单纯主动脉瓣反流患者颈动脉内径及血流变化的研究

Hemodynamic and Diameter Changes of Carotid Arteries in Patients with Pure Aortic Regurgitation

目的:为间接判定主动脉瓣反流(AR)程度寻找新方法。方法:超声观察AR患者和健康人颈动脉频谱形态;计算直径变化率;分析血流动力学参数。结果:轻、中、重度AR组出现重搏波的概率分别为66%、83%、88%。中度AR组有3例、重度AR组有4例舒张期血流达基线。39%重度AR组患者舒张期血流反向。AR组与对照组相比,EDV下降,S/D、PI和RI增高,直径变化率增高。结论:颈动脉频谱形态和血流动力学变化可提示中重度AR。

Objective：To find a new indicator of aortic regurgitation（AR）.Methods：Patients with AR and 20 control subjects were assessed for pulse wave contour,velocity,diameter and other indices of carotid artery.Results：Bisferious waveforms seen in ligh AR group,moderate AR group and severe AR group were 66%,83%,88%,respectively.Three patients in moderate group and 4 patients in severe group had zero level diastolic flow in CCA.Diastolic reversed flow was determined in 7（39%） patients in severe group.Compared with controls ,changes of decreased EDV,increased S/D,RI,PI and shrink ratio were revealed in patients with AR,especially in severe AR group. Conclusion ： Pulse wave contour and indices of carotid artery can be used in recognition of AR.