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Increase in epicardial fat volume is associated with greater coronary artery calcification progression in subjects at intermediate risk by coronary calcium score: A serial study using non-contrast cardiac CT.
MedLine Citation:
PMID:  21835407     Owner:  NLM     Status:  Publisher    
OBJECTIVE: Epicardial fat volume (EFV) is related to calcified coronary plaques. However, it is unknown whether baseline EFV or changes in EFV affect the progression of coronary artery calcification over time. METHODS: We identified 375 consecutive asymptomatic subjects with an intermediate risk of developing coronary artery disease, who underwent serial non-contrast CT at least 3-5 years apart. Subjects were divided into tertiles of CCS progression (% increase) between the 2 scans. Subjects from the upper tertile (High Progressors) were matched by age and gender to 81 subjects from the lower tertile (Low Progressors). All subjects underwent serial measurements of CCS and EFV. Relationships between EFV and CCS progression, and change in plaque number were examined. RESULTS: At baseline, there was no difference in EFV, and EFV indexed to body surface area (EFVi) between the groups. At follow-up, EFV, EFVi and percent increase in EFVi-change were higher in High Progressors than Low Progressors (EFV, 102±38cm(3) vs. 90±35cm(3), p=0.03; EFVi, 50±16cm(3)/m(2) vs. 46±15cm(3)/m(2), p=0.03; percent increase in EFVi-change, 15±22% vs. 7±20%, p=0.02). On multivariate analysis, after adjusting for conventional risk factors, EFVi increase≥15% [odds ratio (OR) 2.3, p<0.05], log (baseline CCS) [OR 0.3, p<0.0001] and scan interval time [p=0.003, OR 1.0] were predictive of being a High Progressor. EFVi increase≥15% (β=3.0, p=0.02) and hypertension (β=3.1, p=0.01) were independent predictors of number of new calcified plaques on follow-up. CONCLUSION: Increase in EFV is associated with greater progression of coronary artery calcification in intermediate-risk subjects.
Rine Nakanishi; Ronak Rajani; Victor Y Cheng; Heidi Gransar; Ryo Nakazato; Haim Shmilovich; Yuka Otaki; Sean W Hayes; Louise E J Thomson; John D Friedman; Piotr J Slomka; Daniel S Berman; Damini Dey
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-23
Journal Detail:
Title:  Atherosclerosis     Volume:  -     ISSN:  1879-1484     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-8-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0242543     Medline TA:  Atherosclerosis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ireland Ltd.
Departments of Imaging and Medicine, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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