Harasymiw L; Kuang A; Xu D; Scheffler A; George E; Peyvandi S; McQuillen P · 2026 · medRxiv : the preprint server for health sciences
Paper
BACKGROUND: Infants with critical congenital heart disease (CHD) are at high risk for abnormal brain development and later neurodevelopmental impairment. We hypothesized that the trajectory of perioperative whole-brain network development would predict neurodevelopmental outcomes in early childhood. METHODS: This prospective longitudinal cohort of neonates with critical CHD (n = 97) underwent preoperative and/or postoperative brain MRI with diffusion imaging. Whole-brain network measures were derived from structural connectomes. Neurodevelopment was assessed between 1 and 4 years using the Bayley Scales of Infant and Toddler Development. RESULTS: White matter injury was associated with slower perioperative growth in global efficiency ( p = 0.013), a measure of network integration, whereas cardiac physiology was not associated with network development. Infants with greater perioperative increases in global efficiency had higher cognitive ( p = 0.001), language ( p < 0.001), and motor ( p = 0.008) scores. For each 1-standard deviation increase in the trajectory of global efficiency, cognitive scores increased by 8.2 points (95% CI, 3.64-12.78), independent of brain injury and socioeconomic factors. CONCLUSION: In infants with critical CHD, longitudinal whole-brain network development was associated with neurodevelopment across multiple domains. Early network development may represent a candidate biomarker of neurodevelopmental risk and resilience in this population.
Analysis
This study investigates how the development of whole-brain networks in neonates with critical congenital heart disease (CHD) predicts their neurodevelopmental outcomes.
Discovery
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