Aortic Flow Velocity and Acceleration as an Index of Ventricular Performance During Myocardial Infarction
Aortic Flow Velocity and Acceleration as an Index of Ventricular Performance During Myocardial Infarction
复制标题
主动脉血流速度和加速度作为心肌梗死期间心室性能的指标
DOI：
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发表时间：
1969
影响因子：
3.1
通讯作者：
R. K. Kordenat
中科院分区：
文献类型：
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作者：
P. Kezdi;E. Stanley;W. Marshall;R. K. Kordenat
在犬心肌梗死前、中、后测量主动脉血流和其他血流动力学变量的时间关系。在冠状动脉中放置螺旋镁丝，在大约10天内逐渐闭塞并发生梗死。血流动力学数据的系列测量结果显示，在梗死期间发生了显着变化，并在3天内恢复到梗死前水平。梗塞期间心率增加87，平均血压下降10%，无明显心律失常。主动脉血流量、流速和平均血流加速度分别下降8%、16%和23%，而射血前期无显著变化。提示心肌梗塞时血流动力学改变是心肌功能改变的结果。心肌梗死时，电和机械时间关系的测量是反映心脏功能的敏感指标。
The time relationships of aortic blood flow and other hemodynamic variables were measured prior to, during, and after myocardial infarction in the dog. A helical magnesium wire placed in the coronary artery produced gradual occlusion with infarction in approximately ten days. Serial measurements of hemodynamic data showed significant changes during the time of infarction with return to preinfarction levels within three days. The heart rate increased 87 and the mean blood pressure decreased 10% without significant arrhythmia during infarction. The aortic flow, velocity and mean acceleration of flow decreased 8, 16, and 23% respectively, while the pre-ejection period did not change significantly. These findings suggest that the hemodynamic changes during myocardial infarction are the result of altered myocardial function. The measurements of electrical and mechanical time relationships are sensitive indicators of cardiac performance in myocardial infarction.