引言早期的研究使用了点电极的许多不同组合方式在胸部或四肢记录了心脏的阻抗波动。通常,由于这些研究缺乏有意义的数据,因而不能得到与其它测量心脏活动的方法相容的信息。本文将主要讨论环绕胸部两端的带状电极的使用和阻抗波中收缩期部分的向上外延的使用。这是首先由Patterson等人提出,Kubicek等人进一步完善的。此项技术已有 INTRODUCTION Earlier studies used a number of different combinations of point electrodes to record cardiac impedance fluctuations in the chest or limbs. Often, no information is available that is compatible with other methods of measuring cardiac activity due to the lack of meaningful data for these studies. This article will focus on the use of strip electrodes around the ends of the chest and the upward epitaxial extension of the systolic part of the impedance wave. This is first proposed by Patterson et al., Further refined by Kubicek et al. This technique already exists