Cevik Y, Değertekin M, Başaran Y, Turan F, Pektaş O
Koşuyolu Heart and Research Hospital, Istanbul, Turkey.
Angiology. 1995 Feb;46(2):157-63. doi: 10.1177/000331979504600210.
The correlation between echocardiographically and angiographically calculated ejection fraction and systolic excursion of the mitral annulus was studied in 81 patients. Knowing that the mitral annulus changes its size, shape, and position during the cardiac cycle, the authors measured systolic excursion of the annulus by 2D echocardiography. Displacement of the mitral annulus was measured from four different points (medial, lateral, anterior, posterior) by apical four-chamber and apical two-chamber approaches. Patients with and without regional wall motion abnormalities were included. Left ventricular volumes and ejection fraction (EF) were calculated in the standard manner introduced by Teichholz et al and also with biplane left ventriculography. As a result, EF calculated by cineangiography, was moderately correlated with the Teichholz method (r = 0.66) while it was highly correlated with measurements of mitral annular motion (MAM) (r = 0.87). The correlation can be expressed by the regression equation, EF (angiography) = 5.7 MAM (in mm) -6.5. They conclude that measurements of annular motion is an easy and reliable index of left ventricular function as an alternative to traditional methods.
在81例患者中研究了超声心动图和血管造影计算的射血分数与二尖瓣环收缩期位移之间的相关性。鉴于二尖瓣环在心动周期中会改变其大小、形状和位置，作者通过二维超声心动图测量了二尖瓣环的收缩期位移。通过心尖四腔心切面和心尖两腔心切面，从四个不同点（内侧、外侧、前侧、后侧）测量二尖瓣环的位移。纳入了有和没有局部室壁运动异常的患者。采用Teichholz等人介绍的标准方法以及双平面左心室造影计算左心室容积和射血分数（EF）。结果，血管造影计算的EF与Teichholz方法中度相关（r = 0.66），而与二尖瓣环运动（MAM）测量高度相关（r = 0.87）。这种相关性可用回归方程表示，EF（血管造影）= 5.7MAM（以毫米为单位）-6.5。他们得出结论，二尖瓣环运动测量是一种简便可靠的左心室功能指标，可替代传统方法。
