A novel multi-wavelength procedure for Systolic blood pressure estimation using Opto-Physiological sensor at peripheral arteries and capillaries.pdf (1.35 MB)
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A novel multi-wavelength procedure for blood pressure estimation using opto-physiological sensor at peripheral arteries and capillaries

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conference contribution
posted on 11.06.2018, 14:46 by Francesco Scardulla, Sijung HuSijung Hu, Leonardo D'Acquisto, Salvatore Pasta, Laura BarrettLaura Barrett, Panos Blanos, Liangwen Yan
© 2018 SPIE. In this study, the Carelight multi-wavelength opto-electronic patch sensor (OEPS) was adopted to assess the effectiveness of a new approach for estimating the systolic blood pressure (SBP) through the changes in the morphology of the OEPS signal. Specifically, the SBP was estimated by changing the pressure exerted on an inflatable cuff placed around the left upper arm. Pressure acquisitions were performed both with gold standard (i.e. electronic sphygmomanometer), and Carelight sensor (experimental procedure), on subjects from a multiethnic cohort (aged 28 ± 7). The OEPS sensor was applied together with a manual inflatable cuff, going slightly above the level of the SBP with increases of +10mmHg and subsequently deflated by 10mmHg until reaching full deflation. The OEPS signals were captured using four wavelength illumination sources (i.e., green 525 nm, orange 595 nm, red 650 nm and IR 870 nm) on three different measuring sites, namely forefinger, radial artery and wrist. The implemented algorithm provides information on the instant when the SBP was reached and the signal is lost since the vessel is completely blocked. Similarly, it detected the signal resumption when the external pressure dropped below the SBP. The findings demonstrated a good correlation between the variation of the pressure and the corresponding OEPS signal with the most accurate result achieved in the fingertip among all wavelengths, with a temporal identification error of 8.07 %. Further studies will improve the clinical relevance on a cohort of patients diagnosed with hyper- or hypotension, in order to develop a wearable blood-pressure device.



  • Sport, Exercise and Health Sciences

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Progress in Biomedical Optics and Imaging - Proceedings of SPIE




SCARDULLA, F. ...et al., 2018. A novel multi-wavelength procedure for blood pressure estimation using opto-physiological sensor at peripheral arteries and capillaries. Proceedings of SPIE: Progress in Biomedical Optics and Imaging XI; 1048614.


© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).


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