| Finger photoplethysmogram pulse amplitude changes induced by flow-mediated dilation. | |
| | |
MedLine Citation:
|
PMID: 18460764 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This study was conducted to investigate the utility and efficacy of finger photoplethysmogram pulse amplitude (PPG-AC) in comparison with the standard Doppler ultrasound in assessing an endothelial function via flow-mediated dilation (FMD). High-resolution B-mode scanning of the right brachial artery (BA) of 31 healthy subjects aged 39.7 +/- 11.3 (range 22-64) years and 52 risk subjects aged 47.7 +/- 10.8 (range 30-65) years were performed before and after 4 min of upper arm occlusion. Concurrent with the ultrasound measurement (where color Doppler imaging was used to enhance arterial boundary detection), PPG signals were recorded from both index fingers for cross evaluation and comparison. Our results show that the finger PPG-AC exhibits a similar response to that of the well-known BA dilation: following the release of pressure (cuff around the BA), the PPG-AC increases abruptly before slowly decreasing toward the baseline. The peak PPG-AC is reached significantly faster than the peak FMD measured by ultrasound among healthy and risk groups (P < 0.001). The proposed technique using a finger photoplethysmogram can be applied in a rapid and non-invasive assessment of peripheral vascular functions as an alternative low-cost and less operator-dependent tool compared to ultrasound. |
| | |
Authors:
|
E Zahedi; R Jaafar; M A Mohd Ali; A L Mohamed; O Maskon |
Related Documents
:
|
3372274 - Clinical evaluation of the pollenex bp-850 automatic sphygmomanometer. 10234114 - Validation of an automated arterial tonometry monitor using association for the advance... 12055944 - The effect of varying cuff position on recording ankle systolic blood pressure. 22627064 - Update on the management of hypertension for secondary stroke prevention. 21141784 - Neediness and narcissistic defensive action. 976254 - Effect of physical fitness on vanillylmandelic acid excretion during immersion. |
Publication Detail:
|
Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2008-05-07 |
Journal Detail:
|
Title: Physiological measurement Volume: 29 ISSN: 0967-3334 ISO Abbreviation: Physiol Meas Publication Date: 2008 May |
Date Detail:
|
Created Date: 2008-05-07 Completed Date: 2008-08-01 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9306921 Medline TA: Physiol Meas Country: England |
Other Details:
|
Languages: eng Pagination: 625-37 Citation Subset: IM |
Affiliation:
|
Biomedical Engineering Laboratory, School of Electrical Engineering, Sharif University of Technology, Tehran, Iran. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Blood Flow Velocity / physiology* Blood Pressure / physiology* Brachial Artery / physiology*, ultrasonography Female Fingers / blood supply*, physiology* Humans Male Middle Aged Photoplethysmography / methods* Reproducibility of Results Sensitivity and Specificity Vasodilation / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Flow-area relationship in internal carotid and vertebral arteries.
Next Document: Bioimpedance-based identification of malnutrition using fuzzy logic.