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 3 6例 ,眩晕患者 3 1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 .0 5 )。结论 转颈后基底动脉流速下降≥ 2 0 % ,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 。
Objective To examine basilar artery (BA) blood velocity during head rotation with transcranial Doppler (TCD) in patients with vertigo and in control subjects. Methods Uing TCD, 31 vertigo patients and 36 control subjects were examined during head rotation. Results No significant difference in BA blood flow velocity was found between the neutral and rotated position in the control group. The vertebrobasilar artery blood flow velocities were reduced in the vertigo patients when compared with the controls. BA blood flow velocity was reduced scgnificantly in rotated position then in neutral position ( P <0.05). Conclusions Blood flow reduction in the BA of more than 20% was considered to be considered significantly abnormal, and the reduction dependents on the condition of vertebral arteries. Our data suggest that further angiographic investigation should be undertaken to determine the presence of VA lesions.
出处
《中国神经精神疾病杂志》
CAS
CSCD
北大核心
2000年第5期294-295,共2页
Chinese Journal of Nervous and Mental Diseases
