Associations of newborn brain magnetic resonance imaging with long-term neurodevelopmental impairments in very preterm children Academic Article uri icon

abstract

  • OBJECTIVE:To determine the relationship between brain abnormalities on newborn magnetic resonance imaging (MRI) and neurodevelopmental impairment at 7 years of age in very preterm children. STUDY DESIGN:A total of 223 very preterm infants (<30 weeks of gestation or <1250 g) born at Melbourne's Royal Women's Hospital had a brain MRI scan at term equivalent age. Scans were scored using a standardized system that assessed structural abnormality of cerebral white matter, cortical gray matter, deep gray matter, and cerebellum. Children were assessed at 7 years on measures of general intelligence, motor functioning, academic achievement, and behavior. RESULTS:One hundred eighty-six very preterm children (83%) had both an MRI at term equivalent age and a 7-year follow-up assessment. Higher global brain, cerebral white matter, and deep gray matter abnormality scores were related to poorer intelligence quotient (IQ) (Ps < .01), spelling (Ps < .05), math computation (Ps < .01), and motor function (Ps < .001). Higher cerebellum abnormality scores were related to poorer IQ (P = .001), math computation (P = .018), and motor outcomes (P = .001). Perinatal, neonatal, and social confounders had little effect on the relationships between the MRI abnormality scores and outcomes. Moderate-severe global abnormality on newborn MRI was associated with a reduction in IQ (-6.9 points), math computation (-7.1 points), and motor (-1.9 points) scores independent of the other potential confounders. CONCLUSIONS:Structured evaluation of brain MRI at term equivalent is predictive of outcome at 7 years of age, independent of clinical and social factors.

authors

  • Anderson, PJ
  • Treyvaud, Karli
  • Neil, JJ
  • Cheong, JLY
  • Hunt, RW
  • Thompson, DK
  • Lee, KJ
  • Doyle, LW
  • Inder, TE

publication date

  • 2017