Doppler echocardiographic evaluation of left ventricular function.

Doppler echocardiographic evaluation of left ventricular function.
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DOI:
10.1111/j.1540-8175.1990.tb00344.x
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发表时间:
1990-01-01
期刊:
Echocardiography (Mount Kisco, N.Y.)
影响因子:
--
通讯作者:
Sagar, K B
Sagar, K B
中科院分区:
其他
文献类型:
--
作者:
Saeian, K;Wann, L S;Sagar, K B

文献摘要

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主动脉血流最大加速度的有创测量是左心室功能的敏感指标。 多普勒超声心动图提供主动脉血流加速度的非侵入性测量。 我们的研究建立了多普勒衍生指数的主动脉血流速度的左心室功能评价的准确性。 多普勒衍生的峰值速度和平均加速度显示出良好的相关性,有创测量峰值左心室dP/dt和最大主动脉血流量(dQ/dt)在不同的心率,前负荷,后负荷,和正性肌力状态。 在不同程度的心肌缺血条件下,多普勒导出的峰值速度和平均加速度与侵入性测量的左心室dP/dt和dQ/dt之间观察到类似的相关性。 因此,多普勒超声心动图提供了一种准确的无创方法来评价左心室功能。
Invasive measurements of maximum acceleration of aortic blood flow are sensitive indicators of left ventricular function. Doppler echocardiography provides noninvasive measurements of aortic blood flow acceleration. Our studies establish the accuracy of Doppler-derived indices of aortic blood flow velocity for evaluation of left ventricular function. Doppler-derived peak velocity and mean acceleration showed excellent correlation with invasively measured peak left ventricular dP/dt and maximum aortic blood flow (dQ/dt) under varying heart rate, preload, afterload, and inotropic states. Similar correlations were observed between Doppler-derived peak velocity and mean acceleration and invasively measured left ventricular dP/dt and dQ/dt under conditions of varying degrees of myocardial ischemia. Thus, Doppler echocardiography provides an accurate noninvasive method to evaluate left ventricular performance.