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http://dx.doi.org/10.5370/KIEE.2018.67.12.1690

A Study on the Correlationship between Wearable ECG and Clinical ECG Measurements  

Lee, Kang-Hwi (Dept. of Biomedical Engineering, KonKuk University)
Lee, Seong-Su (Dept. of Biomedical Engineering, KonKuk University)
Kim, Sang-Min (Dept. of Biomedical Engineering, KonKuk University)
Lee, Hyeok-Jae (Dept. of Biomedical Engineering, KonKuk University)
Min, Kyoung-Jin (Dept. of Biomedical Engineering, KonKuk University)
Kang, Hyun-Kyu (Dept. of Biomedical Engineering, KonKuk University)
Lee, Joo-Hyeon (Dept. of Clothing and Textiles, Yonsei University)
Kwak, Hwy-Kuen (Hanwha Systems Co.,Ltd)
Ko, Yun-Soo (Hanwha Systems Co.,Ltd)
Lee, Jeong-Whan (Dept. of Biomedical Engineering, KonKuk University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.67, no.12, 2018 , pp. 1690-1698 More about this Journal
Abstract
Recent advances in ICT technology have transformed many of our daily lives and attracted a lot of attention to personal health. Heart beat measurement that reflects cardiac activities has been used in various fields such as exercise evaluation and psychological state evaluation for a long time, but its utilization method is limited due to its differentiation from clinical electrocardiogram. Therefore, in this study, we could observe the change of the measured signal according to the change of the distance and the position of the measuring electrodes which are non-standard electrode configuration. Based on the electric dipole model of the heart, correlation with clinical electrocardiogram could be confirmed by synthesizing multiple surface potentials measured with a shorter electrode distance than standard one. From the electromagnetic point of view, the distance between the measuring electrodes corresponds to the distance that the electric potential by the cardiac electric dipole moves, and the electric potential measured at the body surface is proportional to the moving distance of the electric potential. Therefore, it is preferable to make the distance between electrodes as long as possible, and to position the measuring electrode close to the ventricle rather than the atrium. In addition, it was found that standard electrocardiographic waveforms could be synthesized by using arithmetic sum of multiple measuring electrodes due to the relationship of electrical dipole vectors, which is obtained by dividing and positioning a plurality of measuring electrodes on a reference electrode line, such as Lead-I, Lead-II direction. Also, we obtained a significant Pearson correlation coefficient ($r=0.9113{\pm}0.0169$) as a result of synthetic experiments on four subjects.
Keywords
Wearable ECG; Clinical ECG; Heart dipole; Synthetic electrocardiogram; Electrode;
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1 E. Fung et al., "Electrocardiographic patch devices and contemporary wireless cardiac monitoring", Frontiers in Physiology, vol. 6, May 2015.
2 J. A. Walsh, E. J. Topol, and S. R. Steinhubl, "Novel Wireless Devices for Cardiac Monitoring", Circulation, vol. 130, no. 7, pp. 573-581, Aug. 2014.   DOI
3 A. M. Chan, N. Selvaraj, N. Ferdosi, and R. Narasimhan, "Wireless patch sensor for remote monitoring of heart rate, respiration, activity, and falls", Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE, pp. 6115-6118, 2013.
4 S. Meek and F. Morris, "ABC of clinical electrocardiography: Introduction. I-leads, rate, rhythm, and cardiac axis", British Medical Journal, vol. 324, no. 7334, pp. 415-418, 2002.   DOI
5 M. Altini et al., "An ECG patch combining a customized ultra-low-power ECG SoC with Bluetooth low energy for long term ambulatory monitoring", Proceedings of the 2nd Conference on Wireless Health, p. 15, 2011.
6 L. Kang-Hwi et al., "Implementation of Wearable Heart Activity Monitoring System having Modified Bipolar Electrode and Correlation Analysis with Clinical Electrocardiograph (ECG)", The Transactions of The Korean Institute of Electrical Engineers, vol. 57, no. 6, p. 1102-1108, Jun. 2008.
7 E. Frank, "General Theory of Heart-Vector Projection", Circ Res, vol. 2, no. 3, pp. 258-270, May 1954.   DOI
8 J. E. Madias, "Manual-based versus automation-based measurements of the amplitude of QRS complexes and T waves in patients with changing edematous states: clinical implications", Journal of Electrocardiology, vol. 41, no. 1, pp. 15-18, Jan. 2008.   DOI
9 D. B. Geselowitz, "Dipole theory in electrocardiography", The American Journal of Cardiology, vol. 14, no. 3, pp. 301-306, Sep. 1964.   DOI
10 W. H. Hayt, and J.A. Buck , Engineering Electromagnetics, 8th ed. New York: McGraw-Hill, 2012.
11 J. E. Madias, "aVR, An Index of all ECG Limb Leads, with Clinical Utility for Monitoring of Patients with Edematous States, Including Heart Failure", Pacing and Clinical Electrophysiology, vol. 32, no. 12, pp. 1567-1576, Nov. 2009.   DOI