Assessment of Aortic Insufficiency by Transcutaneous Doppler Ultrasound
Assessment of Aortic Insufficiency by Transcutaneous Doppler Ultrasound
复制标题
经皮多普勒超声评估主动脉瓣关闭不全
DOI：
10.1161/01.cir.52.5.874
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发表时间：
1975
期刊：
影响因子：
37.8
通讯作者：
D. Boughner
中科院分区：
文献类型：
--
作者：
D. Boughner
应用2.2MHz定向多普勒超声仪，对15例正常人和15例主动脉瓣关闭不全患者的主动脉瓣瞬时峰值流速进行了动态观察。将探头定位在胸骨上切迹中，并向后瞄准，以大致平行于血流的角度穿过降主动脉弓。同时记录心电图、心音图和颈动脉脉搏描记。在主动脉瓣关闭不全患者中，存在正常人不存在的显著舒张期血流。收缩期和舒张期速度描记下的面积代表每搏输出量向前和向后移动的距离。该比值用于估算返流百分比，范围为9%-68%。根据主动脉瓣反流患者的左心室血管造影，使用单平面心室容积测量值计算心室输出量，并与Fick心输出量进行比较，以估计真实的反流百分比。与多普勒估计值（r = 0.91）获得了很强的相关性，证实了这种简单的超声技术可以准确地评估主动脉瓣关闭不全的程度。
Using a 2.2 MHz directional Doppler ultrasound unit, the instantaneous peak aortic velocity pattern was recorded transcutaneously in 15 normal persons and 15 patients with aortic insufficiency. The transducer was positioned in the suprasternal notch and aimed posteriorly to cross the descending aortic arch at an angle approximately parallel to blood flow. The electrocardiogram, phonocardiogram, and carotid pulse tracings were recorded simultaneously. In patients with aortic insufficiency there was significant diastolic flow that was not present in normal persons. The planimetered area under the systolic and diastolic velocity tracings represents the distance forward and backward that the stroke volume moves. The ratio was used to approximate the percent regurgitation, which ranged from 9% to 68%. From left ventricular angiograms in the patients with aortic regurgitation single plane ventricular volume measurements were used to calculate ventricular output and when compared with the Fick cardiac output gave an estimate of true percent regurgitation. A strong correlation was obtained with the Doppler estimate (r = 0.91), confirming that this simple ultrasound technique can accurately assess the degree of aortic insufficiency.