Assessment of peripheral vascular function with photoplethysmographic pulse amplitude
- DOI
- 10.1016/j.artres.2011.03.001How to use a DOI?
- Keywords
- Population; Vasodilation; Photoplethysmography; Endothelial function
- Abstract
Background: Vasodilation of the peripheral arteries after reactive hyperaemia depends in part on the release of nitric oxide from endothelial cells. Previous studies mainly employed a fingertip tonometric device to derive pulse wave amplitude (PWA) and, therefore, measure PWA hyperaemic changes. Another approach to derive information about PWA is based on photoplethysmography (PPG). We sought to evaluate the correlates of digital PPG PWA hyperaemic responses as a measure of peripheral vascular function.
Methods: Using a fingertip PPG device, we measured digital PWA in 63 subjects enrolled in a population study (55.5% women; mean age, 55 years; 58.7% hypertensive) at baseline and at 30-s intervals for 4 min during reactive hyperaemia induced by a 5-min forearm cuff occlusion. We performed stepwise regression to identify correlates of the hyperaemic response ratio for each 30-s interval after cuff deflation.
Results: With age forced into the models, the explained variance for the PPG PWA ratio totalled from 17.1% at the 210–240-s time interval to 31.3% at 30–60-s time interval. The hyperaemic response at each 30-s interval was significantly higher in women compared to men (P < 0.001). The PPG PWA changes at 0–60-s intervals decreased with higher blood pressure (BP) (P < 0.03). These associations with sex and systolic BP were mutually independent.
Conclusions: Our study described in a population sample the determinants of PPG PWA hyperaemic changes. We demonstrated that measurement of the hyperaemic response by PPG might be a useful tool in the detection of endothelial dysfunction associated with higher BP and male gender.
- Copyright
- © 2011 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
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TY - JOUR AU - Tatiana Kuznetsova AU - Gregory Szczesny AU - Lutgarde Thijs AU - Dominique Jozeau AU - Jan D’hooge AU - Jan A. Staessen PY - 2011 DA - 2011/04/06 TI - Assessment of peripheral vascular function with photoplethysmographic pulse amplitude JO - Artery Research SP - 58 EP - 64 VL - 5 IS - 2 SN - 1876-4401 UR - https://doi.org/10.1016/j.artres.2011.03.001 DO - 10.1016/j.artres.2011.03.001 ID - Kuznetsova2011 ER -