Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Clinical Investigation
Age-Related Differences in Intravascular Ultrasound Findings in 1,009 Coronary Artery Disease Patients
Young Joon HongMyung Ho JeongYoungkeun AhnDoo Sun SimJong Won ChungJung Sun ChoNam Sik YoonHyun Ju YoonJae Youn MoonKye Hun KimHyung Wook ParkJu Han KimJeong Gwan ChoJong Chun ParkJung Chaee Kang
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2008 Volume 72 Issue 8 Pages 1270-1275


Background The aim of this study was to assess the age-related differences in intravascular ultrasound (IVUS) findings of target lesions in patients with coronary artery disease. Methods and Results The 1,009 patients who underwent IVUS imaging were grouped according to an increase of 10 years of age: Group I [<50 years (n=144)]; Group II [51-60 years (n=259)]; Group III [61-70 years (n=249)]; Group IV [71-80 years (n=264)]; and Group V [>80 years, (n=93)]. Calcified plaque (18%, 25%, 33%, 38%, and 46%, p<0.001) and negative remodeling (29%, 48%, 44%, 44%, and 66%, p<0.001) were most common, and reference segment plaque burden (35±11%, 35±10%, 39±10%, 38±10%, and 40±11%, p<0.001) was greatest in Group V. Plaque rupture (52%, 31%, 42%, 38%, and 20%, p=0.009) and thrombus (38%, 30%, 31%, 24%, and 11%, p=0.026) were most common in Group I. In the multiple logistic regression analysis, patient age was an independent predictor of calcified plaque (odds ratio (OR)=1.03, p=0.001), negative remodeling (OR=1.04, p=0.001), and mean reference segment plaque burden >50% (OR=1.03, p=0.006). Conclusion Elderly patients have more severe calcifications with negative remodeling and diffuse atherosclerosis, whereas younger patients have more unstable plaque morphology. (Circ J 2008; 72: 1270 - 1275)

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