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| Noninvasive Ambulatory Hemodynamic Monitoring Based on Electrocardiogram and Impedance Cardiography |
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Abstract Two different noninvasive ambulatory hemodynamic monitoring devices
(belt-type and chest-type) based on Electrocardiogram (ECG) and
Impedance Cardiography (ICG) has been designed, fabricated and
tested. Hardware designs of the two ambulatory hemodynamic
monitoring devices based on Tetrapolar configuration and placement
of the electrodes were introduced. Hemodynamic parameters such as
Stroke Volume (SV), Cardiac Output (CO) and Cardiac Index (CI) can
be estimated according to Kubicek Formula by extracting
characteristic points and characteristic periods in the ICG Signal.
CI is CO divided by body surface area. CI is comparable among
different people because it is not influenced by the body height and
weight. The body's physiological responses to postural change are
primarily a reaction to the change of gravity, because change of
gravity can cause changes of blood flow distribution in organs and
tissues. Different body postures (upright or supine) can result in
reducing or rising of CO. The detection accuracy has also been
validated with a commercial ICG detection instrument from Mindray
company, and the correlation coefficient is 0.83.
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| Cite this article: |
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Xinyu Hu,Xianxiang Chen,Ren Ren. Noninvasive Ambulatory Hemodynamic Monitoring Based on Electrocardiogram and Impedance Cardiography[J]. Journal of Fiber Bioengineering and Informatics, 2015, 8(4): 741-749.
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2015, Vol. 8 
