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用经颅多普勒超声(TCD)和脑干诱发电位(BAEP)检查50例临床诊断为椎、基底动脉供血不足(VBI)的患者。TCD检测VBI患者椎、基底动脉多普勒血流速度明显低于正常。50例中检出基底动脉(BA)血流异常47例(占94%),左侧椎基底动脉(VAL)血流异常37例(占74%),右侧椎动脉(VAR)血流异常42例(占84%)。BAEP检出异常38例(占76%)。TCD为VBI提供血流动力学资料,BAEP则提供脑干电生理改变的信息,两者都有较高的敏感性,对VBI的诊断均具有应用价值。
Fifty patients clinically diagnosed as vertebrobasilar insufficiency (VBI) were examined by transcranial Doppler (TCD) and brainstem evoked potential (BAEP). TCD detected vertebral VBI patients, basilar artery Doppler blood flow was significantly lower than normal. In 50 cases, 47 cases (94%) had abnormal blood flow of basilar artery (BA), 37 cases (74%) had abnormal blood flow of left vertebrobasilar artery (VAL), abnormal blood flow of right vertebral artery 42 cases (84%). BAEP detected abnormalities in 38 cases (76%). TCD provides hemodynamic data for VBI, and BAEP provides information for electrophysiological changes in the brainstem, both of which have high sensitivity and are valuable for the diagnosis of VBI.