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Insight into the dicrotic notch in photoplethysmographic pulses from the finger tip of young adults

journal contribution
posted on 04.08.2016, 10:14 authored by Ping Shi, Sijung HuSijung Hu, Jia Zheng, Yihong Qiu, Peck-Yeng (Sharon) Cheang
This study aims to investigate arterial stiffness in selected young adults by non-invasively determining the characteristics of the photoplethysmographic dicrotic notch. A total of 15 volunteers participated in this study, divided into four groups by age and gender. Contour analysis was applied to analyse the photoplethysmographic dicrotic notch, including time-related and height-related parameters. The height of reflected wave, mirrored by the notch relative amplitude (NRA), was found to be significantly larger in the older group compared to the younger group (p = 0.016). The timing of the reflected wave, measured by three parameters, i.e. notch index (NI), notch latency (NL) and peak-to-notch latency (PTNL), significantly increased in the female group compared to the male group (all p < 0.02). The results confirm that arterial stiffness occurs in young adults, and demonstrate that a difference of arterial stiffness exists between young male and female. This study indicates that examining the characteristic notch of the PPG pulse could help in identifying differences of vascular activities.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Journal of Medical Engineering & Technology

Volume

31

Issue

(8)

Pages

. 628 - 633

Citation

SHI, P. ... et al., 2009. Insight into the dicrotic notch in photoplethysmographic pulses from the finger tip of young adults. Journal of Medical Engineering and Technology, 31 (8), pp.628-633.

Publisher

© Informa UK

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2009

Notes

Closed access.

ISSN

0309-1902

eISSN

1464-522X

Language

en