Ventricular volume curves obtained from thoracic impedance measurements

机译：从胸阻抗测量获得的心室容积曲线

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An electrode arrangement for impedance measurements has been developed, which results in a waveform that appears to represent ventricular volume. The waveform shows an increasing systolic impedance change and has the general shape of a ventricular volume curve. The surface electrode arrangement has been evaluated on six subjects in the supine, sitting position and during bicycle exercise at 50 W. An impedance measurement using an electrode arrangement similar to that used in conventional impedance cardiography was also recorded along with an arterial pressure waveform. The change in the slope of the ventricular filling curve with positional change and exercise was as would be expected based on physiology. The start of the ventricular signal was delayed from what would be expected based on the arterial pressure pulse, whereas the conventional impedance waveform started before the pressure purse. More research is needed to evaluate the measurements as estimations of stroke volume or other cardiac performance parameters.

机译：已经开发出用于阻抗测量的电极布置，其导致看起来代表心室容积的波形。波形显示收缩期阻抗变化增加，并具有心室容积曲线的一般形状。已经在仰卧，坐姿和在50 W的自行车运动期间对六名受试者进行了表面电极布置的评估。使用与传统阻抗心动描记法相似的电极布置，还记录了阻抗测量值以及动脉压波形。心室充盈曲线的斜率随位置变化和运动的变化是根据生理学预期的。心室信号的启动比基于动脉压力脉冲的预期延迟，而常规的阻抗波形在压力囊之前开始。需要更多的研究来评估测量结果，作为对卒中量或其他心脏功能参数的估计。

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《Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE》|1998年|P.444-446|共3页
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Patterson; R.; Li Wang;
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中图分类无线电电子学、电信技术;
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机译：胸椎阻抗心电图自动推导收缩期间隔持续无创监测运动时左心室功能

Ventricular volume curves obtained from thoracic impedance measurements

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