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Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor

Fiber Bragg grating (FBG) sensors fabricated in silica optical fiber (Silica-FBG) have been used to measure the strain of human arteries as pulse wave signals. A variety of vital signs including blood pressure can be derived from these signals. However, silica optical fiber presents a safety risk be...

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Autores principales: Haseda, Yuki, Bonefacino, Julien, Tam, Hwa-Yaw, Chino, Shun, Koyama, Shouhei, Ishizawa, Hiroaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6928766/
https://www.ncbi.nlm.nih.gov/pubmed/31766391
http://dx.doi.org/10.3390/s19235088
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author Haseda, Yuki
Bonefacino, Julien
Tam, Hwa-Yaw
Chino, Shun
Koyama, Shouhei
Ishizawa, Hiroaki
author_facet Haseda, Yuki
Bonefacino, Julien
Tam, Hwa-Yaw
Chino, Shun
Koyama, Shouhei
Ishizawa, Hiroaki
author_sort Haseda, Yuki
collection PubMed
description Fiber Bragg grating (FBG) sensors fabricated in silica optical fiber (Silica-FBG) have been used to measure the strain of human arteries as pulse wave signals. A variety of vital signs including blood pressure can be derived from these signals. However, silica optical fiber presents a safety risk because it is easily fractured. In this research, an FBG sensor fabricated in plastic optical fiber (POF-FBG) was employed to resolve this problem. Pulse wave signals were measured by POF-FBG and silica-FBG sensors for four subjects. After signal processing, a calibration curve was constructed by partial least squares regression, then blood pressure was calculated from the calibration curve. As a result, the POF-FBG sensor could measure the pulse wave signals with an signal to noise (SN) ratio at least eight times higher than the silica-FBG sensor. Further, the measured signals were substantially similar to those of an acceleration plethysmograph (APG). Blood pressure is measured with low error, but the POF-FBG APG correlation is distributed from 0.54 to 0.72, which is not as high as desired. Based on these results, pulse wave signals should be measured under a wide range of reference blood pressures to confirm the reliability of blood pressure measurement uses POF-FBG sensors.
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spelling pubmed-69287662019-12-26 Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor Haseda, Yuki Bonefacino, Julien Tam, Hwa-Yaw Chino, Shun Koyama, Shouhei Ishizawa, Hiroaki Sensors (Basel) Article Fiber Bragg grating (FBG) sensors fabricated in silica optical fiber (Silica-FBG) have been used to measure the strain of human arteries as pulse wave signals. A variety of vital signs including blood pressure can be derived from these signals. However, silica optical fiber presents a safety risk because it is easily fractured. In this research, an FBG sensor fabricated in plastic optical fiber (POF-FBG) was employed to resolve this problem. Pulse wave signals were measured by POF-FBG and silica-FBG sensors for four subjects. After signal processing, a calibration curve was constructed by partial least squares regression, then blood pressure was calculated from the calibration curve. As a result, the POF-FBG sensor could measure the pulse wave signals with an signal to noise (SN) ratio at least eight times higher than the silica-FBG sensor. Further, the measured signals were substantially similar to those of an acceleration plethysmograph (APG). Blood pressure is measured with low error, but the POF-FBG APG correlation is distributed from 0.54 to 0.72, which is not as high as desired. Based on these results, pulse wave signals should be measured under a wide range of reference blood pressures to confirm the reliability of blood pressure measurement uses POF-FBG sensors. MDPI 2019-11-21 /pmc/articles/PMC6928766/ /pubmed/31766391 http://dx.doi.org/10.3390/s19235088 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Haseda, Yuki
Bonefacino, Julien
Tam, Hwa-Yaw
Chino, Shun
Koyama, Shouhei
Ishizawa, Hiroaki
Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor
title Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor
title_full Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor
title_fullStr Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor
title_full_unstemmed Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor
title_short Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor
title_sort measurement of pulse wave signals and blood pressure by a plastic optical fiber fbg sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6928766/
https://www.ncbi.nlm.nih.gov/pubmed/31766391
http://dx.doi.org/10.3390/s19235088
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