Key result
Modifying ECG electrode positions up to 6cm from the standard Einthoven triangle allows signal acquisition from the torso or back without significant distortion.
Why the study?
Mislocation of ECG electrodes on the torso in wearable devices can alter signals and lead to diagnostic errors, requiring identification of electrode placements that reduce distortion.
Does modifying ECG electrode location up to 6cm from the standard Einthoven model affect signal distortion in wearable monitoring?
Does modifying ECG electrode location up to 6cm from the standard Einthoven model affect signal distortion in wearable monitoring?
For wearable ECG monitoring, electrodes can be displaced up to 6cm from standard locations on the torso or back without significant signal distortion.
Answers are grounded in this paper and cite their sources.
May support flexible wearable ECG placement; hypothesis-generating and requires prospective validation before adoption.
Wearable vital signs monitoring and specially the electrocardiogram have taken important role due to the information that provide about high-risk diseases, it has been evidenced by the needed to increase the health service coverage in home care as has been encouraged by WHO. Some wearables devices have been developed to monitor the ECG in which the location of the measurement electrodes is modified respect to the Einthoven model. However, mislocation of the electrodes on the torso can lead to the modification of acquired signals, diagnostic mistakes and misinterpretation of the information in the signal. This work presents a volume conductor evaluation and an ECG signal waveform comparison when the location of electrodes is changed, to find a electrodes’ location that reduces distortion of interest signals. In addition, effect of motion artifacts and electrodes’ location on the signal acquisition are evaluated. A group of volunteers was recorded to obtain ECG signals, the result was compared with a computational model of the heart behavior through the EA ECG, DTW and SNR methods to quantitatively determine the signal distortion. It was found that while the Einthoven method is followed, it is possible to acquire the ECG signal from the patient’s torso or back without a significant difference, and the electrodes position can be moved 6cm at most from the suggested location by the Einthoven triangle in Mason-Likar’s method.
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Castaño et al. (2021) studied ECG monitoring. Modified ECG electrode location vs. Standard Einthoven model was evaluated on ECG signal distortion. Modifying ECG electrode positions up to 6cm from the standard Einthoven triangle allows signal acquisition from the torso or back without significant distortion.
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