摘要
通过理论分析发现心室收缩期的最大张力、心室收缩末期压力和每搏心输出量三者之间存在着相互关系,从而获得一种新的简便的评价心室肌收缩力的方法—心室收缩末期容积—压力相关直线斜率(Emax)。用12条狗进行实验验证,测得的Emax值(0.60±0.17kPa/ml)与复杂方法测得的值相接近;而且重复性好,能非常敏感地反映出心肌收缩力的变化。结果表明,采用这种方法来评价心肌缺血时的心室肌收缩功能,比其他血流动力学参数更有效。因此,本方法是一种有效的评价心室肌收缩力的方法。
After making theoretical analysis,the relationship among the maximal
tension of ventricularcontraction, left ventricular end-systolic pressure and stroke volume was
found and then.a new andsimple method for evaluating left ventricular contractility,the slope of
the left ventricular end-systolicpressure-volume relation(Emax) was found.12 male mongrel
dogs were used to test this method,theresults show that the value of Emax 0.60 ± 0.17 kPa/ml
obtained from this simple method is veryclose to the value got from complicated method;it has
good repetition and is very sensitive to the varia-tion of myocardial contraction.Using the
method to evaluate left ventricular contraction after ischemia,we found Emax is more effective
than other hemodynamic parameters.
出处
《航天医学与医学工程》
CAS
CSCD
1995年第2期139-142,共4页
Space Medicine & Medical Engineering
基金
CMB基金
关键词
心室
心肌收缩
心肌缺血
心室压力
heart ventricle myocardial contraction
myocardial ischemia ventricular pressure eval-uationAddress reprint requests to :WANG
Zhengrong.Biomedical Engineering Units,West China Universityof Medical
Sciences,Chengdu,610041, China