Spontaneous occlusion of the circle of Willis in children: pediatric moyamoya summary with proposed evidence-based practice guidelines. A review

Journal of Neurosurgery. Pediatrics
Edward R Smith, R Michael Scott

Abstract

Moyamoya is a progressive arteriopathy of unknown origin affecting the branches of the internal carotid artery (ICA). The arteriopathy can present as an isolated medical condition, affecting both sides of the brain ("moyamoya disease") or can be unilateral or found in association with systemic disorders ("moyamoya syndrome"). The ischemia resulting from luminal narrowing predisposes children to transient ischemic attacks and stroke-the primary presentations of affected patients. Although it is rare-affecting 1 in 1 million children in the US-moyamoya is implicated in 6% of all childhood strokes. Diagnosis is defined by characteristic findings on arteriograms, including stenosis of the branches of the ICA and a pathognomonic spray of small collateral vessels in this region, descriptively likened to a "puff of smoke" ("moyamoya" in Japanese). Treatment is predicated on restoration of cerebral blood flow by surgical revascularization. The rarity of this disorder has limited research and the development of evidence-based clinical management. While acknowledging these limitations, in this article the authors aim to summarize current studies of pediatric moyamoya, with the objective of providing a framework for construction of eviden...Continue Reading

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BETA
environmental
sedation

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