Mertes H, Nixdorff U, Erbel R, Meyer J
II. Medizinische Klinik und Poliklinik, Johannes-Gutenberg-Universität Mainz.
Z Kardiol. 1991 Aug;80(8):529-36.
Two-dimensional echocardiography has become a sensitive method to differentiate between normal and pathological myocardial function during exercise. Examining 50 healthy volunteers we determined normal values for global and regional left-ventricular function during bicycle exercise. Ejection fraction increased from 59 +/- 10% at rest to 85 +/- 7% at 210 watts workload, endsystolic volume decreased from 22.1 ml/m2 at rest to 7.1 ml/m2 at 210 watts. Enddiastolic volume showed a tendency to decrease from 55 +/- 21 ml/m2 at rest to 45 +/- 23 ml/m2 at 210 watts. Quantitative analysis showed an extended distribution both for Centerline- and Radiant-Method, during exercise Centerline-Method was superior. Two-dimensional echocardiography is useful for assessment of global and regional myocardial function during exercise. Decrease of ejection fraction or increase of endsystolic volume seems to be a pathological marker. Enddiastolic volume is a less useful parameter for evaluating left-ventricular function during stress. Quantitative analysis of left ventricular wall motion can be applied with restrictions.
二维超声心动图已成为区分运动期间正常和病理性心肌功能的一种敏感方法。通过检查50名健康志愿者，我们确定了自行车运动期间左心室整体和局部功能的正常值。射血分数从静息时的59±10%增加到210瓦负荷时的85±7%，收缩末期容积从静息时的22.1 ml/m²降至210瓦时的7.1 ml/m²。舒张末期容积有从静息时的55±21 ml/m²降至210瓦时的45±23 ml/m²的趋势。定量分析显示中心线法和辐射法在运动期间均有扩展分布，运动期间中心线法更优。二维超声心动图有助于评估运动期间的左心室整体和局部功能。射血分数降低或收缩末期容积增加似乎是一个病理性标志。舒张末期容积对于评估应激期间的左心室功能是一个不太有用的数据。左心室壁运动的定量分析应用时有一定限制。
