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Non-Contact Monitoring of ECG in the Home Environment—Selecting Optimal Electrode Configuration

Abstract

Capacitive electrocardiography (cECG) is most often used in wearable or embedded measurement systems. The latter is considered in the paper. An optimal electrocardiographic lead, as an individual feature, was determined based on model studies. It was defined as the possibly highest value of the R-wave amplitude measured on the back of the examined person. The lead configuration was also analyzed in terms of minimizing its susceptibility to creating motion artifacts. It was found that the direction of the optimal lead coincides with the electrical axis of the heart. Moreover, the electrodes should be placed in the areas preserving the greatest voltage and at the same time characterized by the lowest gradient of the potential. Experimental studies were conducted using the developed measurement system on a group of 14 people. The ratio of the R-wave amplitude (as measured on the back and chest, using optimal leads) was less than 1 while the SNR reached at least 20 dB. These parameters allowed for high-quality QRS complex detection with a PPV of 97%. For the “worst” configurations of the leads, the signals measured were practically uninterpretable.

Citations

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Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
SENSORS no. 22,
ISSN: 1424-8220
Language:
English
Publication year:
2022
Bibliographic description:
Bujnowski A., Osiński K., Przystup P., Wtorek J.: Non-Contact Monitoring of ECG in the Home Environment—Selecting Optimal Electrode Configuration// SENSORS -Vol. 22,iss. 23 (2022), s.9475-
DOI:
Digital Object Identifier (open in new tab) 10.3390/s22239475
Sources of funding:
  • Statutory activity/subsidy
Verified by:
Gdańsk University of Technology

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