Usefulness of intravascular ultrasound guidance in percutaneous coronary intervention with second-generation drug-eluting stents for chronic total occlusions (from the multicenter Korean-chronic total occlusion registry)

Sung Jin Hong, Byeong Keuk Kim, Dong Ho Shin, Jung Sun Kim, Myeong Ki Hong, Hyeon Cheol Gwon, Hyo Soo Kim, Cheol Woong Yu, Hun Sik Park, In Ho Chae, Seung Woon Rha, Seung Hwan Lee, Moo Hyun Kim, Seung Ho Hur, Yangsoo Jang

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    58 Citations (Scopus)

    Abstract

    Despite the usefulness of intravascular ultrasound (IVUS) in percutaneous coronary intervention (PCI), the impact of IVUS guidance on clinical outcomes, particularly for chronic total occlusion (CTO) intervention, has rarely been studied. We sought to investigate the clinical usefulness of IVUS-guided CTO intervention with second-generation drug-eluting stent implantation. From 2007 to 2009, a total of 2,568 patients were enrolled in the Korean-CTO registry and 534 patients with successful implantation of second-generation drug-eluting stents were analyzed. IVUS-guided PCI was performed on 206 patients (39%). Clinical outcomes at 2 years were compared between the IVUS-guidance group and the angiography-guidance group in 201 propensity score-matched pairs. The primary end point was the occurrence of definite or probable stent thrombosis. Clinical characteristics were similar between both groups after matching. At 2 years, the IVUS-guidance group showed significantly less stent thrombosis than the angiography-guidance group (0% vs 3.0%, p = 0.014) and a lesser trend toward myocardial infarction (1.0% vs 4.0%, p = 0.058). Target lesion revascularization (TLR) and major adverse cardiovascular event rates were similar. However, a significant interaction was observed between the use of IVUS and lesion length for predicting the TLR (p = 0.037), suggesting usefulness of IVUS in long-lesion (≥3 cm) relative to short-lesion CTO. In conclusion, although IVUS-guided CTO PCI was not associated with a reduction in overall major adverse cardiovascular events, IVUS guidance appears to be associated with a reduction of stent thrombosis and myocardial infarction compared with angiography-guided CTO PCI. Additionally, TLR occurred less frequently in the IVUS-guidance group, especially for long lesions.

    Original languageEnglish
    Pages (from-to)534-540
    Number of pages7
    JournalAmerican Journal of Cardiology
    Volume114
    Issue number4
    DOIs
    Publication statusPublished - 2014 Aug 15

    Bibliographical note

    Funding Information:
    This study was supported by a grant A085012 from the Korea Healthcare Technology R&D Project, Ministry of Health and Welfare , Republic of Korea, supported by a faculty research grant 6-2014-0009 from Yonsei University College of Medicine, and supported by the Cardiovascular Research Center , Seoul, Korea.

    ASJC Scopus subject areas

    • Cardiology and Cardiovascular Medicine

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