Document Detail


Non-invasive assessment of atherosclerotic plaques effects on the segment-to-segment human carotid visco-elasticity and filtering.
MedLine Citation:
PMID:  21096439     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Although a variety of factors have been proposed as key factors of the atherosclerotic plaque vulnerability, the mechanisms that contribute to this problem are not yet fully characterized. In previous works we demonstrated that changes in arterial wall viscosity and elasticity and/or in the filtering function (FF) could be in the basis of arterial wall alterations. If these properties are altered in arterial wall with atherosclerotic plaques remain to be analyzed. Our aims were to analyze, the arterial wall visco-elasticity and FF of human carotid arteries with atherosclerotic plaques. To this end, instantaneous arterial diameter waveforms were obtained non-invasively (B-Mode Echography), in five sites (S1-S5) on the carotid artery. After that, diameter waveform obtained in S1 (first segment of the common carotid artery) was calibrated using pressure values, and used to quantify the pressure-diameter relationship for each segment. From pressure-diameter relationships, viscosity, elasticity and FF were quantified. Central portions of atherosclerotic plaques showed a reduced FF. At least in theoretical terms, the FF reduction could be related with the plaque vulnerability.
Authors:
D Bia; F Pessana; P Forcada; Y Zócalo; C Kotliar; R L Armentano
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2010     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2010  
Date Detail:
Created Date:  2010-11-24     Completed Date:  2011-03-30     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2533-6     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Aged
Atherosclerosis / diagnosis*,  pathology*
Calibration
Carotid Arteries / pathology*
Echocardiography / methods
Elasticity
Humans
Male
Middle Aged
Models, Statistical
Plaque, Atherosclerotic / diagnosis,  pathology
Pressure
Software
Ultrasonography / methods
Viscosity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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