Brain injury and development in newborns with critical congenital heart disease

Anastasia Dimitropoulos, Patrick S. McQuillen, Viyeka Sethi, Alisha Moosa, Vann Chau, Duan Xu, Rollin Brant, Anthony Azakie, Andrew Campbell, A. James Barkovich, Kenneth J. Poskitt, Steven P. Miller

Research output: Contribution to journalArticle

102 Scopus citations

Abstract

Objective: To determine the relationship between radiologically identifiable brain injuries and delayed brain development as reflected by brain metabolic and microstructural integrity. Methods: Term newborns with congenital heart disease (CHD) (120 preoperatively and 104 postoperatively) were studied with MRI to determine brain injury severity (BIS), microstructure reflected by fractional anisotropy (FA) and average diffusivity (Dav), andmetabolism reflected byN-acetylaspartate (NAA)/choline (Cho) and lactate/Cho. Brain development is characterized by increasing NAA/Cho and white matter FA, and by decreasing Dav and lactate/Cho. Results: Newly acquired brain injury was common (41%preoperative, 30%postoperative). Lower white matter FA (p 5 0.005) and lower NAA/Cho (p 5 0.01) were associated with increasing preoperative BIS. Higher neonatal illness severity scores (p 5 0.03), lower preoperative oxygen saturation (p 5 0.002), hypotension (p , 0.001), and septostomy (p 5 0.002) were also predictive of higher preoperative BIS. Preoperative FA, Dav, and NAA/Cho did not predict new postoperative BIS. Increasing preoperative BIS predicted higher postoperative Dav (p 5 0.002) and lactate/Cho (p 5 0.008). Within the postoperative scan, new brain injuries were associated with lower white matter FA (p 5 0.04). Postoperative BIS (new lesions) was associated with lower postoperative systolic (p 5 0.03) and mean (p 5 0.05) blood pressures. Conclusions: Brain injuries in newborns with CHD are strongly related to abnormalities of brain microstructural and metabolic brain development, especially preoperatively. Both newly acquired preoperative and postoperative brain injuries are related to potentially modifiable clinical risk factors.

Original languageEnglish (US)
Pages (from-to)241-248
Number of pages8
JournalNeurology
Volume81
Issue number3
DOIs
StatePublished - Jul 16 2013
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Neurology
  • Arts and Humanities (miscellaneous)

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    Dimitropoulos, A., McQuillen, P. S., Sethi, V., Moosa, A., Chau, V., Xu, D., Brant, R., Azakie, A., Campbell, A., Barkovich, A. J., Poskitt, K. J., & Miller, S. P. (2013). Brain injury and development in newborns with critical congenital heart disease. Neurology, 81(3), 241-248. https://doi.org/10.1212/WNL.0b013e31829bfdcf