P7 Assessing Vascular Age from Peripheral Pulse Waves: a Study of Existing Indices, and Directions for Future Research

Peter Charlton; Maria Aresu; Jeanette Spear; Phil Chowienczyk; Jordi Alastruey

doi:10.2991/artres.k.191224.042

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Volume 25, Issue Supplement 1, December 2019, Pages S49 - S49

P7 Assessing Vascular Age from Peripheral Pulse Waves: a Study of Existing Indices, and Directions for Future Research

Authors

Peter Charlton¹^{, *}, Maria Aresu², Jeanette Spear², Phil Chowienczyk¹, Jordi Alastruey¹

¹King’s College London, King’s Health Partners, London, UK

²Imperial College London, London, UK

^*Corresponding author. Email: peter.charlton@kcl.ac.uk

Corresponding Author

Peter Charlton

Available Online 15 February 2020.

DOI: 10.2991/artres.k.191224.042 How to use a DOI?
Abstract: Purpose: Vascular age may be a better marker of cardiovascular risk than age. It has been proposed that vascular age could be assessed easily and inexpensively from the photoplethysmogram (PPG) pulse wave, which is measured by pulse oximeters and fitness bands. Our aim was to assess the performance of existing PPG-derived indices and provide directions for future research.

Methods: Two datasets were used. The Airwave dataset [1] contains finger PPG pulse waves alongside brachial-femoral pulse wave velocities (PWVs) from police employees: high quality data from 4,378 subjects aged 20 to 66 were used in this study. The arterial pulse wave database [2] contains simulated PPG pulse waves for 3,837 virtual subjects aged 25 to 75 exhibiting healthy ageing and normal variation in cardiovascular properties. Pulse wave features were derived, and the following indices were assessed: the ageing index (AGI) [3], modified AGI [4], informal AGI [5], and a novel AGI obtained by fitting a linear regression model to the five features most strongly correlated with age.

Results: See Figure 1. Existing indices correlated weakly with age. The new AGI was more strongly correlated with age on both datasets. It was weakly correlated with PWV and BP on Airwave, but strongly correlated with PWV on simulated data.

Conclusion: The improved performance of the new AGI indicates that there is scope for improving PPG-derived indices of vascular ageing. Indices appear to be correlated with age, PWV and BP, indicating that with further research they could be useful markers of cardiovascular risk.
Copyright: © 2019 Association for Research into Arterial Structure and Physiology. Publishing services by Atlantis Press International B.V.
Open Access: This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

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Journal: Artery Research
Volume-Issue: 25 - Supplement 1
Pages: S49 - S49
Publication Date: 2020/02/15
ISSN (Online): 1876-4401
ISSN (Print): 1872-9312
DOI: 10.2991/artres.k.191224.042 How to use a DOI?
Open Access: This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

ris enw bib

TY  - JOUR
AU  - Peter Charlton
AU  - Maria Aresu
AU  - Jeanette Spear
AU  - Phil Chowienczyk
AU  - Jordi Alastruey
PY  - 2020
DA  - 2020/02/15
TI  - P7 Assessing Vascular Age from Peripheral Pulse Waves: a Study of Existing Indices, and Directions for Future Research
JO  - Artery Research
SP  - S49
EP  - S49
VL  - 25
IS  - Supplement 1
SN  - 1876-4401
UR  - https://doi.org/10.2991/artres.k.191224.042
DO  - 10.2991/artres.k.191224.042
ID  - Charlton2020
ER  -

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