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• W2946897865 abstract "Abstract We propose a multimodal biosensor for use in continuous blood pressure (BP) monitoring system. Our proposed novel configuration measures photo-plethysmography (PPG) and impedance plethysmography (IPG) signals simultaneously from the subject wrist. The proposed biosensor system enables a fully non-intrusive system that is cuff-less, also utilize a single measurement site for maximum wearability and convenience of the patients. The efficacy of the proposed technique was evaluated on 10 young healthy subjects. Experimental results indicate that the pulse transit time (PTT)-based features calculated from an IPG peak and PPG maximum second derivative (f 14 ) had a relatively high correlation coefficient ( r ) to the reference BP, with −0.81 ± 0.08 and −0.78 ± 0.09 for systolic BP (SBP) and diastolic BP (DBP), respectively. Moreover, here we proposed two BP estimation models that utilize six- and one-point calibration models. The six-point model is based on the PTT, whereas the one-point model is based on the combined PTT and radial impedance (Z). Thus, in both models, we observed an adequate root-mean-square-error estimation performance, with 4.20 ± 1.66 and 2.90 ± 0.90 for SBP and DBP, respectively, with the PTT BP model; and 6.86 ± 1.65 and 6.67 ± 1.75 for SBP and DBP, respectively, with the PTT-Z BP model. This study suggests the possibility of estimating a subject’s BP from only wrist bio-signals. Thus, the six- and one-point PTT-Z calibration models offer adequate performance for practical applications." @default.
• W2946897865 created "2019-06-07" @default.
• W2946897865 creator A5020498091 @default.
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• W2946897865 date "2019-05-28" @default.
• W2946897865 modified "2023-10-12" @default.
• W2946897865 title "Multimodal Wrist Biosensor for Wearable Cuff-less Blood Pressure Monitoring System" @default.
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• W2946897865 doi "https://doi.org/10.1038/s41598-019-44348-3" @default.
• W2946897865 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6538603" @default.
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