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    Totally Occluded Culprit Coronary Artery in Patients with Non-ST-Elevation Myocardial Infarction Undergoing Percutaneous Coronary Intervention

    Access Status
    Fulltext not available
    Authors
    Fernando, H.
    Duffy, S.J.
    Low, A.
    Dinh, D.
    Adrianopoulos, N.
    Sharma, A.
    Peter, K.
    Stub, D.
    Leong, K.E.
    Ajani, A.
    Clark, D.
    Freeman, M.
    Sebastian, M.
    Brennan, A.
    Selkrig, L.
    Reid, Christopher
    Kaye, D.
    Oqueli, E.
    Date
    2021
    Type
    Journal Article
    
    Metadata
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    Citation
    Fernando, H. and Duffy, S.J. and Low, A. and Dinh, D. and Adrianopoulos, N. and Sharma, A. and Peter, K. et al. 2021. Totally Occluded Culprit Coronary Artery in Patients with Non-ST-Elevation Myocardial Infarction Undergoing Percutaneous Coronary Intervention. American Journal of Cardiology. 156: pp. 52-57.
    Source Title
    American Journal of Cardiology
    DOI
    10.1016/j.amjcard.2021.06.043
    ISSN
    0002-9149
    Faculty
    Faculty of Health Sciences
    School
    Curtin School of Population Health
    Funding and Sponsorship
    http://purl.org/au-research/grants/nhmrc/1111170
    http://purl.org/au-research/grants/nhmrc/1136372
    URI
    http://hdl.handle.net/20.500.11937/93761
    Collection
    • Curtin Research Publications
    Abstract

    The short- and long-term implications of identifying totally occluded culprit coronary arteries (TOCCA) in patients presenting with non-ST-elevation myocardial infarction (NSTEMI) have not been well studied. This study compares clinical characteristics, short- and long-term outcomes of patients with NSTEMI identified with TOCCA to that of patients with non-TOCCA undergoing percutaneous coronary intervention (PCI). We analyzed data from patients with NSTEMI undergoing single-vessel PCI within the Melbourne Interventional Group multi-center registry between 2005 and 2017. Those with TOCCA were compared to those with non-TOCCA. The primary endpoint was 30-day major adverse cardiac events (MACE). Secondary endpoints included 12-month MACE and long-term mortality. A total of 6,829 patients with NSTEMI had single-vessel PCI of which 954 (14%) had TOCCA. Most TOCCA were non-left anterior descending (right coronary artery 39% versus circumflex 33% versus left anterior descending 26%; p <0.001). Cardiogenic shock and left ventricular dysfunction were higher in the TOCCA group, but non-TOCCA patients had more baseline comorbidities. Thirty-day MACE was higher in the TOCCA group (6.7% versus 3.8%; p <0.001). Long-term mortality with an average follow-up of 4.9 years was higher in the non-TOCCA group (12% versus 18%, p <0.01). Multivariable Cox-proportional hazards regression identified TOCCA as an independent predictor of 30-day MACE (HR = 1.93; 95%CI: 1.4-2.6), but not long-term mortality, which was predicted by baseline comorbidities. In conclusion, while patients with NSTEMI with TOCCA undergoing PCI represent a more unstable subgroup early on, long-term outcomes appear more dependent on baseline comorbidities.

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