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Influence of gestational age on nosologic CP characteristics in a high-risk population

Eveline Himpens1, Ann Oostra, Inge Franki

  • 1Rehabilitation Sciences and Physiotherapy Ghent, University College Arteveldehogeschool-Ghent University, Campus Heymans 2B3, De Pintelaan 185, 9000 Ghent, Belgium. eveline.himpens@ugent.be

European Journal of Pediatrics
|July 18, 2009
PubMed

Insights

Gestational age significantly influences cerebral palsy (CP) types in high-risk infants. Spastic CP is more common in preterm infants, while dyskinetic CP increases with gestational age, suggesting maturity-related brain injury patterns.

Area of Science:

  • Neonatal neurology
  • Developmental pediatrics
  • Pediatric neurology

Background:

  • Cerebral palsy (CP) is a common neurodevelopmental disorder.
  • Gestational age (GA) is a known risk factor for CP.
  • Understanding the relationship between GA and CP characteristics is crucial for early intervention.

Purpose of the Study:

  • To investigate the interrelationship between gestational age (GA) and the nosologic characteristics (type, distribution, severity) of cerebral palsy (CP).
  • To analyze CP subtypes in high-risk infants based on GA.
  • To explore the association between GA and CP patterns in neonatal intensive care unit (NICU) survivors.

Main Methods:

  • Prospective cohort study of 1099 high-risk infants admitted to the NICU.
  • Infants assessed up to corrected age of 2 years or more for CP diagnosis.
  • Analysis of CP types (spastic, dyskinetic, ataxic), distribution (unilateral, bilateral), and severity in relation to GA (extremely preterm, very preterm, moderately preterm, term).

Main Results:

  • CP was diagnosed in 177 (16%) infants.
  • Spastic CP was more prevalent in preterm infants (72-90%) compared to term infants (42%).
  • Dyskinetic CP was more common in term infants (47%) than preterm infants (7-22%).
  • Bilateral spastic CP decreased with advancing GA, while unilateral spastic CP increased.
  • CP severity was associated with birth period, favoring milder forms in later periods.

Conclusions:

  • In high-risk neonates, dyskinetic CP increases with advancing GA, whereas spastic CP decreases.
  • The distribution of CP involvement (bilateral vs. unilateral) changes gradually and oppositely with GA.
  • These GA-related associations suggest the influence of gestational age-specific brain injuries on CP development.

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