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为探讨冠状动脉病变支数对三维超声心动图（３ＤＥ）左室收缩功能测量结果的影响，应用多平面经食管３ＤＥ技术测量了冠状动脉单支血管病变患者９例（Ａ组）及多支血管病变患者１１例（Ｂ组）的左室舒张末期容量（ＥＤＶ）、收缩末期容量（ＥＳＶ）、心搏量（ＳＶ）及射血分数（ＥＦ），并与二维超声心动图（２ＤＥ）及左室造影（ＬＶＡ）的测值进行了对比，结果显示：１．Ａ、Ｂ两组患者中，２ＤＥ测量的ＥＤＶ、ＥＳＶ、ＳＶ及ＥＦ与ＬＶＡ相应测值仅呈中度相关，３ＤＥ则呈高度相关，且３ＤＥ所测ＥＤＶ、ＥＳＶ对左室造影结果的低估程度仅为２ＤＥ方法的一半；２．Ａ、Ｂ两组患者中，２ＤＥ所测ＥＦ均高于左室造影结果（Ｐ＜０．０１），３ＤＥ所测ＥＦ则与左室造影测值无显著差异（Ｐ＞０．０５）。３．用２ＤＥ、３ＤＥ及ＬＶＡ３种方法测量Ｂ组患者的ＥＦ较Ａ组患者明显降低（Ｐ＞０．０５），而ＥＤＶ则显著增加（Ｐ＜０．０５）。表明冠状动脉病变支数对２ＤＥ和３ＤＥ心功能测量的准确性有一定的影响；经食管３ＤＥ测量冠心病患者左室功能的准确性优于２ＤＥ方法，为左室收缩功能的定量评价提供了简便可行的新途径
In order to investigate the effect of coronary lesion count on the measurement of left ventricular systolic function in three-dimensional echocardiography (3DE), nine patients with coronary artery single vessel disease (group A) and multi-vessel (EDV), end-systolic volume (ESV), stroke volume (SV) and ejection fraction (EF) in 11 patients with pathological changes (group B), and compared with two-dimensional echocardiography Left ventricular angiography (LVA) measurements were compared, the results showed that: 1. In group A and B, EDV, ESV, SV and EF measured by 2DE were only moderately correlated with those of LVA, and 3DE were highly correlated with each other. The underestimation of left ventricular angiography Only half of the 2DE method; 2. In group A and group B, the EF measured by 2DE was higher than that by left ventriculography (P <0.01), while the EF measured by 3DE had no significant difference with that of left ventriculography (P> 0.05). 3. EF measured by 2DE, 3DE and LVA methods in group B was significantly lower than that in group A (P> 0.05), while EDV was significantly increased (P <0.05). The results showed that the number of coronary lesions had a certain influence on the accuracy of 2DE and 3DE cardiac function measurement. The accuracy of 3DE measurement of left ventricular function in patients with coronary heart disease was better than that of 2DE by transesophageal 3DE, which provided a simple and convenient method for the quantitative evaluation of left ventricular systolic function Feasible new way