P3.6 EVALUATION OF DIFFERENT METHODS FOR DETERMINING THE TIME DELAY OF THE ARTERIAL PULSE WAVE: APPLICATION TO THE POPMETRE ®

DOI

10.1016/j.artres.2015.10.231How to use a DOI?

Abstract

Objective: Pulse Wave Velocity (PWV) can be measured between different sites. Here we used two different aspects to assess the PWV; the standard method Carotid-Femoral (CF) Sphygmocor (AtCorMedical – Australia) and the pOpmetre ^® (Axelife SAS – France) which uses the Finger to Toe (FT) signals. The aim of this study was to evaluate the agreement between FT-PWV and CF-PWV and to test the robustness of pOpmetre ^® build-in algorithm.

Design and method: CF and FT PWV was measured in 150 subjects. MatLab was used to calculate FT-PWV from pOpmetre ^® waveforms using four methods: maximum of second derivative (used by pOpmetre ^®), intersecting tangents, 10% threshold and the cross correlation method.

Results: Using built in algorithms, the comparisons of the PWVs and transit times showed a good agreement between the two methods. FT-PWV correlated with CF-PWV (r²=0.51; p<0.001) and transit time (r²=0.62; p<0.001). The best correlation between FT and CF was observed with the maximum of the second derivative algorithm (PWV: r²=0.56; p<0.001), transit time (r²=0.61; p<0.001). Other algorithms showed weaker correlations: for PWV, intersecting tangents, r²=0.37, 10% upstroke, r²=0.35, cross-correlation, r²=0.22.

Conclusions: This study showed that pOpmetre ^® is well correlated with reference methods and the wave foot detection algorithm used by popmetre ^® gave the best correlation comparing to other algorithms. The FT-PWV technique has correct agreement with the reference technique, however further studies are needed to validate FT-PWV method in larger populations. Compared to CF-PWV, FT-PWV is faster, simpler to perform and more acceptable to patients.

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TY  - JOUR
AU  - Hasan Obeid*
AU  - Hakim Khettab
AU  - Magid Hallab
AU  - Pierre Boutouyrie
AU  - Stéphane Laurent
PY  - 2015
DA  - 2015/11/23
TI  - P3.6 EVALUATION OF DIFFERENT METHODS FOR DETERMINING THE TIME DELAY OF THE ARTERIAL PULSE WAVE: APPLICATION TO THE POPMETRE ®
JO  - Artery Research
SP  - 12
EP  - 12
VL  - 12
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2015.10.231
DO  - 10.1016/j.artres.2015.10.231
ID  - Obeid*2015
ER  -