Key result
The wireless CardioS framework using Ag-NyW textile electrodes yielded ECG signal quality correlated with standard disposable electrodes and maintained acceptable impedance after 6 weeks of use.
Why the study?
A textile-based continuous ECG monitoring system was needed to address the demand for health monitoring applications in resource-constrained environments.
Does the wireless CardioS framework using Ag-NyW dry textile electrodes provide comparable ECG signal quality to standard disposable electrodes in healthy subjects?
Does the wireless CardioS framework using Ag-NyW dry textile electrodes provide comparable ECG signal quality to standard disposable electrodes in healthy subjects?
The wireless CardioS framework using low-cost textile electrodes provides ECG signal quality comparable to standard disposable electrodes, suggesting utility for continuous monitoring in resource-constrained environments.
A first-level textile-based electrocardiogram (ECG) monitoring system referred to as “CardioS” (cardiac sensor) for continuous health monitoring applications is proposed in this study to address the demand for resource-constrained environments. and the signal quality assessment of a wireless CardioS was studied. The CardioS consists of a Lead-I ECG signal recorded wirelessly using silver-plated nylon woven (Ag-NyW) dry textile electrodes to compare the results of wired wearable Ag-NyW textile electrode-based ECG acquisition system and CardioS. The effect of prolonged usage of Ag-NyW dry electrodes on electrode impedance was tested in the current work. In addition, electrode half-cell potential was measured to validate the range of Ag-NyW dry electrodes for ECG signal acquisition. Further, the quality of signals recorded by the proposed wireless CardioS framework was evaluated and compared with clinical disposable (Ag–AgCl Gel) electrodes. The signal quality was assessed in terms of mean magnitude coherence spectra, signal cross-correlation, signal-to-noise-band ratio (Sband/Nband), crest factor, low and high band powers and power spectral density. The experimental results showed that the impedance was increased by 2.5–54.6% after six weeks of continuous usage. This increased impedance was less than 1 MΩ/cm2, as reported in the literature. The half-cell potential of the Ag-NyW textile electrode obtained was 80 mV, sufficient to acquire the ECG signal from the human body. All the fidelity parameters measured by Ag-NyW textile electrodes were correlated with standard disposable electrodes. The cardiologists validated all the measurements and confirmed that the proposed framework exhibited good performance for ECG signal acquisition from the five healthy subjects. As a result of its low-cost architecture, the proposed CardioS framework can be used in resource-constrained environments for ECG monitoring.
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Sriraam et al. (2023) studied Healthy (n=5). Wireless CardioS framework (Ag-NyW dry textile electrodes) vs. Clinical disposable (Ag-AgCl Gel) electrodes was evaluated on Signal quality and electrode impedance. The wireless CardioS framework using Ag-NyW textile electrodes yielded ECG signal quality correlated with standard disposable electrodes and maintained acceptable impedance after 6 weeks of use.
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