Key result
Remote blood pressure estimation using near-infrared wideband LEDs achieved a root mean square error of around 4 mmHg compared to measured mean blood pressure in two of three subjects.
Why the study?
Long-term and continuous blood pressure monitoring in daily life is important, especially for early detection and prevention of hypertension.
Can near-infrared (NIR) wideband LEDs accurately estimate remote blood pressure in human subjects?
Can near-infrared (NIR) wideband LEDs accurately estimate remote blood pressure in human subjects?
Remote blood pressure estimation using near-infrared wideband LEDs shows preliminary feasibility with an error of around 4 mmHg in a very small proof-of-concept study.
May warrant further development of remote BP tools; leaves open reliability and generalizability.
Long-term and continuous blood pressure monitoring in daily life is important, especially for early detection and prevention of hypertension. The near-infrared (NIR) spectral region, which belongs to the middle of the visible and infrared bands, is the wavelength band with high biological permeability and called as a “living-body window”. Our research group developed an NIR wideband LED with a wide emission band in the NIR spectral region and applied the NIR wideband LED in remote blood pressure estimation. The accuracy of remote blood pressure estimation can be improved by using the spatial features of facial images, including multi-wavelength information. In this study, we describe the estimation of remote blood pressure using NIR wideband LEDs. Features in the nasal and lip regions, which contributed to estimating blood pressure, were analyzed using facial NIR images. Furthermore, the root mean square error between the measured and estimated MBP was around 4 mmHg using the NIR wideband LEDs in two of three subjects.
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Oiwa et al. (2021) studied this question. Near-infrared (NIR) wideband LEDs vs. Measured blood pressure was evaluated on Root mean square error between measured and estimated mean blood pressure (MBP). Remote blood pressure estimation using near-infrared wideband LEDs achieved a root mean square error of around 4 mmHg compared to measured mean blood pressure in two of three subjects.
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