Related Experiment Video
Updated: Jul 28, 2026
Assessment of Cardiac Morphological and Functional Changes in Mouse Model of Transverse Aortic Constriction by Echocardiographic Imaging
Published on: June 21, 2016
Comparative overview of cardiac output measurement methods: has impedance cardiography come of age?
1Cardiology Division, University of California, San Diego School of Medicine and UCSD Medical Center, San Diego, CA 92103.
Insights
Cardiac output monitoring is crucial for heart failure management. Impedance cardiography offers a practical, routine alternative to complex methods for assessing cardiac function and treatment response.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Technology
Background:
- Cardiac output (CO) is vital for assessing myocardial function and tissue perfusion.
- Declines in CO can indicate heart failure progression, while improvements may signal treatment efficacy.
- Current CO measurement methods are often invasive, costly, and require specialized expertise, limiting routine clinical use.
Purpose of the Study:
- To provide a comparative overview of cardiac output measurement techniques.
- To highlight the potential of impedance cardiography (ICG) for routine CO assessment.
- To evaluate ICG's utility in managing heart failure patients.
Main Methods:
- Comparative review of established cardiac output measurement strategies.
- Emphasis on advancements and applications of impedance cardiography.
- Discussion of ICG's feasibility for serial patient monitoring.
Main Results:
- Traditional CO methods present significant practical limitations for routine clinical application.
- Impedance cardiography demonstrates potential as a non-invasive, accessible tool for CO trending.
- ICG may facilitate more frequent and practical assessment of cardiac function.
Conclusions:
- Impedance cardiography offers a promising, viable alternative for the routine assessment and trending of cardiac output.
- ICG can aid in the management of both chronic and acute conditions, including heart failure.
- Further adoption of ICG could improve patient monitoring and therapeutic response evaluation.
Abstract:
Cardiac output, usually expressed as liters of blood ejected by the left ventricle per minute, is a fundamental measure of the adequacy of myocardial function to meet the perfusion needs of tissue at any time. Decreases in cardiac output over time (when cardiac output is measured under similar conditions) may signal myocardial functional deterioration and the onset or progression of heart failure. Conversely, improvements in cardiac output may indicate a positive response to medical therapy. However, most methods for evaluating cardiac output are technically demanding, require specialized training and specialized environments for measurement, and are costly. Therefore, most measurement techniques are impractical for routine evaluation of disease progression and/or response to treatment in the prevention and/or management of heart failure. This paper provides a comparative overview of commonly employed cardiac output measurement strategies with emphasis on developments in impedance cardiography which suggest that impedance cardiography has the potential to make routine assessment and trending of cardiac output a viable alternative to assist in the management of both chronically and acutely ill patients, including those with heart failure. (c)2000 by CHF, Inc.
Related Concept Videos
01:05Pulse
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
01:11Cardiac Output and Stroke Volume
In an average resting adult male, the typical cardiac output averages...
01:17Imaging Studies for Cardiovascular System I:Echocardiography
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...