【摘要】 目的探讨椎动脉多普勒频谱形态改变与锁骨下动脉(Sub-A)近段病变程度之间的关系。方法 119例确诊为Sub-A近段狭窄/闭塞患者,分析其椎动脉频谱形态与Sub-A狭窄程度之间的关系,并进行分组比较;同时观察颈总动脉、颈内动脉、椎动脉及对侧Sub A狭窄情况,分析其对窃血的影响。结果 (1)Sub-A轻度狭窄组的窃血发生比例明显低于中度以上狭窄组(P<0.0.001);Sub-A中度狭窄组的显性窃血比例明显低于重度以上狭窄组(P<0.001)。(2)单纯一侧Sub-A狭窄患者的窃血发生比例明显高于合并颈总动脉、颈内动脉、椎动脉和对侧Sub-A狭窄者(P<0.05)。结论 Sub-A近端狭窄是决定椎动脉窃血频谱的主要因素,头颈部其他动脉病变对该频谱也有影响。更多还原

【Abstract】 Objective To study the correlation of Vertebral artery waveform alteration and the degree of subclavian artery(Sub-A) stenosis.Methods 119 patients with Sub-A proximal stenosis/occlusion were reviewed,the relationship of VA steal waveform and Sub-A stenosis was analyzed,data of different groups were compared;Stenosis of carotid artery,vertebral artery and contralateral subclavian artery were also studied,and their influence on the Vertebral artery steal waveform was analysed.Results(1) The group with mild Sub-A stenosis has a lower ratio of Vertebral artery steal spectrum than the group with Sub-A stenosis above mild(P<0.001);The group with moderate Sub-A stenosis has a significantly lower ratio of dominant steal spectrum than the group with Sub-A stenosis above moderate (P<0.001).(2) Patient group with simply unlateral Sub-A stenosis has a higher ratio of Vertebral artery steal spectrum than the group with complicated carotid artery,Vertebral artery or contralateral Sub-A stenosis(P<0.05). Conclusions Vertebral artery steal Doppler spectrum was mainly decided by proximal Sub-A stenosis,and was affected by other extracranial cerebral arteries.更多还原