AbstractWearable devices for continuous monitoring of arterial pulse waves have the potential to improve the diagnosis, prognosis, andmanagement of cardiovascular diseases. These pulse wave signals are often affected by the contact pressure between the wearable device and the skin, limiting the accuracy and reliability of hemodynamic parameter quantification. Here, a continuous hemodynamic monitoring device thatenables the simultaneous recording of dualchannel bioimpedance and quantification of pulse wave velocity (PWV) and blood pressure (BP) is reported. The investigations demonstrate the effect of contact pressure on bioimpedance and PWV. The pulsatile bioimpedance magnitude reached its maximum when the contact pressure approximated the mean arterial pressure of the subject. PWV is employed to continuously quantify BP while maintaining comfortable contact pressure for prolonged wear. The mean absolute error and standard deviation of the error compared to the reference value are determined to be 0.13.3mmHg for systolic BP, 1.33.7mmHg for diastolic BP, and 0.43.0mmHg for mean arterial pressure when measurements are conducted in the lying down position. This research demonstrates the potential of wearable dualbioimpedance sensors with contact pressure guidance for reliable and continuous hemodynamic monitoring.
