A Wearable Patch for Remote Monitoring of Cardiac Electromechanical function

Electrocardiography (ECG) patches are widely used for the remote monitoring of patients with chronic cardiac conditions. While ECG captures the heart's electrical activity, seismocardiography (SCG) provides insights into<br/>its mechanical function. We have developed a wearable system that combines ECG and SCG in a single patch for remote monitoring.<br/>Methods: The system consists of a small, lightweight and wearable sensor embedded in a medical patch positioned on the sternum. The sensor integrates a 3-axis accelerometer for SCG and single-lead ECG.<br/>Results: Device testing confirmed reliable acquisition of 27-second ECG and SCG recordings every 30 minutes over a period of 30 days without requiring a battery<br/>recharge or replacement. In a pilot test of the system involving 3 subjects over a 48-hour period, configured for 30-minute recording intervals, a total of 255 recordings were obtained out of the expected 288 (88.5%) recording<br/>coverage. In addition, the system was tested over 28 days on one subject resulting in 808 out of 1344 (60.12%) acquired measurements. It is argued why a coverage of 88.69% could be expected.<br/>Conclusion: The system enables long-term, remote, and continuous monitoring of cardiac electromechanical function using a combined ECG and SCG patch.