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目前对左室在正常或异常情况下,尤其在缺血期的左室收的解剖形态学变化受到重视。近年来,对急性心肌缺血情况下的心肌收缩和舒张功能、局部室壁运动、心室射血分数、心室腔径线、室壁厚度、室壁张力和压力-容积的变化进行了深入研究,现简要综述如下。 1、急性心肌缺血对心肌收缩和舒张的影响动物实验研究发现,冠状动脉急性闭塞可引起局部室壁运动和血液动力学异常改变,未缺血区功能代偿性增强。缺血区局部室壁运动减弱,节段性室壁变薄,左室压力最大上
At present, attention is being paid to anatomical changes of the left ventricle in the normal or abnormal conditions, especially in the ischemic period. In recent years, the changes of myocardial contractile and diastolic function, local wall motion, ventricular ejection fraction, ventricular cavity diameter, wall thickness, wall tension and pressure-volume in acute myocardial ischemia were studied in depth. The brief summary is as follows. 1, acute myocardial ischemia on myocardial contractility and diastolic animal studies found that acute coronary occlusion can cause local wall motion and hemodynamic abnormalities, not compensatory increase in ischemic function. Local ischemic area decreased wall motion, segmental wall thinning, left ventricular pressure on the largest