摘要目的 探讨椎动脉迂曲对脑血流动力学的影响.方法 对223例椎-基底动脉短暂性脑缺血发作(TIA)患者行脑血管造影术,筛选出椎动脉迂曲患者,经颅彩色多普勒的方法对椎动脉血流动力学改变进行评价.结果 223例椎-基底动脉TIA患者中84名患者椎动脉迂曲;与无椎动脉迂曲组相比,椎动脉迂曲患者年龄更大,具有血管危险因素的比例更高;椎动脉迂曲患者,尤其在中重度椎动脉迂曲患者收缩期血流速度、平均血流速度低于对照组,而血管搏动指数及阻力指数均高于对照组.结论 椎动脉迂曲是椎-基底动脉TIA常见血管异常,并导致血流动力学改变,高龄和血管危险因素可能是导致椎动脉迂曲的因素.

abstractsObjective To evaluate the effect of vertebral artery kinking on cerebral hemodynamics. Methods The patients with vertebral artery kinking on digital subtraction angiograph (DSA) were selected from 223 patients with vertebral-basilar artery transient ischemic attack, then the changes of vertebral artery hemodynamics were evaluated using transcranial color Doppler (TCD). Results There were 84 patients with vertebral artery kinking among 223 patients with vertebral-basilar artery transient ischemic attack. Patients with vertebral artery kinking were older and had more vascular risk factors than patients without vertebral artery kinking. Compared with the control group, patients showed decreased blood flow rate such as peak velocity (Vp) and mean velocity (Vm), increased pulsatility index (PI) and resistant index (RI) in vertebral artery kinking group. Conclusions Vertebral artery kinking is common abnormal artery among patients with vertebral-basilar artery transient ischemic attack, it leads to hemodynamic changes. Age and vascular risk factors are potential causes of vertebral artery kinking.