Wang David J, Gottlieb Stephen S
Division of Cardiology, University of Maryland School of Medicine, MD 21201, USA.
Curr Cardiol Rep. 2006 May;8(3):180-6. doi: 10.1007/s11886-006-0031-0.
Thoracic electrical bioimpedance, also known as impedance cardiography (ICG), is a noninvasive method to obtain hemodynamic measurements, including cardiac output. Recently, there has been a flurry of reports on the clinical use of ICG. Authors have suggested that ICG measurements are useful for a myriad of situations, including diagnosis of heart failure, monitoring of a patient's clinical status, and assisting in medicine titration decisions. However, data continue to suggest poor correlation between current generation ICG devices and invasive measurements of cardiac output, especially in heart failure patients. ICG is also not able to accurately measure left ventricular filling pressures. There are limited data demonstrating any improved outcomes using ICG in the clinical setting. Given the available data, ICG use should be limited to the research setting.
胸电阻抗，也称为阻抗心动图（ICG），是一种获取包括心输出量在内的血流动力学测量值的非侵入性方法。最近，关于ICG临床应用的报道纷至沓来。作者们认为，ICG测量在多种情况下都很有用，包括心力衰竭的诊断、患者临床状态的监测以及协助药物滴定决策。然而，数据仍显示，当前一代ICG设备与心输出量的侵入性测量之间的相关性较差，尤其是在心力衰竭患者中。ICG也无法准确测量左心室充盈压。在临床环境中，使用ICG能改善预后的数据有限。鉴于现有数据，ICG的使用应限于研究环境。
