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Updated: May 27, 2026
07:30
Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
Intellectual ability and executive function in pediatric moyamoya vasculopathy
Tricia S Williams1, Robyn Westmacott, Nomazulu Dlamini
1Department of Psychology, The Hospital for Sick Children, University of Toronto, ON, Canada
Developmental Medicine and Child Neurology
|November 29, 2011
Summary
Children with moyamoya vasculopathy experience significant intellectual and executive function deficits. Bilateral disease and stroke history worsen these neurocognitive challenges in pediatric patients.
Area of Science:
- Pediatric Neurology
- Neuroscience
- Cerebrovascular Disease
Background:
- Moyamoya vasculopathy involves progressive stenosis of cerebral arteries, leading to reduced blood flow and stroke risk.
- Understanding the neurocognitive impact in children is crucial for effective management.
Purpose of the Study:
- To assess intellectual and executive functioning in children with moyamoya vasculopathy.
- To determine how moyamoya type, stroke history, laterality, and disease duration affect cognitive abilities.
Main Methods:
- Thirty pediatric patients with moyamoya underwent cognitive assessments (Wechsler Intelligence Scales) before revascularization.
- Parent and teacher ratings (Behavior Rating Index of Executive Function) evaluated executive functions.
Main Results:
- Children with moyamoya showed significantly lower scores in intelligence and executive functioning compared to norms.
- Bilateral moyamoya with stroke history was associated with lower intellectual and verbal comprehension scores.
- Teacher-reported metacognitive executive function deficits were more pronounced in bilateral cases.
Conclusions:
- Moyamoya vasculopathy poses a risk for intellectual and executive dysfunction in children.
- Bilateral disease and a history of stroke exacerbate these neurocognitive impairments.
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