Whole-body impedance cardiography in the measurement of cardiac output

Abstract

There was close agreement between whole-body impedance cardiography and thermodilution in the measurement of cardiac output in patients with coronary artery disease without cardiac shunts and valvular lesions. The repeatability of the impedance method was significantly better than the repeatability of thermodilution. Whole-body impedance cardiography can be recommended for the assessment of cardiac output and its changes in the resting state. Whole-body impedance cardiography is a feasible and handy method for noninvasive and continuous measurement of cardiac output.

Transthoracic electrical bioimpedance: A means of filling the void?

“…The whole body impedance used by Imhoff uses different proprietary equations to derive its value for the cardiac output from other methods. Their results are in contrast to three other papers investigating whole body impedance 58–60 . Similarly Hirschl et al .…”

Increased Cardiac Workload in the Upright Posture in Men: Noninvasive Hemodynamics in Men Versus Women

“…Our study has several limitations. The noninvasive recordings of cardiac output require mathematical equations and simplification of physiology, 38 but invasive measurements are not justified without a clinical reason. The present methods have been validated against invasive methods, 32,34,67 and we have no reason to suspect that the recordings would be less reliable in the upright position between sexes.…”

“…36,37 The stroke volume and cardiac output measured using CircMon whole-body impedance cardiography agree with values measured using 3-dimensional ultrasound and the thermodilution method, respectively, and agreement with the latter has been shown in both supine and upright positions. 34,36,38 An introductory head-up tilt was performed before the recordings. The actual measurement consisted of 3 consecutive 5-minute periods with continuous capture of data: 5 minutes supine, 5 minutes of passive head-up tilt to 60°, and 5 minutes supine.…”

Human cardiovascular dose–response to supplemental oxygen

“…SV icg , SVR icg , AC icg , pulse transmission time (PTT icg : the time delay between the two arterial plethysmograms obtained from the heart synchronous impedance wave), and pulse wave velocity (PWV icg : average elastic state of the vessel pathway), we used commercially available whole‐body impedance cardiography (ICG) equipment (CircMonTM B202; JR Medical, Tallinn, Estonia). The method has previously been compared with invasive measurements in intensive care units (Koobi et al. 1997a,b, 2001).…”