Thin-cap fibroatheroma and microchannel findings in optical coherence tomography correlate with subsequent progression of coronary atheromatous plaques.

Abstract:

AIMS:Morphological characteristics of non-significant coronary plaques (NSCPs) that develop rapid progression have not been fully elucidated. The aim of this study was to clarify the morphological characteristics of NSCPs in patients with coronary artery disease (CAD) using intravascular optical coherence tomography (OCT). METHODS AND RESULTS:Fifty-three consecutive CAD patients undergoing percutaneous coronary intervention were enrolled and 69 NSCPs (per cent diameter stenosis <50%) were identified on baseline angiogram. Baseline characteristics of NSCPs were evaluated by OCT, and patients were followed-up prospectively. At the second coronary angiography, the baseline OCT characteristics and plaque progression were correlated. During the 7-month follow-up period, 13 NSCPs showed angiographic progression and 56 NSCPs did not. Baseline minimum lumen diameter and diametric stenosis were similar between NSCPs with and without progression. Compared with NSCPs without progression, those with progression showed a significantly higher incidence of intimal laceration (61.5 vs. 8.9%, P < 0.01), microchannel (76.9 vs. 14.3%, P < 0.01), lipid pools (100 vs. 60.7%, P = 0.02), thin-cap fibroatheroma (TCFA) (76.9 vs. 14.3%, P < 0.01), macrophage images (61.5 vs. 14.3%, P < 0.01), and intraluminal thrombi (30.8 vs. 1.8%, P < 0.01). Univariate regression analysis showed that TCFA and microchannel images showed high correlation with subsequent luminal progression [odds ratio (OR): 20.0, P < 0.01 and OR: 20.0, P < 0.01, respectively]. CONCLUSION:Optical coherence tomography-based complex characteristics of TCFA and microchannel were the potential predictors of subsequent progression of NSCPs in patients with CAD.

journal_name

Eur Heart J

journal_title

European heart journal

authors

Uemura S,Ishigami K,Soeda T,Okayama S,Sung JH,Nakagawa H,Somekawa S,Takeda Y,Kawata H,Horii M,Saito Y

doi

10.1093/eurheartj/ehr284

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

78-85

issue

1

eissn

0195-668X

issn

1522-9645

pii

ehr284

journal_volume

33

pub_type

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