born smaller and have worse antepartum and neonatal outcomes than those with an estimated fetal weight in the 5th to 10th percentiles. These findings suggest that severely growth-restricted fetuses at midgestation should be treated and counseled differently than those in the 5th to 10th percentiles.
Objective
Low birth weight (LBW; below 2500 grams) is a general risk factor for
a variety of neurodevelopmental difficulties. However, these children may
remain more vulnerable to neurologic and environmental insults occurring
years later. This prospective case series reports on children who sustained
a mild, moderate, or severe traumatic brain injury (TBI) in middle childhood
but who had also been born with birth weights below 2500 grams.
Participants
Participants were 14 children with mild, moderate, or severe
traumatic brain injury (TBI), 5 of whom had birth weights under 2500g (LBW)
and nine children with normal birth weight (NBW). All participants were
drawn from a larger study on the long-term cognitive and behavioral impact
of pediatric TBI and were matched on age, estimated socioeconomic status
(SES), and severity of TBI (with NBW children actually having a slightly
worse overall injury severity).
Results
At baseline, both groups exhibited similar scores on WJ-R Letter Word
Identification and Calculations, Tower of London number solved, and CVLT-C
total correct. Baseline group differences were observed on the CELF-III
Formulated Sentences (NBW>LBW) and on the VABS Adaptive Behavior
Composite and Socialization subdomain (LBW>NBW). Over two-years,
relative to the NBW group, the LBW group evidenced declines on both WJ-R
subtests, CVLT-C total correct, CELF-III Formulated Sentences and VABS
Adaptive Behavior Composite and Socialization.
Conclusions
Although preliminary in nature due to small sample size, findings
suggest a history of LBW influences the recovery trajectory following
childhood TBI. Academic and adaptive functioning and verbal memory appeared
particularly affected.
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