Document Detail

Combination of plaque burden, wall shear stress, and plaque phenotype has incremental value for prediction of coronary atherosclerotic plaque progression and vulnerability.
MedLine Citation:
PMID:  24468138     Owner:  NLM     Status:  In-Data-Review    
AIMS: Large plaque burden, certain phenotypes, and low wall shear stress (WSS) are associated with adverse outcomes and high WSS with development of plaque vulnerability. We aimed to investigate the incremental value of the combination of plaque burden, WSS and plaque phenotype for prediction of coronary atherosclerotic plaque progression and vulnerability.
METHODS: Twenty patients with CAD underwent baseline and 6-month follow-up coronary virtual histology-intravascular ultrasound (VH-IVUS) and computational fluid dynamics modeling for calculation of WSS. Low WSS was defined as <10 dynes/cm(2) and high WSS as ≥25 dynes/cm(2). Baseline plaque characteristics and WSS were related to plaque progression and vulnerability.
RESULTS: In 2249 VH-IVUS frames analyzed, coronary segments with both plaque burden >40% and low WSS had significantly greater change in plaque area at follow-up (+0.68 ± 1.05 mm(2)), compared to segments with plaque burden >40% without low WSS (-0.28 ± 1.32 mm(2)) or segments with low WSS and plaque burden ≤40% (+0.05 ± 0.71 mm(2)) (p = 0.047). Among plaque phenotypes, pathologic intimal thickening (PIT) had the greatest increase in necrotic core (NC) area (p = 0.06) and greatest decrease in fibro-fatty (FF) area (p < 0.0001). At follow-up, compared to segments with either plaque burden >60%, PIT, or high WSS, those with a combination of plaque burden >60%, PIT, and high WSS developed greater increase in NC area (p = 0.002), greater decrease in FF (p = 0.004) and fibrous areas (p < 0.0001), and higher frequency of expansive remodeling (p = 0.019).
CONCLUSION: Combination of plaque burden, WSS, and plaque phenotype has incremental value for prediction of coronary plaque progression and increased plaque vulnerability in patients with non-obstructive CAD.
Michel T Corban; Parham Eshtehardi; Jin Suo; Michael C McDaniel; Lucas H Timmins; Emad Rassoul-Arzrumly; Charles Maynard; Girum Mekonnen; Spencer King; Arshed A Quyyumi; Don P Giddens; Habib Samady
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Publication Detail:
Type:  Journal Article     Date:  2013-12-01
Journal Detail:
Title:  Atherosclerosis     Volume:  232     ISSN:  1879-1484     ISO Abbreviation:  Atherosclerosis     Publication Date:  2014 Feb 
Date Detail:
Created Date:  2014-01-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0242543     Medline TA:  Atherosclerosis     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  271-6     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.
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