ECG leads achieved an SNRbase of 6.00 ±3.04 dB during quiet breathing, demonstrating their potential for monitoring respiratory muscle activity without compromising cardiac signals.
Do standard ECG leads provide adequate signal-to-noise ratios for monitoring respiratory surface EMG compared to dedicated chest electrodes in healthy subjects?
Standard ECG leads can be repurposed to monitor respiratory muscle activity, with performance enhanced by adding a single respiratory sEMG electrode, facilitating integrated cardiopulmonary monitoring.
Effect estimate: null (95% CI null)
p-value: p=<0.05
Surface electromyography (sEMG) offers potential for analyzing patient-ventilator interactions and respiratory effort. Despite promising in monitoring respiration, it is not clinically established, unlike electrocardiography (ECG), which shares the same physiological principle for cardiac monitoring. This study investigates ECG leads for respiratory monitoring in 20 subjects performing quiet and resistance breathing. Performance was quantified by signal-to-noise ratios between inspiratory activity and (1) baseline noise and (2) expiratory activity. ECG leads were suitable for monitoring respiration, with performance enhanced by combining ECG electrodes with sEMG electrodes. The findings support integrating respiratory sEMG into clinical practice using ECG electrodes without compromising cardiac monitoring.
Oltmann et al. (2025) studied Respiratory muscle activity measurement (n=20). ECG leads for measuring respiratory sEMG vs. Standard electrode leads was evaluated on Signal-to-noise ratio (SNR) for inspiratory activity and baseline noise (null, 95% CI null, p=<0.05). ECG leads achieved an SNRbase of 6.00 ±3.04 dB during quiet breathing, demonstrating their potential for monitoring respiratory muscle activity without compromising cardiac signals.