Safety and efficacy of percutaneous coronary intervention versus coronary artery bypass graft in patients with STEMI and unprotected left main stem disease: A systematic review & meta-analysis

•The advent of percutaneous coronary intervention (PCI) has caused much debate about the optimal revascularization method for LMCAD.•Several studies have previously been conducted comparing PCI versus CABG for LMCAD, however most of these have only taken into account randomized controlled trials (RCTs), while ignoring observational studies.•This study takes data from both RCTs and observational studies to obtain a better comparison of the two revascularization techniques.•It is the first meta-analysis to report data for various adverse outcomes after 10 years of follow-up.