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Cited by 11Non-Invasive Vital Sign MonitoringCardiovascular Health and Disease PreventionHemodynamic Monitoring and Therapy

Photoplethysmography system for blood pulsation detection in unloaded artery conditions

Grabovskis, A., Marcinkevics, Z., Rubenis, O., Rubins, U., Lusa, V.·2012·SPIE Proceedings
DOI 10.1117/12.922649
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Abstract

Photoplethysmography (PPG) is an optical method of blood pulsation recording and has been extensively studied for decades. Recently PPG is widely used in the medical equipment for patient monitoring and in laboratories for research and physiological studies. In spite of the technological progress in the field of medical equipment, there are no generally accepted standards for clinical PPG measurements up to date. One of the most important factors affecting PPG waveform is the contact pressure between tissue and PPG probe. The aim of the current study was to develop and evaluate a system for software-assisted PPG signal acquisition from the unloaded artery. Novel PPG waveform derived Optimal Pressure Parameter (OPP) has been proposed as the reliable indicator of unloaded artery condition. We affirm that PPG measurements provided in balanced transmural arterial pressure conditions might serve as a reference for the unification of contact manner optical plethysmography methods. It is a step forward towards the standardization of the PPG methodology, and showed that the maximal value of the OPP, obtained in the particular experimental trial, indicates the optimal PPG probe contact pressure at that moment. Our developed system has been validated in the experimental series and showed the possibility of determining the correct PPG contact pressure value with high repeatability. It is concluded that this system can provide the necessary feedback to perform reliable PPG signal acquisition from the unloaded conduit artery.

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Crossref · 10.1117/12.922649

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  • With an applied pressure range of 0-15 kPa, there was a variation of over 300 percent in the b/a ratio; when an optimal pressure was reached, the variation coefficient dropped to less than 5 percent.

    “Grabovskis et al. reported with an applied pressure range of 0–15 kPa, there was a variation of over 300 percent in the b/a ratio [209]. When an optimal pressure was reached, the variation coefficient dropped to less than 5 percent.”

    From Sources of inaccuracy in photoplethysmography for continuous cardiovascular monitoring (2021) · cites this paper as [209]

  • Grabovskis et al. reported a less than 3% coefficient of variation within a subject at the single measurement site when determining the optimal pressure needed to determine an unloaded artery.

    “Grabovskis et al. reported a less than 3% coefficient of variation within a subject at the single measurement site when determining the optimal pressure needed to determine an unloaded artery.”

    From Sources of inaccuracy in photoplethysmography for continuous cardiovascular monitoring (2021) · cites this paper as [209]

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Authors
Grabovskis, A., Marcinkevics, Z., Rubenis, O., Rubins, U., & Lusa, V.
Affiliations
University of Latvia (LV)
ORCID
Venue
SPIE Proceedings
Publisher
SPIE
Published
2012-06-01
Volume
8427
Pages
84270L
ISSN
0277-786X (ISSN-L)
DOI
10.1117/12.922649
OpenAlex
W2077564187
Cited by
11
References
15
Citations by year
2021: 2 · 2019: 2 · 2015: 1 · 2014: 3 · 2013: 2 · 2012: 1
FWCI
4.81
Type
conference paper
Language
en
Open access
closed
Locations
Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Health Sciences › Medicine › Surgery › Hemodynamic Monitoring and Therapy
Keywords
photoplethysmography

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