在心肌功能研究中,迄今尚无单一理想的指标,可作心肌功能的判断,必须采用多项指标综合分析,才能作出评定。在这些指标中,许多是不受或很少受到负荷状态影响的,诸如心室压的最大变化速率 (dp)/(dt)max、心肌收缩速度 V_(CE)及最大收缩速度 Vmax In the study of myocardial function, so far there is no single ideal indicator for myocardial function can judge, we must use a comprehensive analysis of a number of indicators to make assessment. Many of these indicators are unaffected or less affected by loading conditions, such as the maximum rate of change of ventricular pressure (dp) / (dt) max, the myocardial contractile velocity V CE and the maximum contractile velocity V max