椎动脉扭曲及走行变异的血流动力学改变
Journal of Bengbu Medical College(2017)
Abstract
目的:探讨椎动脉走行变异、扭曲的血流动力学改变及超声在其中的诊断价值.方法:回顾性分析27例椎动脉走行变异或椎动脉扭曲病人的超声图像特点,测定收缩期峰值流速(PSV)、阻力指数(RI),记录数据并进行分组比较,分析血流动力学改变规律.结果:27例病人中,16例椎动脉扭曲及11例椎动脉走行变异分别具有较为典型的超声表现,椎动脉扭曲组PSV显著高于对照组及对侧正常组(P<0.01),椎动脉走行变异组PSV显著高于对照组(P<0.01);椎动脉扭曲组、对侧正常组及椎动脉走行变异组RI均显著高于对照组(P<0.05).结论:椎动脉走行变异及椎动脉扭曲具有特征性声像图表现,超声诊断准确率高,并且能反映其血流动力学改变,可以此来预测血管管壁形成斑块的风险.
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Key words
line variation vertebral artery,tortuosity vertebral artery,hemodynamics,peak systolic velocity,resistance index
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