Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems

Antonio Bosnjak, OJ Escalona

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The use of wearable dry sensors for long term recordings of electrocardiographic bipolar leads located in comfortable areas of the body, is a requirement for detecting certain heart rhythms. Knowledge of the skin-electrode electrical performance of dry electrodes is necessary when seeking to improve various processing stages for signal quality enhancement. In this paper, methods for the assessment of skin-electrode impedance (Zse) of dry electrodes and its modelling are presented. We need to know the behavior of dry electrodes when they are moistened with skin sweat, either at the time of exercise or when it comes to warm climates, under the following posed hypothesis: the impedance magnitude of dry electrodes under study would be significantly lower after they have been moistened with sweat, and comparatively could reach levels of impedance characteristics presented by standard pre-gelled ECG electrodes. Measurements were carried out on selected dry-electrode materials such as silver, stainless steel, AgCl (dry), polyurethane and iron (Fe). These presented, |Zse| values between 500 kΩ and 1 MΩ within the main ECG frequency range (1 Hz – 100 Hz), under no sweat conditions, and values of few kΩ under artificial sweat conditions. However, in spite of the sweat conditions, open bandwidth ECG traces were of similar quality and stability, within tolerance; with dry AgCl electrode material presenting the best ECG trace performance.
LanguageEnglish
Title of host publicationIFMBE Proceedings
Subtitle of host publicationWorld Congress on Medical Physics and Biomedical Engineering
Place of PublicationSingapore
Chapter157
Pages871 - 875
Number of pages5
Volume68/3
ISBN (Electronic)978-981-10-9023-3
Publication statusPublished - 30 May 2018
Event World Congress on Medical Physics and Biomedical Engineering: IUPESM-2018 - Prague Conference Centre, Prague, Czech Republic
Duration: 3 Jun 20188 Jun 2018

Conference

Conference World Congress on Medical Physics and Biomedical Engineering
Abbreviated titleWC-2018
CountryCzech Republic
CityPrague
Period3/06/188/06/18

Fingerprint

Skin
Moisture
Electrodes
Monitoring
Electrocardiography
Polyurethanes
Silver
Stainless steel
Iron
Bandwidth
Sensors
Processing

Keywords

  • Dry electrodes
  • moistened skin-electrode impedance
  • spectroscopy
  • effect of sweat
  • arm ECG
  • wearable monitoring devices
  • heart rhythm

Cite this

Bosnjak, A., & Escalona, OJ. (2018). Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems. In IFMBE Proceedings: World Congress on Medical Physics and Biomedical Engineering (Vol. 68/3, pp. 871 - 875). [627] Singapore.
Bosnjak, Antonio ; Escalona, OJ. / Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems. IFMBE Proceedings: World Congress on Medical Physics and Biomedical Engineering. Vol. 68/3 Singapore, 2018. pp. 871 - 875
@inbook{e144f369b7244807975b5eccd48d4808,
title = "Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems",
abstract = "The use of wearable dry sensors for long term recordings of electrocardiographic bipolar leads located in comfortable areas of the body, is a requirement for detecting certain heart rhythms. Knowledge of the skin-electrode electrical performance of dry electrodes is necessary when seeking to improve various processing stages for signal quality enhancement. In this paper, methods for the assessment of skin-electrode impedance (Zse) of dry electrodes and its modelling are presented. We need to know the behavior of dry electrodes when they are moistened with skin sweat, either at the time of exercise or when it comes to warm climates, under the following posed hypothesis: the impedance magnitude of dry electrodes under study would be significantly lower after they have been moistened with sweat, and comparatively could reach levels of impedance characteristics presented by standard pre-gelled ECG electrodes. Measurements were carried out on selected dry-electrode materials such as silver, stainless steel, AgCl (dry), polyurethane and iron (Fe). These presented, |Zse| values between 500 kΩ and 1 MΩ within the main ECG frequency range (1 Hz – 100 Hz), under no sweat conditions, and values of few kΩ under artificial sweat conditions. However, in spite of the sweat conditions, open bandwidth ECG traces were of similar quality and stability, within tolerance; with dry AgCl electrode material presenting the best ECG trace performance.",
keywords = "Dry electrodes, moistened skin-electrode impedance, spectroscopy, effect of sweat, arm ECG, wearable monitoring devices, heart rhythm",
author = "Antonio Bosnjak and OJ Escalona",
year = "2018",
month = "5",
day = "30",
language = "English",
isbn = "978-981-10-9022-6",
volume = "68/3",
pages = "871 -- 875",
booktitle = "IFMBE Proceedings",

}

Bosnjak, A & Escalona, OJ 2018, Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems. in IFMBE Proceedings: World Congress on Medical Physics and Biomedical Engineering. vol. 68/3, 627, Singapore, pp. 871 - 875, World Congress on Medical Physics and Biomedical Engineering, Prague, Czech Republic, 3/06/18.

Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems. / Bosnjak, Antonio; Escalona, OJ.

IFMBE Proceedings: World Congress on Medical Physics and Biomedical Engineering. Vol. 68/3 Singapore, 2018. p. 871 - 875 627.

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems

AU - Bosnjak, Antonio

AU - Escalona, OJ

PY - 2018/5/30

Y1 - 2018/5/30

N2 - The use of wearable dry sensors for long term recordings of electrocardiographic bipolar leads located in comfortable areas of the body, is a requirement for detecting certain heart rhythms. Knowledge of the skin-electrode electrical performance of dry electrodes is necessary when seeking to improve various processing stages for signal quality enhancement. In this paper, methods for the assessment of skin-electrode impedance (Zse) of dry electrodes and its modelling are presented. We need to know the behavior of dry electrodes when they are moistened with skin sweat, either at the time of exercise or when it comes to warm climates, under the following posed hypothesis: the impedance magnitude of dry electrodes under study would be significantly lower after they have been moistened with sweat, and comparatively could reach levels of impedance characteristics presented by standard pre-gelled ECG electrodes. Measurements were carried out on selected dry-electrode materials such as silver, stainless steel, AgCl (dry), polyurethane and iron (Fe). These presented, |Zse| values between 500 kΩ and 1 MΩ within the main ECG frequency range (1 Hz – 100 Hz), under no sweat conditions, and values of few kΩ under artificial sweat conditions. However, in spite of the sweat conditions, open bandwidth ECG traces were of similar quality and stability, within tolerance; with dry AgCl electrode material presenting the best ECG trace performance.

AB - The use of wearable dry sensors for long term recordings of electrocardiographic bipolar leads located in comfortable areas of the body, is a requirement for detecting certain heart rhythms. Knowledge of the skin-electrode electrical performance of dry electrodes is necessary when seeking to improve various processing stages for signal quality enhancement. In this paper, methods for the assessment of skin-electrode impedance (Zse) of dry electrodes and its modelling are presented. We need to know the behavior of dry electrodes when they are moistened with skin sweat, either at the time of exercise or when it comes to warm climates, under the following posed hypothesis: the impedance magnitude of dry electrodes under study would be significantly lower after they have been moistened with sweat, and comparatively could reach levels of impedance characteristics presented by standard pre-gelled ECG electrodes. Measurements were carried out on selected dry-electrode materials such as silver, stainless steel, AgCl (dry), polyurethane and iron (Fe). These presented, |Zse| values between 500 kΩ and 1 MΩ within the main ECG frequency range (1 Hz – 100 Hz), under no sweat conditions, and values of few kΩ under artificial sweat conditions. However, in spite of the sweat conditions, open bandwidth ECG traces were of similar quality and stability, within tolerance; with dry AgCl electrode material presenting the best ECG trace performance.

KW - Dry electrodes

KW - moistened skin-electrode impedance

KW - spectroscopy

KW - effect of sweat

KW - arm ECG

KW - wearable monitoring devices

KW - heart rhythm

UR - https://link.springer.com/chapter/10.1007/978-981-10-9023-3_157

M3 - Chapter

SN - 978-981-10-9022-6

VL - 68/3

SP - 871

EP - 875

BT - IFMBE Proceedings

CY - Singapore

ER -

Bosnjak A, Escalona OJ. Practical performance assessment of dry electrodes under skin moisture for wearable long-term cardiac rhythm monitoring systems. In IFMBE Proceedings: World Congress on Medical Physics and Biomedical Engineering. Vol. 68/3. Singapore. 2018. p. 871 - 875. 627