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Statins use and coronary artery plaque composition: results from the International Multicenter CONFIRM Registry.

 Ryo Nakazato ; Heidi Gransar ; James K. Min ; Jonathon Leipsic ; Yong-Jin Kim ; Gudrun Feuchtner ; Allison Dunninge ; Todd C. Villines ; Leslee J. Shaw ; Gilbert Raff ; Erica Maffei ; Philipp Kaufmann ; Joerg Hausleiter ; Martin Hadamitzky ; Augustin Delago ; Benjamin J.W. Chow ; Kavitha Chinnaiyan ; Ricardo C. Cury ; Hyuk-Jae Chang ; Tracy Q. Callister ; Filippo Cademartiri ; Matthew J. Budoff ; Mouaz Al-Mallah ; Stephan Achenbach ; Fay Y. Lin ; Victor Y. Cheng ; Daniel S. Berman 
 Atherosclerosis, Vol.225(1) : 148~153, 2012 
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OBJECTIVE: The effect of statins on coronary artery plaque features beyond stenosis severity is not known. Coronary CT angiography (CCTA) is a novel non-invasive method that permits direct visualization of coronary atherosclerotic features, including plaque composition. We evaluated the association of statin use to coronary plaque composition type in patients without known coronary artery disease (CAD) undergoing CCTA. METHODS: From consecutive individuals, we identified 6673 individuals (2413 on statin therapy and 4260 not on statin therapy) with no known CAD and available statin use status. We studied the relationship between statin use and the presence and extent of specific plaque composition types, which was graded as non-calcified (NCP), mixed (MP), or calcified (CP) plaque. RESULTS: The mean age was 59 ± 11 (55% male). Compared to the individuals not taking statins, those taking statins had higher prevalence of risk factors and obstructive CAD. In multivariable analyses, statin use was associated with increased the presence of MP [odds ratio (OR) 1.46, 95% confidence interval (CI) 1.27-1.68), p < 0.001] and CP (OR 1.54, 95% CI 1.36-1.74, p < 0.001), but not NCP (OR 1.11, 95% CI 0.96-1.29, p = 0.1). Further, in multivariable analyses, statin use was associated with increasing numbers of coronary segments possessing MP (OR 1.52, 95% CI 1.34-1.73, p < 0.001) and CP (OR 1.52, 95% CI 1.36-1.70, p < 0.001), but not coronary segments with NCP (OR 1.09, 95% CI 0.94-1.25, p = 0.2). CONCLUSION: Statin use is associated with an increased prevalence and extent of coronary plaques possessing calcium. The longitudinal effect of statins on coronary plaque composition warrants further investigation
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