JOURNAL ARTICLE
MULTICENTER STUDY

Risk Factors and Long-Term Clinical Outcomes of Second-Generation Drug-Eluting Stent Thrombosis

Shoichi Kuramitsu, Masanobu Ohya, Tomohiro Shinozaki, Hiromasa Otake, Kazunori Horie, Hiroyoshi Kawamoto, Futoshi Yamanaka, Masahiro Natsuaki, Hiroki Shiomi, Gaku Nakazawa, Kenji Ando, Kazushige Kadota, Shigeru Saito, Takeshi Kimura
Circulation. Cardiovascular Interventions 2019, 12 (6): e007822
31177822
Background The risk factors and long-term clinical outcomes of patients with definite stent thrombosis (ST) after second-generation drug-eluting stent (DES) implantation have not yet been adequately assessed. Methods and Results The REAL-ST (Retrospective Multicenter Registry of ST After First- and Second-Generation DES Implantation) included 313 definite ST of second-generation DES (early ST, n=179; late ST, n=66; very late ST, n=68). Four patients without definite ST of second-generation DES were identified as control patients for each ST case. Risk factors of definite ST were mostly different according to the timing of ST: ST-segment-elevation myocardial infarction, non-ST-segment-elevation myocardial infarction, and unstable angina at presentation, current smoking, left ventricular ejection fraction <40%, prior percutaneous coronary intervention, stent overlap, severely calcified lesion, left main coronary artery lesion, proximal left anterior descending lesion, postdiameter stenosis ≥20%, for early ST; age <70 years, ST-segment-elevation myocardial infarction at presentation, hemodialysis, left ventricular ejection fraction <40%, in-stent restenosis, and severely calcified lesion for late ST; and proximal left anterior descending lesion and in-stent restenosis for very late ST. Cumulative 4-year incidence of death after the index ST events was significantly higher in the ST patients than control patients (33.0% versus 12.3%, P<0.001 for early ST versus control; 30.6% versus 14.2%, P<0.001 for late ST versus control; and 28.0% versus 13.0%, P<0.001 for very late ST versus control, respectively). Conclusions Risk factors of definite ST after second-generation DES implantation were mostly different according to the timing of ST. Definite ST patients showed unfavorable long-term clinical outcomes compared with those without definite ST. Clinical Trial Registration URL: https://www.umin.ac.jp . Unique identifier: UMIN000025181.

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