Osypka M J, Bernstein D P
Department of Engineering, CardioDynamics International Corporation, San Diego, CA 92121, USA.
AACN Clin Issues. 1999 Aug;10(3):385-99. doi: 10.1097/00044067-199908000-00008.
Thoracic electrical bioimpedance (TEB) is a harmless, noninvasive, user-friendly technology with wide patient acceptance. Stroke volume (SV) determination is important because it helps to define oxygen transport. Measurement of SV by TEB is rooted in concrete, basic electrical theory, as well as in theoretical models of electrical behavior of the human thorax and great thoracic vessels. This article is concerned with basic electrical theory as applied to TEB, signal acquisition, and the origin of the thoracic cardiogenic impedance pulse (delta Z). The appendix of the chapter features a more extensive overview of alternating current theory as applied to electrical bioimpedance.
胸电阻抗（TEB）是一种无害、非侵入性且用户友好的技术，患者接受度高。每搏输出量（SV）的测定很重要，因为它有助于确定氧输送。通过TEB测量SV基于具体的基础电学理论，以及人体胸部和大血管电行为的理论模型。本文关注应用于TEB的基础电学理论、信号采集以及胸源性阻抗脉冲（ΔZ）的起源。本章附录对应用于电阻抗的交流电理论进行了更广泛的概述。
