• JACC Cardiovasc Interv · Aug 2009

    Review Meta Analysis

    A meta-analysis of 3,773 patients treated with percutaneous coronary intervention or surgery for unprotected left main coronary artery stenosis.

    • Hursh Naik, Anthony J White, Tarun Chakravarty, James Forrester, Gregory Fontana, Saibal Kar, Prediman K Shah, Robert E Weiss, and Raj Makkar.
    • Cedars-Sinai Heart Institute, Cedars Sinai Medical Center, Los Angeles, California 90048, USA.
    • JACC Cardiovasc Interv. 2009 Aug 1; 2 (8): 739-47.

    ObjectivesThis study sought to understand the total weight of evidence regarding outcomes in coronary artery bypass grafting (CABG) versus percutaneous coronary intervention (PCI) in unprotected left main coronary artery (ULMCA) stenosis.BackgroundFollowing a diagnosis of significant ULMCA stenosis in an individual that is a candidate for surgery, CABG is recommended by the American College of Cardiology/American Heart Association guidelines, whereas PCI is not recommended (Class III).MethodsDatabases were searched for clinical studies that reported outcomes after PCI and CABG for the treatment of ULMCA stenosis. Ten studies were identified that included a total of 3,773 patients.ResultsMeta-analysis showed that death, myocardial infarction, and stroke (major adverse cardiovascular or cerebrovascular events) were similar in the PCI- and CABG-treated patients at 1 year (odds ratio [OR]: 0.84 [95% confidence interval: 0.57 to 1.22]), 2 years (OR: 1.25 [95% CI: 0.81 to 1.94]), and 3 years (OR: 1.16 [95% CI: 0.68 to 1.98]). Target vessel revascularization was significantly higher in the PCI group at 1 year (OR: 4.36 [95% CI: 2.60 to 7.32]), 2 years (OR: 4.20 [95% CI: 2.21 to 7.97]), and 3 years (OR: 3.30 [95% CI: 0.96 to 11.33]). There was no difference in mortality in PCI- versus CABG-treated patients at 1 year (OR: 1.00 [95% CI: 0.70 to 1.41]), 2 years (OR: 1.27 [95% CI: 0.83 to 1.94]), and 3 years (OR: 1.11 [95% CI: 0.66 to 1.86]).ConclusionsOur analysis reveals no difference in mortality or major adverse cardiovascular or cerebrovascular events, for up to 3 years, between PCI and CABG for the treatment of ULMCA stenosis. However, PCI patients had a significantly higher risk of target vessel revascularization. In selected patients with ULMCA stenosis, PCI is emerging as an acceptable option.

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