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Paperdoi:10.1109/embc.2016.7590776

Photoplethysmography: Towards a non-invasive pressure measurement technique

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Authors: H. Njoum, P.A. Kyriacou

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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TL;DR

There is a need for non-invasive and continuous blood pressure measurements. This study explored the relationship between Photoplethysmography (PPG) and Pressure-Volume (P-V) changes in an in vitro model. To validate the methods, pressure, Red (R) and InfraRed (IR) PPG signals were recorded continuously in an arterial model utilizing a pulsatile pump.

  • Published in 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (2016).

Abstract

There is a need for non-invasive and continuous blood pressure measurements. This study explored the relationship between Photoplethysmography (PPG) and Pressure-Volume (P-V) changes in an in vitro model. We proposed and compared methods for an estimation of the pulsatile volume, termed as Normalized Pulse Volume (NPV) and Adjusted Pulse Volume (APV). To validate the methods, pressure, Red (R) and InfraRed (IR) PPG signals were recorded continuously in an arterial model utilizing a pulsatile pump. Flow rates were controlled by varying pumping frequencies at low and high stroke volumes. It was found that the optimum method for estimation of the pulsatile volume is through APV, which had a high correlation (r2=0.99, pIR (r2=0.73, z=25.85, pR (r2=0.95, z=12.26, p<;0.001). These preliminary findings suggest that APV could be used as a potential non-invasive continuous method of blood pressure measurement.

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Kyriacou BibliographyOther PPG Applications

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Njoum, H., & Kyriacou, P. (2016). Photoplethysmography: Towards a non-invasive pressure measurement technique. 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. https://doi.org/10.1109/embc.2016.7590776
Njoum, H. and P.A. Kyriacou. 2016. "Photoplethysmography: Towards a non-invasive pressure measurement technique." 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. https://doi.org/10.1109/embc.2016.7590776.
Njoum, H. and Kyriacou, P. (2016) 'Photoplethysmography: Towards a non-invasive pressure measurement technique', 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. doi: 10.1109/embc.2016.7590776.
Njoum, H., and P.A. Kyriacou "Photoplethysmography: Towards a non-invasive pressure measurement technique." 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2016. https://doi.org/10.1109/embc.2016.7590776.
H. Njoum and P. Kyriacou, "Photoplethysmography: Towards a non-invasive pressure measurement technique," 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2016, doi: 10.1109/embc.2016.7590776.
@inproceedings{njoum2016photoplethysmography,
  title         = {{Photoplethysmography: Towards a non-invasive pressure measurement technique}},
  author        = {Njoum, H. and Kyriacou, P.A.},
  year          = {2016},
  booktitle     = {2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society},
  doi           = {10.1109/embc.2016.7590776}
}

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