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应用无创左右心功能同步检测仪测定左室射血分数（ＥＦ）下降患者９５例的心脏功能，并与３９例ＥＦ正常者比较。ＥＦ下降组的每搏出量、每搏指数均较正常组显著下降，病因以心肌炎、高血压病和冠心病为主，男性多于女性。在冠心病、高血压病、肺源性心脏病、风湿性心脏病和心肌炎等常见心血管疾病中，总阻抗均较对照组为高（Ｐ＜０．０１），总阻抗升高是患者ＥＦ下降的主要因素。总阻抗升高的原因除冠心病、高血压病的病因外，尚有血液粘度和精氨酸加压素浓度增高等因素。我们认为应用无创左右心功能同步检测仪测定不仅有助于了解冠心病、高血压病和心肌炎的病情，而且对ＥＦ值下降的患者更具有重要意义，以便经常观察治疗效果和判断预后
Ninety-five patients with normal EF were enrolled in this study. Cardiac function was measured in 95 patients with decreased left ventricular ejection fraction (EF) using a noninvasive left-right heart function detector. EF stroke group stroke volume, stroke index were significantly lower than the normal group, the etiology of myocarditis, hypertension and coronary heart disease, mainly men than women. In the common cardiovascular diseases such as coronary heart disease, hypertension, cor pulmonale, rheumatic heart disease and myocarditis, the total impedance was higher (P <0.01) than the control group The main factor of decline. In addition to the causes of total impedance increase in addition to the cause of coronary heart disease and hypertension, there are other factors such as blood viscosity and arginine vasopressin concentration increase. We believe that the application of non-invasive cardiac function test simultaneously not only helps to understand the condition of coronary heart disease, hypertension and myocarditis, but also has important significance for patients with decreased EF value so as to frequently observe the treatment effect and judge the prognosis