Triboelectric-induced Pseudo-ICG for cardiovascular risk assessment on flexible electronics

Cardiovascular diseases (CVDs) are prevalent pathologies, whose early detection plays an important role in cardiovascular risk assessment. Long-term, non-invasive heart hemodynamic monitoring allows the evaluation of clinical events, which are difficult to assess in short clinical sessions, and can be successfully performed by impedance cardiography (ICG). Herein, we propose a novel passive device, based on the triboelectric effect caused by the corpuscles flow in bloodstream for the evaluation of a Pseudo-ICG pattern. Results demonstrated that the rate of change in bioimpedance (dZ/dt) can be passively evaluated avoiding standard bioimpedance instruments. Postural and transduction parameters affecting the signal were investigated and compared with data obtained in clinical setting. The device provides a novel monitoring approach opening a promising alternative for continuous and remote risk assessment.