周冀英 刘雁 谢文卫 董为伟 重庆医科大学附一院神经内科 400016 中国神经精神疾病杂志 2000 0 26 5


    关键词：经颅多普勒；椎-基底动脉 期刊 zgsjjsjbzz 0 294-295 论著与学术交流 fur -->


    

【摘要】 目的 采用TCD观测转颈对正常人及眩晕患者基底动脉流速的影响。方法 正常对照组36例，眩晕患者31例，TCD常规检查椎-基底动脉及转颈时基底动脉流速的变化。结果 正常人随年龄增大，椎-基底动脉流速下降，转颈前后基底动脉流速差异无显著性；眩晕患者椎-基底动脉流速下降，转颈后基底动脉流速明显下降，较转颈前差异有显著性(P<0.05)。结论 转颈后基底动脉流速下降≥20%，即为转颈试验阳性，提示患者椎—基底动脉系统代偿能力差，存在椎动脉狭窄等病变的可能，需进一步检查。

Basilarartery blood flow velocity during head rotation in patients with vertigo

Zhou Jiying Liu Yan Xie Wenwei Dong Weiwei

    (Department of Neurology, First Affiliated Hospitalof Chongqing University of Medical Sciences, 1 Youyi Road, Chongqing. 400016. Tel:023-69012717)

【Abstract】Objective To examine basilarartery (BA) blood velocity during head rotation with transcranial Doppler (TCD) inpatients with vertigo and in control subjects. Methods Uing TCD, 31 vertigo patients and 36 control subjects were examinedduring head rotation. Results No significantdifference in BA blood flow velocity was found between the neutral and rotated position inthe control group. The vertebrobasilar artery blood flow velocities were reduced in thevertigo patients when compared with the controls. BA blood flow velocity was reducedscgnificantly in rotated position then in neutral position (P<0.05). Conclusions Blood flowreduction in the BA of more than 20% was considered to be considered significantlyabnormal, and the reduction dependents on the condition of vertebral arteries. Our datasuggest that further angiographic investigation should be undertaken to determine thepresence of VA lesions.

     ......