Why the study?
Continuous wearable photoplethysmography-based blood pressure monitoring is limited by the frequent absence of the dicrotic notch in wrist- and finger-PPG data.
Does the RingBP smart ring provide accurate continuous arterial blood pressure monitoring compared to other solutions?
Does the RingBP smart ring provide accurate continuous arterial blood pressure monitoring compared to other solutions?
A novel smart ring utilizing a morphology-independent algorithm based on the Frank-Starling law enables continuous and comfortable blood pressure monitoring, overcoming the common issue of missing dicrotic notches in PPG data.
High rates of absent dicrotic notch in wrist-PPG may limit wearable ABP reliability; leaves open morphology-robust algorithm development.
The utilization of wearable devices with integrated photoplethysmography (PPG) sensors for continuous and comfortable Arterial Blood Pressure (ABP) monitoring has gained popularity. However, our analysis on a large-scale self-collected dataset reveals a significant challenge: approximately 56.7% of individuals experience the absence of the dicrotic notch (a vital morphology feature) in wrist-PPG data, while 23.8% face the same issue in finger-PPG data, which poses a big obstacle to generalized ABP monitoring. To address this challenge, we propose a morphology-independent ABP estimation algorithm based on the Frank-Starling law. We also devise techniques to address calibration and PPG data drift issues commonly faced in continuous ABP monitoring. Further, a system called RingBP is developed towards continuous, comfortable, and generalized ABP monitoring using a smart ring. We design and implement a smart ring prototype and conduct extensive experiments involving 85 participants, demonstrating its superiority over other solutions.
No takes yet. Share an insight, caveat, or question.
Zhu et al. (2025) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: