论文部分内容阅读
本文应用二维超声多普勒技术，以经胸壁与经食道两种检测方法，对心肌梗塞、心肌缺血及正常人３组共１００例进行左心室形态构型与机能的研究。检测１６项参数进行组间对比以及对左室容积和每搏量进行多元回归分析，并且应用敏感参数进行判别分析。结果发现：冠心病尤其是心肌梗塞主要的左室形态改变是中部环径增大，使左室由锥体形向球体形转化；主要的功能改变是射血分数降低及泵血时左室工作方式的改变由正常时的中部环向收缩及长径轴向收缩为主，变为底部环向收缩为主。多元回归分析表明乳头肌水平环径对于左室每搏量及容积均为重要参数，在两个临界水平建立的判别函数有较大的实用价值。
In this study, two-dimensional ultrasound Doppler technique was used to study the morphology and function of left ventricle in 100 patients with myocardial infarction, myocardial ischemia and normal persons in three groups. 16 parameters were tested for comparison between groups and multiple regression analysis of left ventricular volume and stroke volume, and discriminant analysis was performed using sensitive parameters. The results showed that coronary heart disease, especially myocardial infarction, the main left ventricular morphological changes in the central ring diameter increases, the left ventricle from cone to sphere-shaped transformation; the main functional changes are lower ejection fraction and pump blood left ventricular work The change from the central ring to the normal contraction and long axis of axial contraction mainly to the bottom of the main ring contraction. Multivariate regression analysis showed that the horizontal ring diameter of papillary muscle was an important parameter for left ventricular stroke volume and volume, and the discriminant functions established at two critical levels had great practical value.