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Evaluation of pulse transit time for different sensing methodologies of arterial waveforms.

Janjua, Ghalib Muhammad Waqas; Finlay, Dewar; Guldenring, Daniel; Haq, Atta Ul; McLaughlin, James


Dewar Finlay

Daniel Guldenring

Atta Ul Haq

James McLaughlin


We perform a novel comparative analysis between optically and mechanically derived pulse transit time (PTT), which is a universally employed technique for cuffless blood pressure (BP) estimation. Two inline photoplethysmogram (PPG) sensors were placed at the distal and proximal phalanxes of the index finger, and two finger ballistocardiogram (BPP) sensors were wrapped on top of the PPG sensors fixture around the phalanxes of the index finger. The stacking of the BPP sensor over the PPG sensor provided vertical spatial alignment for same location acquisition of the blood flow waveform through the radial artery. The analysis of variance (ANOVA) between PTT derived from the PPG and BPP sensors resulted in a statistically significant difference at p < 0.05. The PTT derived from the BPP sensors showed higher values (17.8 milliseconds on average) than the PTT derived from the PPG sensors. Higher accuracy PTT values will improve the estimation of cuffless BP and thus has the potential to revolutionize the technology.


JANJUA, G.M.W., FINLAY, D., GULDENRING, D., HAQ, A.U. and MCLAUGHLIN, J. 2023. Evaluation of pulse transit time for different sensing methodologies of arterial waveforms. IEEE access [online], 11, pages 33928-33933. Available from:

Journal Article Type Article
Acceptance Date Jan 21, 2023
Online Publication Date Apr 3, 2023
Publication Date Dec 31, 2023
Deposit Date Apr 5, 2023
Publicly Available Date Apr 7, 2023
Journal IEEE access
Electronic ISSN 2169-3536
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 11
Pages 33928-33933
Keywords Sensors; Arteries; Blood pressure; Blood flow; Photoplethysmography; Analysis of variance; Piezoelectric transducers; Pulse transit time; Photoplethysmogram; Finger ballistocardiograms; Pulse arrival time; Cuff-less blood pressure
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