期刊
EUROPEAN NEUROLOGY
卷 55, 期 4, 页码 193-197出版社
KARGER
DOI: 10.1159/000093868
关键词
vertebral artery, flow volume; vertebrobasilar ischemia
Background and Purpose: Congenital vertebral artery (VA) hypoplasia is an uncommon embryonic variation of posterior circulation. The frequency of this congenital variation was reported to be 2-6% from autopsy and angiograms. The aim of our study was to elucidate the role of VA hypoplasia in acute ischemic stroke. Method: We examined 191 acute ischemic stroke patients (age 55.8 +/- 14.0 years). TOAST subtypes were determined. A cervical magnetic resonance angiogram was performed in every patient. A duplex study of bilateral VA with flow velocities and vessel diameter recording in the intertransverse (V2) segment was performed within 72 h after onset of ischemic stroke. The net VA flow volume was measured in each subject. Result:The overall incidence of a unilateral congenital hypoplastic VA was 11.51%, which was statistically higher especially in cases of brainstem/cerebellar infarction. Of these, subjects with VA hypoplasia had an etiological preponderance of the 'large-artery atherosclerosis' subtype and a topographic preponderance of ipsilateral posterior circulation infarction. Conclusions: Based on our results, VA hypoplasia seemed a contributing factor of acute ischemic stroke, especially in posterior circulation territories. Copyright (c) 2006 S. Karger AG, Basel.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据