Examination of the In Vivo Mechanisms of Late Drug-Eluting Stent Thrombosis Findings From Optical Coherence Tomography and Intravascular Ultrasound Imaging

被引：272

作者：

Guagliumi, Giulio ^{[1
]}

Sirbu, Vasile ^{[1
]}

Musumeci, Giuseppe ^{[1
]}

Gerber, Robert ^{[2
]}

Biondi-Zoccai, Giuseppe ^{[1
]}

Ikejima, Hideyuki ^{[1
]}

Ladich, Elena ^{[3
]}

Lortkipanidze, Nikoloz ^{[1
]}

Matiashvili, Aleksandre ^{[1
]}

Valsecchi, Orazio ^{[1
]}

Virmani, Renu ^{[3
]}

Stone, Gregg W. ^{[4
,5
]}

机构：

[1] Osped Riuniti Bergamo, Cardiovasc Dept, I-24121 Bergamo, Italy

[2] Imperial Coll Healthcare Natl Hlth Serv Trust, St Marys Hosp, London, England

[3] CVPath Inc, Gaithersburg, MD USA

[4] Columbia Univ, Med Ctr, New York, NY USA

[5] Cardiovasc Res Fdn, New York, NY USA

来源：

JACC-CARDIOVASCULAR INTERVENTIONS | 2012年 / 5卷 / 01期

关键词：

acute myocardial infarction; drug-eluting stent(s); late stent thrombosis; optical coherence tomography; percutaneous coronary intervention; CORONARY-THROMBOSIS; BARE-METAL; FOLLOW-UP; IMPLANTATION; ACQUISITION; DOCUMENT; ARTERY;

D O I：

10.1016/j.jcin.2011.09.018

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Objectives This study investigated the role of uncovered stent struts on late stent thrombosis (LST) after drug-eluting stent (DES) implantation with optical coherence tomography (OCT). Background Autopsy studies have identified delayed healing and lack of endothelialization of DES struts as the hallmarks of LST. DES strut coverage has not previously been examined in vivo in patients with LST. Methods We studied 54 patients, including 18 with DES LST (median 615 days after implant) undergoing emergent percutaneous coronary interventions and 36 matched DES control subjects undergoing routine repeat OCT and intravascular ultrasound (IVUS) who did not experience LST for >= 3 years. Thrombus aspiration was performed during emergent percutaneous coronary intervention before OCT and IVUS assessment. Results By OCT, patients with LST-compared with control subjects had a higher percentage of uncovered (median [interquartile range]) (12.27 [5.50 to 23.33] vs. 4.14 [3.00 to 6.22], p < 0.001) and malapposed (4.60 [1.85 to 7.19] vs. 1.81 [0.00 to 2.99], p < 0.001) struts. The mean neointimal thickness was similar in the 2 groups (0.23 +/- 0.17 mm vs. 0.17 +/- 0.09 mm, p = 0.28). By IVUS, stent expansion was comparable in the 2 groups, although positive remodeling was increased in patients with LST (mean vessel cross-section area 19.4 +/- 5.8 mm(2) vs. 15.1 +/- 4.6 mm(2), p = 0.003). Thrombus aspiration demonstrated neutrophils and eosinophils in most cases. By multivariable analysis, the length of segment with uncovered stent struts by OCT and the remodeling index by IVUS were independent predictors of LST. Conclusions In this in vivo case-controlled study, the presence of uncovered stent struts as assessed by OCT and positive vessel remodeling as imaged by IVUS were associated with LST after DES. (J Am Coll Cardiol Intv 2012;5:12-20) (C) 2012 by the American College of Cardiology Foundation

引用

页码：12 / 20

页数：9

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