A new statistical phase offset technique for the calculation of in vivo pulse wave velocity

John Runciman; Martine McGregor; Gonçalo Silva; Gabrielle Monteith; Laurent Viel; Luis G. Arroyo

doi:10.1016/j.artres.2015.12.001

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Volume 13, Issue C, March 2016, Pages 17 - 27

A new statistical phase offset technique for the calculation of in vivo pulse wave velocity

Authors

John Runciman^a^{, b}^{, *}, Martine McGregor^a, Gonçalo Silva^b, Gabrielle Monteith^b, Laurent Viel^b, Luis G. Arroyo^b

^aSchool of Engineering, University of Guelph, Guelph, ON, Canada

^bDept. of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada

^*Corresponding author. School of Engineering, University of Guelph, Guelph, ON N1G 1P1, Canada. E-mail address: jruncima@uoguelph.ca (J. Runciman).

Corresponding Author

John Runciman

Received 21 July 2015, Revised 2 December 2015, Accepted 18 December 2015, Available Online 20 January 2016.

DOI: 10.1016/j.artres.2015.12.001 How to use a DOI?
Keywords: Pulmonary artery; Pulse wave velocity; In vivo; Analysis techniques; Equine; Arterial stiffness
Abstract: Pulmonary blood pressure measurements were collected from 5 clinically healthy horses. Pulse wave velocity (PWV) values were calculated using five techniques, four existing (minimum foot-to-foot, F2F; maximum 1st derivative, M1D; maximum 2nd derivative, M2D; and cross correlation, CC) and the new statistical phase offset technique (SPO). The SPO technique was also applied to systolic (SPO-S), diastolic (SPO-D) and full wave (SPO-FW) data. The reliability of each analysis technique was determined using the consistency of calculated PWV values.

Using the original data sets, of variable length (2 ≤ n ≤ 5) due to the effects of respiration, the SPO technique gave the most consistent results (SPO-D, 2.31 ± 0.31 m/s; SPO-S, 2.18 ± 0.30 m/s; and SPO-FW, 2.45 ± 0.35 m/s). The CC technique, was complex to implement but also gave considerable consistency (CC, 2.64 ± 0.36 m/s). The family of techniques utilizing only a single point of comparison all provided less consistent results (M1D, 2.82 ± 0.56 m/s; M2D, 2.90 ± 1.09 m/s; and F2F, 3.42 ± 1.67 m/s).

Consistent length data sets were then created (n = 5) and analyzed. Results were: SPO-S, 2.74 ± 0.34 m/s; SPO-D, 2.67 ± 0.40 m/s; SPO-FW, 2.78 ± 0.36 m/s; F2F, 2.53 ± 0.52 m/s; M1D, 3.39 ± 1.28 m/s; M2D, 3.20 ± 1.90 m/s; and CC, 3.23 ± 0.40 m/s.

Comparison of the results indicate that of the techniques included in this study, the new SPO technique provided the greatest reliability for determining PWV values. It was also intuitive to implement.
Open Access: This is an open access article distributed under the CC BY-NC license.

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<Previous Article In Issue

Journal: Artery Research
Volume-Issue: 13 - C
Pages: 17 - 27
Publication Date: 2016/01/20
ISSN (Online): 1876-4401
ISSN (Print): 1872-9312
DOI: 10.1016/j.artres.2015.12.001 How to use a DOI?
Open Access: This is an open access article distributed under the CC BY-NC license.

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ris enw bib

TY  - JOUR
AU  - John Runciman
AU  - Martine McGregor
AU  - Gonçalo Silva
AU  - Gabrielle Monteith
AU  - Laurent Viel
AU  - Luis G. Arroyo
PY  - 2016
DA  - 2016/01/20
TI  - A new statistical phase offset technique for the calculation of in vivo pulse wave velocity
JO  - Artery Research
SP  - 17
EP  - 27
VL  - 13
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2015.12.001
DO  - 10.1016/j.artres.2015.12.001
ID  - Runciman2016
ER  -

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