Ahmed N Mahmoud1, Islam Y Elgendy1, Amgad Mentias2, Marwan Saad3, Walid Ibrahim4, Mohammad K Mojadidi1, Ramez Nairooz3, Parham Eshtehardi5, R David Anderson1, Habib Samady5. 1. Division of Cardiovascular Medicine, University of Florida, Gainesville, Florida. 2. Division of Cardiovascular Medicine, University of Iowa, Iowa City, Iowa. 3. Division of Cardiovascular Medicine, University of Arkansas, Little Rock, Arkansas. 4. Department of Medicine, Wayne State University, Detroit, Michigan. 5. Division of Cardiovascular Medicine, Emory University School of Medicine, Atlanta, Georgia.
Abstract
BACKGROUND: Recent trials comparing PCI with CABG for unprotected left main disease yielded discrepant evidence. OBJECTIVES: To perform an updated meta-analysis of randomized trials comparing percutaneous coronary intervention (PCI) with coronary artery bypass grafting (CABG) in patients with unprotected left main coronary artery disease. METHODS: Randomized trials comparing PCI versus CABG for patients with unprotected left main coronary artery disease were included. Summary estimates risk ratios (RRs) were performed with a DerSimonian and Laird model at short-term, intermediate and long-term follow-up periods (i.e., 30-days, 1-year, and >1-year). Outcomes evaluated were major adverse cardiac and cerebrovascular events (MACCE), all-cause mortality, myocardial infarction, stroke, revascularization and stent thrombosis or symptomatic graft occlusion. RESULTS: Six trials with 4,700 patients and a mean SYNTAX score of 23 were included. At short-term follow-up, the risk of MACCE was lower with PCI (RR 0.55, 95% confidence interval [CI] 0.39-0.76) driven by the lower risk of myocardial infarction (RR 0.67, 95% CI 0.46-0.99), and stroke (RR 0.38, 95% CI 0.16-0.90). The risk of MACCE was similar at the intermediate follow-up (RR 1.21, 95% CI 0.97-1.51). At long-term follow-up, PCI was associated with a higher risk of MACCE (RR 1.19, 95% CI 1.01-1.41), due to a higher risk of revascularization (RR 1.62, 95% CI 1.34-1.94), while the risk of all-cause mortality, myocardial infarction, and stroke were similar. CONCLUSIONS: In patients with unprotected left main coronary disease and low to intermediate SYNTAX score, PCI might be an acceptable alternative to CABG.
BACKGROUND: Recent trials comparing PCI with CABG for unprotected left main disease yielded discrepant evidence. OBJECTIVES: To perform an updated meta-analysis of randomized trials comparing percutaneous coronary intervention (PCI) with coronary artery bypass grafting (CABG) in patients with unprotected left main coronary artery disease. METHODS: Randomized trials comparing PCI versus CABG for patients with unprotected left main coronary artery disease were included. Summary estimates risk ratios (RRs) were performed with a DerSimonian and Laird model at short-term, intermediate and long-term follow-up periods (i.e., 30-days, 1-year, and >1-year). Outcomes evaluated were major adverse cardiac and cerebrovascular events (MACCE), all-cause mortality, myocardial infarction, stroke, revascularization and stent thrombosis or symptomatic graft occlusion. RESULTS: Six trials with 4,700 patients and a mean SYNTAX score of 23 were included. At short-term follow-up, the risk of MACCE was lower with PCI (RR 0.55, 95% confidence interval [CI] 0.39-0.76) driven by the lower risk of myocardial infarction (RR 0.67, 95% CI 0.46-0.99), and stroke (RR 0.38, 95% CI 0.16-0.90). The risk of MACCE was similar at the intermediate follow-up (RR 1.21, 95% CI 0.97-1.51). At long-term follow-up, PCI was associated with a higher risk of MACCE (RR 1.19, 95% CI 1.01-1.41), due to a higher risk of revascularization (RR 1.62, 95% CI 1.34-1.94), while the risk of all-cause mortality, myocardial infarction, and stroke were similar. CONCLUSIONS: In patients with unprotected left main coronary disease and low to intermediate SYNTAX score, PCI might be an acceptable alternative to CABG.