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  • Title: Outcomes of primary percutaneous coronary intervention for acute myocardial infarction with unprotected left main coronary artery occlusion.
    Author: Izumikawa T, Sakamoto S, Takeshita S, Takahashi A, Saito S.
    Journal: Catheter Cardiovasc Interv; 2012 Jun 01; 79(7):1111-6. PubMed ID: 22234952.
    Abstract:
    BACKGROUND: We determined the in-hospital and the long-term outcomes of primary percutaneous coronary intervention (PCI) for acute left main coronary artery (LMCA) occlusion. METHODS: Between 1988 and 2009, 72 patients with acute myocardial infarction (AMI) underwent primary PCI for unprotected LMCA occlusion. The short- and the long-term outcomes of primary PCI in these patients were retrospectively evaluated. RESULTS: Upon arrival, cardiogenic shock was observed in 33 (46%) patients and cardiopulmonary arrest (CPA) in 12 (17%). Twenty-three (32%) required extracorporeal life support and 64 (89%) intra-aortic balloon pumping. Although successful reperfusion was achieved in 60 (83%) patients, in-hospital death was observed in 32 (44%). Multivariate analysis revealed predictors of in-hospital death to be CPA on arrival (RR, 7.05; 95% CI: 1.28-39.0; P = 0.025). During 1.7 ± 2.9 years of follow-up, 10 of the 40 hospital survivors died. All presenting CPA on arrival died within 2 years. Although the estimated survival of the all study patients was only 26.2% at 8 years by the Kaplan-Meier methods, those without shock/CPA on arrival showed nearly flat survival curve after 4 years. CONCLUSIONS: Despite performance of primary PCI, patients with AMI due to LMCA occlusion were associated with >50% in-hospital mortality. Hemodynamic deficit upon arrival was the major determinant of their poor hospital outcomes. The hospital survivors, however, were associated with favorable long-term outcomes.
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