Kong及其同事已将心阻抗图这一无创性方法用于监测血管神经性晕厥患者的心排出量。作者晚近用心阻抗图研究心力衰竭病人,观察到有特征性的舒张波。由放置在胸部的4条电极记录心动周期中胸内电阻变化,根据收缩波形态的大小估价每搏输出量。受 Kong and colleagues have used a cardiac impedance map, a noninvasive method, to monitor cardiac output in patients with vascular neuropathies. The authors recently studied cardiac impedance patients with heart failure, observed a characteristic diastolic. Thoracic resistance changes were recorded by 4 electrodes placed on the chest, and the stroke volume was estimated according to the size of the contractile waveform. By