Comparison of regional variability in multi-site photoplethysmographic pulse wave characteristics

J. Allen, A. Murray

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

9 Citations (Scopus)

Abstract

The characteristics of the photoplethysmography (PPG) pulse signal depend upon where they are made; with pulses from the various peripheral sites showing differences in amplitude and transit time, and variation of each over time. By studying the pulses obtained simultaneously from 6 peripheral sites (right and left ears, thumbs, and toes), the bilateral and segmental characteristics should allow important information about the peripheral circulation to be extracted. A multisite photoplethysmography pulse measurement and analysis system is described which includes a MATLAB-based suite of signal processing algorithms for analysis of the waveforms on a beat-to-beat basis. Multi-site pulse waveforms were collected from 20 normal subjects whilst they performed a slow paced breathing exercise at 1 breath every 10 s for 300 s. In this study the PPG pulse waveform characteristics at the 3 segmental levels (right and left ears, thumbs, and toes) were assessed using two types of analysis: (i) pulse amplitude and its variability, and (ii) pulse transit time and its variability. The mean calibrated pulse amplitudes were (in arbitrary units); ears (0.023), thumbs (0.043), and toes (0.013), with coefficients of variability; ears and thumbs 14%, and toes 20%. A significant difference in pulse transit time of 4 ms between the right and left toes was detected. The mean overall pulse transit times were; ears (0.133 s), thumbs (0.199 s), and toes (0.302 s), with coefficients of variability; ears 2.6%, thumbs 1.9%, and toes 2.1%. In the study we utilized signal processing algorithms to calculate on a beat-to-beat basis measures of pulsatility and determine a set of normative data for our multi-site pulse system.
Original languageEnglish
Title of host publication2000 First International Conference Advances in Medical Signal and Information Processing
PublisherIEEE
Pages26-31
Number of pages6
Edition476
ISBN (Print)0-85296-728-4
DOIs
Publication statusPublished - 2000
Externally publishedYes
EventFirst International Conference Advances in Medical Signal and Information Processing - Bristol, United Kingdom
Duration: 4 Sep 20006 Sep 2000

Publication series

NameIEE Conference Publication
PublisherInstitution of Engineering and Technology
ISSN (Print)0537-9989

Conference

ConferenceFirst International Conference Advances in Medical Signal and Information Processing
CountryUnited Kingdom
CityBristol
Period4/09/006/09/00

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  • Cite this

    Allen, J., & Murray, A. (2000). Comparison of regional variability in multi-site photoplethysmographic pulse wave characteristics. In 2000 First International Conference Advances in Medical Signal and Information Processing (476 ed., pp. 26-31). (IEE Conference Publication). IEEE. https://doi.org/10.1049/cp:20000313