后循环系统TIA的TCD特征

The Clinical Feature of Vertebrobasilar Transient Ischemic Attack

目的:了解椎-基底动脉系统短暂性脑缺血(TIA)的TCD表现。方法:用TCD检测76例TIA患者椎-基底动脉和颈内动脉系统各分支血管的平均血流速度(Vm)及脉动指数(PI)等有关血流动力学的数值。结果:76例中有69例(90.79%)TCD异常,主要为椎-基底动脉分支血流动力学异常;1个月TIA发作较频繁(≥3)的患者TCD的异常率明显高于发作较少(<3)的患者。结论:椎-基底动脉系统TIA的TCD检测结果与临床判断的符合率较高,TCD检查结果可作为评价椎-基底动脉系统分支血管的血流动力学情况的一项客观指标。

Objective： To study the clinical features of vertebrobasilar system transient ischemic attack （ TIA ）. Method ： The hemodynamics index , such as pulse index, the blood velocity of flow in side bramches and vertebrobisilar were detected on 76 cases with TIA. Result： 69 cases in 76 were abnormity in hemodynamics vertebrobasilar branches by TCD. In last month, The frequency of TIA was more than three times with higher abnormity of TCD result. Conclusion： It＇s Coincident in TCD detection in vertebrobasilar transient ischemic attack, comparing with the clinical diagnosing. It＇s the main index to evaluate the hemodynamics of side branches of vertebrobasilar.