<abstract xmlns="http://www.w3.org/1999/xhtml"><p>During the last decades the use of electrical bioimpedance (EBI) in the medical field has been the subject of extensive research, as an affordable, harmless and non-invasive technology. In some specific applications, such as body composition assessment where EBI has proven a good degree of effectiveness and reliability, the use of textile electrodes and measurement garments have shown good performance and reproducible results. Impedance cardiography (ICG) is a modality of EBI that can benefit from the implementation and use of wearable sensors. ICG is based on continuous impedance measurements of a longitudinal segment across the thorax taken at a single frequency. The need for a specific electrode placement on the thorax and neck can be easily ensured with the use of a garment with embedded textile electrodes, also known as “textrodes.” The first step towards the implementation of garment-based ICG is to determine the quality of ICG measurements with textile sensors to allow estimation of fundamental ICG parameters. In this work, the measurement performance of a 2-belt set with incorporated textrodes for thorax and neck is compared against ICG measurements obtained with Ag/AgCl electrodes. The analysis is based on the quality of the fundamental ICG signals (ΔZ, dZ/dt and ECG), systolic time intervals and other ICG parameters. The results indicate the feasibility of using textrodes for ICG measurements with consistent measurements and relatively low data dispersion. Thus, enabling the development of measuring garments for ICG measurements.</p></abstract>

During the last decades the use of electrical bioimpedance (EBI) in the medical field has been the subject of extensive research, as an affordable, harmless and non-invasive technology. In some specific applications, such as body composition assessment where EBI has proven a good degree of effectiveness and reliability, the use of textile electrodes and measurement garments have shown good performance and reproducible results. Impedance cardiography (ICG) is a modality of EBI that can benefit from the implementation and use of wearable sensors. ICG is based on continuous impedance measurements of a longitudinal segment across the thorax taken at a single frequency. The need for a specific electrode placement on the thorax and neck can be easily ensured with the use of a garment with embedded textile electrodes, also known as “textrodes.” The first step towards the implementation of garment-based ICG is to determine the quality of ICG measurements with textile sensors to allow estimation of fundamental ICG parameters. In this work, the measurement performance of a 2-belt set with incorporated textrodes for thorax and neck is compared against ICG measurements obtained with Ag/AgCl electrodes. The analysis is based on the quality of the fundamental ICG signals (ΔZ, dZ/dt and ECG), systolic time intervals and other ICG parameters. The results indicate the feasibility of using textrodes for ICG measurements with consistent measurements and relatively low data dispersion. Thus, enabling the development of measuring garments for ICG measurements.

Textrode-enabled transthoracic electrical bioimpedance measurements – towards wearable applications of impedance cardiography

Journal of Electrical Bioimpedance

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

During the last decades the use of electrical bioimpedance (EBI) in the medical field has been the subject of extensive research, as an affordable, harmless...

		dZ/dt max (Ω/s²)		SV (ml)		LVET (ms)		R-Z Time (ms)
		avg	std	avg	std	avg	std	avg	std
S1	RedDot	1.03	0.05	71.52	3.94	336.99	17.34	149.78	3.87
	Tex-Belt	0.94	0.03	69.15	3.63	341.07	18.41	145.60	3.54
S2	RedDot	0.71	0.07	70.04	4.88	328.58	16.92	164.20	6.54
	Tex-Belt	0.61	0.05	78.64	5.28	349.51	17.77	173.14	5.04
S3	RedDot	0.74	0.05	76.03	4.62	391.11	22.36	159.33	7.73
	Tex-Belt	0.85	0.09	77.07	6.20	376.43	32.93	156.25	10.97

Textrode-enabled transthoracic electrical bioimpedance measurements – towards wearable applications of impedance cardiography

Article Category: Articles

Pubblicato online: 30 ott 2013

Pagine: 45 - 50

Ricevuto: 04 gen 2013

DOI: https://doi.org/10.5617/jeb.542

Parole chiave
Bioimpedance, impedance cardiography, ICG, textile electrodes, textrodes

© 2013 J. C. Marquez, M. Rempfler, F. Seoane and K. Lindecrantz, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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ICG PARAMETERS

Textrode-enabled transthoracic electrical bioimpedance measurements – towards wearable applications of impedance cardiography

Article Category: Articles

Pubblicato online: 30 ott 2013

Pagine: 45 - 50

Ricevuto: 04 gen 2013

DOI: https://doi.org/10.5617/jeb.542

Parole chiaveBioimpedance, impedance cardiography, ICG, textile electrodes, textrodes

© 2013 J. C. Marquez, M. Rempfler, F. Seoane and K. Lindecrantz, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

ICG PARAMETERS

Parole chiave
Bioimpedance, impedance cardiography, ICG, textile electrodes, textrodes