The flexible multimodal pulse sensor accurately estimated blood pressure, achieving mean errors of -0.03 ± 5.56 mmHg for systolic and 0.12 ± 3.91 mmHg for diastolic blood pressure.
Does a flexible multimodal pulse sensor improve the accuracy of continuous blood pressure estimation compared to standard PPG-based methods?
A novel flexible multimodal pulse sensor integrating pulse wave, skin temperature, and wearing pressure measurements provides highly accurate, continuous blood pressure estimation meeting AAMI standards.
Effect estimate: SBP error -0.03 ± 5.56 mmHg; DBP error 0.12 ± 3.91 mmHg
= 0.999), low hysteresis (2.45%), fast response (88 ms), and good durability and stability, thereby enabling accurate pulse measurement with high fidelity. The pulse sensor also monolithically integrated the simultaneous detections of skin temperature and wearing pressure for resisting artifact effects in pulse measurements. Through the fusion of multiple features extracted from the pulse waveform, wearing pressure, skin temperature and user's personal physical characteristics using an efficient multilayer perceptron, blood pressure is accurately estimated and good generalizability is achieved.
Tian et al. (2024) studied Blood pressure monitoring (n=18). Flexible multimodal pulse sensor vs. Commercial cuff-based blood pressure monitor was evaluated on Blood pressure estimation error (Mean Error ± Standard Deviation) (SBP error -0.03 ± 5.56 mmHg; DBP error 0.12 ± 3.91 mmHg). The flexible multimodal pulse sensor accurately estimated blood pressure, achieving mean errors of -0.03 ± 5.56 mmHg for systolic and 0.12 ± 3.91 mmHg for diastolic blood pressure.
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