Artery Research

Volume 20, Issue C, December 2017, Pages 98 - 98

P146 METHODOLOGICAL ASPECTS AND DETERMINANTS OF HYPEREMIA-MEDIATED SLOWING IN PULSE WAVE VELOCITY: A GENERAL POPULATION STUDY

Authors
Nicholas Cauwenberghs1, Yenthel Heyrman1, Judita Knez2, Lutgarde Thijs1, Jan A. Staessen1, Tatiana Kuznetsova1
1KU Leuven – Research Unit of Hypertension and Cardiovascular Epidemiology, Belgium
2University Clinical Centre Ljubljana – Hypertension Division, Slovenia
Available Online 6 December 2017.
DOI
10.1016/j.artres.2017.10.158How to use a DOI?
Abstract

Background: Recent studies proposed that deceleration in pulse wave velocity (PWV) following hyperemia might reflect arterial distensibility and endothelial function. We therefore investigated methodological aspects and clinical determinants of newly proposed indexes of such flow-mediated slowing (FMS) in a community-based sample.

Methods: In 71 subjects (60.3±13.7 years; 50.7% women), we continuously assessed brachial- radial pulse wave velocity (PWV) using Vicorder® equipment at rest and after 3 or 5 minutes suprasystolic occlusion to induce reactive hyperemia. We calculated the relative change (Δ) in PWV per 30s post-occlusion intervals. We performed stepwise regression analyses to assess determinants of the PWV response.

Results: The decline in PWV during hyperemia was significantly stronger after 5 minutes of occlusion as compared to 3 minutes (effect sizes for 0–180s intervals: −3.58% to −0.1%; P≤0.0019). PWV declined significantly less with higher age during the 0–90s post-occlusion intervals (+1.61 to +3.99%; P≤0.023). On the other hand, we observed that, after 120s of hyperemic response, ΔPWV remained significantly lower in smokers (−4.28% to −5.37%) and subjects with high mean arterial pressure (−2.14% to −2.23%) and low pulse pressure (+2.06% to +2.07%; P≤0.046 for all). Hence, compared to non-smoking normotensives, subjects with cardiovascular risk factors exhibited a delayed age-adjusted recovery of PWV after 5 minutes of occlusion (P≤0.039).

Conclusions: Our findings confirm an occlusion time of 5 minutes for assessment of endothelial function by FMS. Whereas early FMS response might deteriorate with ageing, cardiovascular risk factors such as smoking and hypertension might impair the late recovery of PWV following reactive hyperemia.

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Journal
Artery Research
Volume-Issue
20 - C
Pages
98 - 98
Publication Date
2017/12/06
ISSN (Online)
1876-4401
ISSN (Print)
1872-9312
DOI
10.1016/j.artres.2017.10.158How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - JOUR
AU  - Nicholas Cauwenberghs
AU  - Yenthel Heyrman
AU  - Judita Knez
AU  - Lutgarde Thijs
AU  - Jan A. Staessen
AU  - Tatiana Kuznetsova
PY  - 2017
DA  - 2017/12/06
TI  - P146 METHODOLOGICAL ASPECTS AND DETERMINANTS OF HYPEREMIA-MEDIATED SLOWING IN PULSE WAVE VELOCITY: A GENERAL POPULATION STUDY
JO  - Artery Research
SP  - 98
EP  - 98
VL  - 20
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2017.10.158
DO  - 10.1016/j.artres.2017.10.158
ID  - Cauwenberghs2017
ER  -