Association of Vertebral Artery Hypoplasia and Vertebrobasilar Cerebrovascular Accident.

: Vertebral artery hypoplasia (VAH) is a controversial risk factor for cerebral infarction. The aim of this study was to analyze the prevalence of vertebral artery hypoplasia and to evaluate its association with vertebrobasilar cerebrovascular accidents. : The study was conducted in the Neurology Departments of the Republican Vilnius University Hospital from 2015 to 2020.

Association between the posterior part of the circle of Willis and the vertebral artery hypoplasia.

Background: It is not clear whether the configuration of the posterior part of the circle of Willis (CW) depends on the proximal part of the vertebrobasilar system. Our aim is to evaluate the posterior part of CW in association with different size of vertebral arteries (VA) in healthy volunteers.

Materials And Methods: The present study was based on a sample of 923 healthy volunteers who were examined from 2013 through 2018.

Association between vertebral artery hypoplasia and posterior circulation stroke.

Background: The clinical significance of vertebral artery (VA) hypoplasia is under discussion. The aim of this retrospective study is to evaluate a hypothesis of a possible causal link between VA hypoplasia (VAH) and the incidence of posterior circulation stroke (PCS) or TIA depending on the degree of VAH and vascular risk factors.

Methods: A total of 367 symptomatic (PCS or TIA) and 742 asymptomatic subjects, were selected to participate in the study.