Towards a Broadly Configurable Wearable Device for Continuous Hemodynamic Monitoring

Hemodynamic signals, such as Electrocardiogram (ECG), Photoplethysmography (PPG), and Electrical Bioimpedance (EBI), provide a myriad of critical health indicators. For instance, ECG is utilized by cardiologists to diagnose a range of cardiovascular diseases, PPG estimates blood oxygen levels, and EBI gauges vascular flow. A multimodal device capable of continuously monitoring these signals can furnish healthcare professionals with profound insights into patient well-being. This paper introduces a hardware design for a programmable, wearable device that measures multiple physiological signals, including ECG, PPG, and EBI. Equipped with an onboard microprocessor, the device enables real-time data processing. Compact and efficient, the system measures just 60.5mm by 38.75mm, has low-power dissipation, and is powered by a coin cell battery. Using largely discrete commercial components and a custom electrode array, the open-source hardware allows for rapid configurability and broad usage applications within the health monitoring domain.

Recommended citation: J. Yun, S. Nzama, and S. Shah, “Towards a Broadly Configurable Wearable Device for Continuous Hemodynamic Monitoring,” in 2024 IEEE 67th International Midwest Symposium on Circuits and Systems (MWSCAS), Aug. 2024, pp. 1309–1313, iSSN: 1558-3899. [Online]. Available: https://ieeexplore.ieee.org/document/10658959
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