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OBJECTIVE: Current randomized controlled trials (RCTs) comparing percutaneous coronary intervention with drug eluting stent (DES-PCI) with coronary artery bypass grafting (CABG) in multivessel disease are underpowered to detect a difference in hard clinical end-points such as mortality, myocardial infarction and stroke. We aimed to overcome this limitation by conducting a meta-analysis of contemporary RCTs. METHODS: A systematic literature search was conducted for all RCTs comparing DES-PCI versus CABG in multivessel disease published through May 2015. Inverse variance weighting was used to pool data from individual studies (<1 favouring DES-PCI and >1 CABG favouring surgery). RESULTS: A total of five randomized trials including 4563 subjects were analysed. After an average follow-up of 3.4 years, DES-PCI was associated with a significantly increased risk of overall mortality (HR 1.51; 95%CI 1.23-1.84; P<0.001), MI (HR 2.02; 95%CI 1.57-2.58; P<0.001) and repeat revascularization (HR 2.54; 95%CI 2.07-3.11; P=<0.001). CABG marginally increased the risk of stroke (HR 0.70; 95%CI 0.50-0.98; P=0.04). The absolute risk reduction for all-cause mortality (3.3%) and myocardial infarction (4.3%) with CABG was larger than the absolute risk reduction for stroke (0.9%) with DES-PCI. CONCLUSION: In patients with multivessel coronary disease, CABG was found to be superior to DES-PCI by reducing the risk of mortality and subsequent myocardial infarction at the expense of a marginally increased risk of stroke.

Original publication

DOI

10.1016/j.ijcard.2016.02.090

Type

Journal article

Journal

Int J Cardiol

Publication Date

01/05/2016

Volume

210

Pages

19 - 24

Keywords

CABG, Meta-analysis, PCI, Cardiac Surgical Procedures, Coronary Artery Bypass, Coronary Artery Disease, Drug-Eluting Stents, Humans, Percutaneous Coronary Intervention, Randomized Controlled Trials as Topic, Risk Factors, Treatment Outcome