Coronary Artery Wall Shear Stress Is Associated With Progression and Transformation of Atherosclerotic Plaque and Arterial Remodeling in Patients With Coronary Artery Disease

被引:620
作者
Samady, Habib [1 ]
Eshtehardi, Parham [1 ]
McDaniel, Michael C. [1 ]
Suo, Jin [2 ]
Dhawan, Saurabh S. [1 ]
Maynard, Charles [3 ]
Timmins, Lucas H. [1 ,2 ]
Quyyumi, Arshed A. [1 ]
Giddens, Don P. [2 ]
机构
[1] Emory Univ, Sch Med, Dept Med, Div Cardiol, Atlanta, GA 30322 USA
[2] Georgia Inst Technol, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA
[3] Univ Washington, Dept Hlth Serv, Seattle, WA 98195 USA
关键词
atherosclerosis; coronary artery disease; hemodynamics; intravascular ultrasonography; interventional; wall shear stress; HISTOLOGY INTRAVASCULAR ULTRASOUND; EXPERT CONSENSUS DOCUMENT; NATURAL-HISTORY; BLOOD-FLOW; ENDOTHELIAL DYSFUNCTION; PATTERNS; LOCALIZATION; ACQUISITION; EXPRESSION; RUPTURE;
D O I
10.1161/CIRCULATIONAHA.111.021824
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background-Experimental studies suggest that low wall shear stress (WSS) promotes plaque development and high WSS is associated with plaque destabilization. We hypothesized that low-WSS segments in patients with coronary artery disease develop plaque progression and high-WSS segments develop necrotic core progression with fibrous tissue regression. Methods and Results-Twenty patients with coronary artery disease underwent baseline and 6-month radiofrequency intravascular ultrasound (virtual histology intravascular ultrasound) and computational fluid dynamics modeling for WSS calculation. For each virtual histology intravascular ultrasound segment (n=2249), changes in plaque area, virtual histology intravascular ultrasound-derived plaque composition, and remodeling were compared in low-, intermediate-, and high-WSS categories. Compared with intermediate-WSS segments, low-WSS segments developed progression of plaque area (P=0.027) and necrotic core (P < 0.001), whereas high-WSS segments had progression of necrotic core (P < 0.001) and dense calcium (P < 0.001) and regression of fibrous (P < 0.001) and fibrofatty (P < 0.001) tissue. Compared with intermediate-WSS segments, low-WSS segments demonstrated greater reduction in vessel (P < 0.001) and lumen area (P < 0.001), and high-WSS segments demonstrated an increase in vessel (P < 0.001) and lumen (P < 0.001) area. These changes resulted in a trend toward more constrictive remodeling in low-compared with high-WSS segments (73% versus 30%; P=0.06) and more excessive expansive remodeling in high-compared with low-WSS segments (42% versus 15%; P=0.16). C onclusions-Compared with intermediate-WSS coronary segments, low-WSS segments develop greater plaque and necrotic core progression and constrictive remodeling, and high-WSS segments develop greater necrotic core and calcium progression, regression of fibrous and fibrofatty tissue, and excessive expansive remodeling, suggestive of transformation to a more vulnerable phenotype.
引用
收藏
页码:779 / 788
页数:10
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