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为观察不同体位改变时的心血管反应及心阻抗血流图在实验中的应用价值。在各种体位时同步记录心电图、心音图、心阻流图、阻抗微分图和呼吸曲线。体位改变时HR、TPR、心泵功能、心收缩力和STI中的某些参数变化非常显著,其中STI的某些参数,已达到或接近临床轻度或中等程度心功能不正常的水平,但改为卧位可立即恢复,说明体位改变时的这些变化是反应性的、暂时性的、属生理性变异。实验中用阻抗血流图监测有利于观察多项参数。广泛地了解心血管反应。有助于采取相应措施。
To observe the different postural changes in cardiovascular response and heart impedance blood flow in the experimental value. In a variety of positions simultaneously recorded ECG, phonocardiogram, heart resistance flow diagram, impedance differential graph and respiratory curve. Some changes in HR, TPR, cardiac pump function, cardiac contractility, and STI at postural position vary significantly, with some of the STI parameters reaching or approaching clinically mild or moderate abnormalities in cardiac function, but Change to the lying position can be immediately restored, indicating that these changes in body position changes are reactive, temporary, is a physiological mutation. Impedance blood flow monitoring in the experiment is conducive to the observation of a number of parameters. Extensive understanding of cardiovascular responses. Help to take corresponding measures.