Deep Medullary Vein White Matter Injury Global Severity Score Predicts Neurodevelopmental Impairment

Aim:To examine associations between the deep medullary vein white matter injury global severity scoring system and neurodevelopmental impairment.Methods:This is a prospective observational cohort study of infants born at >= 32 weeks, diagnosed with deep medullary vein thrombosis and infarction on neuroimaging in the first month of life. Developmental testing was performed using validated measures for early, preschool, and school-age follow-up.Results:Nineteen (37%) patients had major neurodevelopmental impairment. Global severity score was higher among patients with neurodevelopmental impairment (21.6 vs 13.4, P = .04). Overall, 78% of patients with epilepsy had neurodevelopmental impairment. A greater degree of asymmetry with right-sided injury predominance was associated with lower Bayley-III cognitive scores and presence of neurodevelopmental impairment (P < .01).Conclusions:Results suggest a need for targeted clinical surveillance for patients with a high global severity score and/or asymmetric, predominantly right cerebral white matter injury and for those who develop epilepsy.