Relationship between Vertebral Artery Hypoplasia and Posterior Circulation Ischemia

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
Hidetaka MitsumuraYasuyuki Iguchi

Abstract

Vertebral artery hypoplasia (VAH) is a common congenital anatomical variation. In previous reports, it was unclear whether VAH was an independent risk factor for posterior circulation ischemia. The purpose of this study was to evaluate the impact of VAH on posterior circulation ischemia. Subjects were patients with acute ischemic stroke who underwent brain magnetic resonance imaging (MRI) and carotid ultrasonography. Diagnostic criteria for VAH were as follows: (1) Vertebral artery (VA) diameter less than 2.5 mm; (2) VA diameter less than 3.0 mm and a difference in length equal to or greater than 1:1.7; (3) VA diameter less than 3.0 mm, peak systolic velocity less than 40 cm/second, and resistance index value greater than .75. The patients were categorized by the location of the ischemic stroke on MRI as follows: lesion in posterior circulation (P group), lesion in anterior circulation (A group), and multiple lesions in both the anterior and posterior circulations (AP group). We evaluated 129 consecutive patients. VAH was seen in 39, and VA occlusion was found in 15. The prevalence of VAH in the P group (44.4%) was significantly higher than that in the A + AP group (24.7%, P = .034). Multivariate regression analysis showed that...Continue Reading

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Citations

Apr 23, 2016·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Tamara SauerAnastasios Chatzikonstantinou
Mar 10, 2017·Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging·Adam Domonkos TarnokiClaudio Baracchini
Aug 18, 2017·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Emma van der WeijdeRobin H Heijmen
Feb 20, 2018·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Aristeidis ZibisApostolos Karantanas
Aug 18, 2018·Journal of Neurology·Caterina KulykClaudio Baracchini
Mar 11, 2021·Surgical and Radiologic Anatomy : SRA·B R OmotosoL Lazarus

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