Quantitative Assessment of Vessel Stasis and Early Warning of Cardiovascular and Cerebrovascular Risks Using Wearable PPG Signals — An Integrated Traditional Chinese and Western Medicine Approach for Preventive Medicine

Abstract Cardiovascular and cerebrovascular diseases have become a major global public health problem, and early warning is critical to reducing disease burden. Traditional risk assessment methods mostly rely on invasive or centralized examinations such as blood testing and medical imaging, which make long-term, continuous, daily monitoring difficult. In traditional Chinese medicine (TCM), vessel stasis is recognized as one of the core pathogenesis underlying cardiovascular and cerebrovascular diseases. However, objective, quantifiable, and wearable assessment of vessel stasis has long lacked a feasible solution.