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Differential effect of side branch intervention on long-term clinical outcomes according to side branch stenosis after main vessel stenting: Results from the COBIS (Coronary Bifurcation Stenting) Registry II

Authors
Jang, Woo JinPark, Yong HwanHahn, Joo-YongSong, Young BinChoi, Seung-HyukChun, Woo JungOh, Ju HyeonKoo, Bon-KwonRha, Seung WoonJang, YangsooTahk, Seung-JeaKim, Hyo-SooGwon, Hyeon-Cheol
Issue Date
15-10월-2016
Publisher
ELSEVIER IRELAND LTD
Keywords
Coronary bifurcation lesion; Percutaneous coronary intervention; Side branch; Stenosis
Citation
INTERNATIONAL JOURNAL OF CARDIOLOGY, v.221, pp.471 - 477
Indexed
SCIE
SCOPUS
Journal Title
INTERNATIONAL JOURNAL OF CARDIOLOGY
Volume
221
Start Page
471
End Page
477
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/87169
DOI
10.1016/j.ijcard.2016.07.045
ISSN
0167-5273
Abstract
Background: Indication of side branch (SB) intervention aftermain vessel (MV) stenting is not established for coronary bifurcation lesions. Methods: We evaluated 2017 patients who were treated with 1-stent technique or MV stenting as a first strategy. Patients undergoing SB intervention after MV stenting (SB intervention group, n = 929) were compared to those treated with MV stenting only (no-SB intervention group, n - 1088). Results: During amedian follow-up of 37months, cardiac death or myocardial infarction (MI) tended to occur less frequently in the SB intervention group than in the no-SB intervention group (1.8% versus 2.9%; adjusted hazard ratio [HR] 0.53; 95% confidence interval [CI] 0.25-1.11; P= 0.09). There was a significant interaction between SB intervention and SB stenosis after MV stenting (P for interaction <0.01). Among 1077 patients with diameter stenosis of SB >= 50% after MV stenting, SB intervention was associated with a lower risk of cardiac death or MI (1.2% versus 4.2%; adjusted HR 0.22; 95% CI 0.09-0.52; P < 0.01). However, among 940 patients with diameter stenosis of SB <50%, there was no significant difference in cardiac death or MI between the SB intervention group and the no-SB intervention group (3.5% versus 2.2%; adjusted HR 1.36; 95% CI 0.58-3.20; P = 0.48). Conclusions: The effect of SB intervention differed according to SB stenosis after MV stenting. SB intervention may reduce cardiac death or MI in bifurcation lesions with diameter stenosis of SB >= 50% after MV stenting. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
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