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测定阻抗微分心动图(ICG)不仅可用于计算心输出量,而且能提供多种心脏生理信息。但用ICG来测定左室的排血始点与终点,目前尚缺乏有说服力的理论依据和统一的测定方法,各家测定的左室排血时间差异较大。 本研究通过同步描记612例食(或中)指血管容积脉搏图、Ⅱ导心电图和ICG,发现所有ICG主波上升支始点(B点)到负波最低点(X点)的距离等于食(或中)指
Impedance calculus cardiography (ICG) can be used not only to calculate cardiac output, but also to provide a variety of cardiac physiological information. However, ICG to determine the starting point and end point of left ventricular drainage, there is a lack of convincing theoretical basis and a unified method of determination, the determination of the left ventricular ejection time varies widely. In this study, 612 cases of food (or middle) vascular volume pulse chart, Ⅱ ECG and ICG were recorded simultaneously and found that the distance between the beginning point of the rise of the main wave of ICG (point B) and the lowest point of the negative wave (point X) Or medium) means