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Electrode Systems for Continuous Momtormg in Cardiovascular Surgery

Written By Wednesday, October 19, 2022 Add Comment Edit

Abstract

Purpose

The diagnosis of unexplained syncope and sustained palpitations remains a challenging task for cardiology community. Continuous monitoring of cardiac activity is essential to know the pumping pattern of the heart for patients with mild and severe symptoms. Although attempts have been made towards developing wearable monitoring system, the demand for new system is still open due to affordability and accessibility to resource constrained settings.

Method

This research work proposes a wearable smart jacket with a single lead (Ag-NyW) textile sensor for continuous monitoring of electrocardiogram (ECG) signals. The wearable lead-I textile electrodes are evaluated in terms of visual inspection by the clinician, skin-electrode contact impedance characteristics; fidelity measures such as crest factor, signal band to noise band ratio, mean magnitude squared coherence; and ECG interval characteristics. Experimental study was carried with 212 healthy volunteers after due ethical clearance (age group 18–45 years), and RR variability and heart rate variability were assessed for different age groups and BMI levels.

Results

The study revealed that the proposed textile electrodes are comparable to disposable (conventional Ag/AgCl gel) electrodes in terms of fidelity measures, skin-contact impedance, and ECG interval measures. The HRV for different age groups and BMI levels were found to be within the limits as reported in the literature.

Conclusion

From the current pilot study with Indian population, this cost-effective wearable ECG monitoring system will be helpful for long-term monitoring in resource constrained settings.

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Funding

The authors would acknowledge the Department of Bio-Technology (DBT), India, funding for carrying out this research work (BT/PR14751/MED/32/422/2015).

Author information

Authors and Affiliations

  1. Research Scholar, Center for Medical Electronics and Computing, M.S Ramaiah Institute of Technology, Bangalore, Affiliated to VTU, Belgaum, India

    Srinivasulu Avvaru

  2. Department of Electrical, Electronics and Communication Engineering, GITAM, Bangalore Campus, Bangalore, India

    Srinivasulu Avvaru

  3. Center for Medical Electronics and Computing, M.S Ramaiah Institute of Technology, Bangalore, India

    N. Sriraam

  4. Department of Cardiology, M.S. Ramaiah Medical College and Hospitals, Bangalore, India

    V. S. Prakash & Sarthak Sahoo

Corresponding author

Correspondence to N. Sriraam.

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Ethics approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent forms were obtained from the volunteers before recording their vital signal. The experimental design and performance results were validated and approved by the ethical committee (MSRMC/EC/2016/ 13.01.2016).

Conflict of interest

The authors declare no competing interests.

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Avvaru, S., Sriraam, N., Prakash, V.S. et al. Wearable Ag-NyW textile electrode for continuous ECG monitoring. Res. Biomed. Eng. 37, 231–247 (2021). https://doi.org/10.1007/s42600-021-00147-2

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  • DOI : https://doi.org/10.1007/s42600-021-00147-2

Keywords

  • Smart textiles
  • Silver-plated nylon woven (Ag-NyW) textile electrode
  • Impedance test
  • Electrode placement
  • Autonomous nervous system (ANS)
  • Heart rate variability (HRV)
  • Body mass index (BMI)

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