Korean J Crit Care Med.  2006 Dec;21(2):77-82.

Comparison of Impedance Cardiography with Thermodilution of Hemodynamic Parameters in Critically Ill Patients

• Kang HG
• Chung SW
• Byun KH
• Kim IB

Abstract

BACKGROUND
To evaluate the feasibility of noninvasive hemodynamic monitoring (impedance cardiography, ICG) in critically ill patients, we compared this technique with simultaneous invasive monitoring with a pulmonary artery thermodilution catheter.
METHODS
A prospective observational study was done comparing invasive monitoring and noninvasive monitoring in 12 critically ill patients. The cardiac output (CO), the stroke volume (SV) and the systemic vascular resistance (SVR) measured by using a standard thermodilution pulmonary artery catheter technique were compared with the corresponding measurements simultaneously using an ICG.
RESULTS
The value of CO, SV and SVR measured by ICG were closely correlated to those by the thermodilution methods [r: 0.659 (p<0.01), 0.536 (p<0.01), 0.738 (p<0.01)].
CONCLUSIONS
ICG can provide hemodynamic information previously available only by invasive monitoring with a thermodilution catheter.

Keyword

Hemodynamics; Cardiac output; Catheters; Impedance cardiography

MeSH Terms

Cardiac Output
Cardiography, Impedance*
Catheters
Critical Illness*
Electric Impedance*
Hemodynamics*
Humans
Observational Study
Prospective Studies
Pulmonary Artery
Stroke Volume
Thermodilution*
Vascular Resistance