Key result
Silicon-dioxide-coated capacitive electrodes yield optimal ambulatory ECG signals even during simulated sweating.
May facilitate ambulatory ECG in challenging conditions; leaves open clinical validation before routine use.
This paper presents a silicon-dioxide-coated capacitive electrode system for an ambulatory electrocardiogram (ECG). The electrode was coated with a nano-leveled (287 nm) silicon dioxide layer which has a very high resistance of over 200 MΩ. Due to this high resistance, the electrode can be defined as only a capacitor without a resistive characteristic. This distinct capacitive characteristic of the electrode brings a simplified circuit analysis to achieve the development of a high-quality ambulatory ECG system. The 240 um thickness electrode was composed of a stainless-steel sheet layer for sensing, a polyimide electrical insulation layer, and a copper sheet connected with the ground to block any electrical noises generated from the back side of the structure. Six different diameter electrodes were prepared to optimize ECG signals in ambulatory environment, such as the amplitude of the QRS complex, amplitude of electromagnetic interference (EMI), and baseline wandering of the ECG signals. By combining the experimental results, optimal ambulatory ECG signals were obtained with electrodes that have a diameter from 1 to 3 cm. Moreover, we achieved high-quality ECG signals in a sweating simulation environment with 2 cm electrodes.
No takes yet. Share an insight, caveat, or question.
Kang et al. (2022) studied Ambulatory ECG measurement. Silicon-dioxide-coated capacitive electrode was evaluated on Optimization of ECG signals (amplitude of QRS complex, amplitude of EMI, and baseline wandering). Optimal ambulatory ECG signals were obtained using silicon-dioxide-coated capacitive electrodes with a diameter of 1 to 3 cm, including high-quality signals in a sweating simulation environment.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: