Reversed Robin Hood Syndrome in the Light of Nonlinear Model of Cerebral Circulation
Adam Piechna , Krzysztof Maria Cieślicki
AbstractThe brain is supplied by the internal carotid and vertebro - basilar systems of vessels interconnected by arterial anastomoses and forming at the base of the brain a structure called the Circle of Willis (CoW). An active intrinsic ability of cerebral vascular bed maintains constant Cerebral Blood Flow (CBF) in a certain range of systemic pressure changes. This ability is called autoregu lation and together with the redundant structure of the CoW guarantee maintaining CBF even in part ial occlusion of supplying arteries. However, there are some situations when combination of those two mechanisms cause an opposite effect , called the Reversed Robin Hood Syndrome (RRHS). In this work we proposed a model of the CoW with autoregulation mecha nism and investigated a RRHS , which may occur in case of Internal Carotid Artery (ICA) stenosis combined with hypercapnia. We showed and analyzed mechanism of stealing the blood b y the contralateral side of the brain. Our results were qualitatively compare d with the clinical reports available in the literature
|Publication size in sheets||0.5|
|Book||Materiały XIV Konf. Techniki Komputerowe w Inżynierii 2016, 2016, Redakcja Wydawnictw WAT|
|Keywords in English||Cerebral blood flow, autoregulation, steal syndrome, Circle of Willis, Computational Fluid Dynamic|
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