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Insight into the dicrotic notch in photoplethysmographic pulses from the finger tip of young adults
journal contribution
posted on 2016-08-04, 10:14 authored by Ping Shi, Sijung HuSijung Hu, Jia Zheng, Yihong Qiu, Peck-Yeng (Sharon) CheangThis 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 & TechnologyVolume
31Issue
(8)Pages
. 628 - 633Citation
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 UKVersion
- 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
2009Notes
Closed access.ISSN
0309-1902eISSN
1464-522XPublisher version
Language
- en