What did the meta-analyses of PCI and CABG show? 
Meta-analyses of PCI and CABG have failed to show that the introduction of bare-metal stents (BMS) confers a survival advantage over balloon angioplasty or that the use of drug-eluting stents (DES) confers a survival advantage over BMS. Additionally, no study to date has demonstrated that PCI in patients with SIHD improves survival rates.