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ECG Monitoring Garment Using Conductive Carbon Paste for Reduced Motion Artifacts.

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This study introduces a new wearable ECG monitoring garment using conductive carbon-based paste electrodes. These flexible electrodes offer low contact impedance and stable electrocardiogram (ECG) signal measurement during physical activity.

Keywords:
electrocardiogramgarmentgraphite pastewearable

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Area of Science:

  • Biomedical Engineering
  • Wearable Technology
  • Cardiovascular Monitoring

Background:

  • Continuous electrocardiogram (ECG) monitoring is crucial for early detection of heart diseases.
  • Wearable ECG devices often face challenges with motion artifacts due to high electrode-to-skin contact impedance.
  • Existing dry electrodes can compromise signal quality because of poor skin contact.

Purpose of the Study:

  • To develop a novel wearable ECG monitoring garment utilizing conductive carbon-based paste electrodes.
  • To address the issue of motion artifacts in wearable ECG monitoring by reducing contact impedance.
  • To evaluate the performance and stability of the proposed electrode system during physical activity.

Main Methods:

  • A conductive carbon-based paste was developed and applied directly to the skin, forming a flexible, detachable patch electrode after drying.
  • Contact impedance measurements were performed on a skin replica and compared to traditional Ag/AgCl electrodes.
  • ECG signals were recorded using the custom garment and electrodes during various physical activities, including walking and running.

Main Results:

  • The carbon-based paste achieved near 100% skin contact area, ensuring conformal coverage.
  • The developed patch electrodes exhibited significantly lower contact impedance (70.0 kΩ at <10 Hz) compared to Ag/AgCl electrodes (118.7 kΩ).
  • Stable and high-quality ECG signals were acquired even during dynamic movements like walking and running, demonstrating robustness against motion artifacts.

Conclusions:

  • The proposed wearable ECG monitoring garment with conductive carbon-based paste electrodes effectively reduces contact impedance and minimizes motion artifacts.
  • This technology offers a promising solution for reliable, long-term, and comfortable ambulatory ECG monitoring.
  • The findings support the potential of this innovative approach for improved pre-detection of cardiac conditions through wearable technology.