Clopidogrel Versus Newer P2Y12 Antagonists for Percutaneous Coronary Intervention in Patients with Out-of-Hospital Cardiac Arrest Managed with Therapeutic Hypothermia: A Meta-Analysis

INTRODUCTION: The impact of therapeutic hypothermia (TH) on outcomes of percutaneous coronary intervention (PCI) and the optimal antiplatelet treatment remains debatable. METHODS: Electronic databases were searched for randomized trials and observational studies to evaluate the available clinical evidence comparing the use of clopidogrel versus newer P2Y12 antagonists in cases of TH after PCI. The primary outcome was in-hospital definite stent thrombosis while the secondary outcomes were in-hospital mortality and major bleeding. Fixed-effects risk ratios (RRs) were estimated using Mantel-Haenszel method. RESULTS: The final analysis included five studies with a total of 290 patients. There was no difference in the incidence of stent thrombosis (RR 0.92; 95% CI 0.35-2.38), in-hospital mortality (RR 1.38; 95% CI 0.72-2.65), and major bleeding (RR 0.89; 95% CI 0.33-2.40) between patients receiving clopidogrel versus those receiving newer agents. CONCLUSIONS: This meta-analysis showed no difference between clopidogrel and newer antiplatelet agents in the incidence of stent thrombosis or in-hospital mortality for PCI in cases of TH. Further randomized studies are needed to explore the optimal dual antiplatelet treatment in TH

Management of myocardial revascularization in patients with stable coronary artery disease undergoing transcatheter aortic valve implantati

Background:The best management of stable coronary artery disease (CAD) in patients undergoing transcatheter aortic valve implantation (TAVI) is still unclear due to the marked inconsistency of the available evidence. Methods:The REVASC-TAVI registry (Management of Myocardial Revascularization in Patients Undergoing Transcatheter Aortic Valve Implantation With Coronary Artery Disease) collected data from 30 centers worldwide on patients undergoing TAVI who had significant, stable CAD at preprocedural work-up. For the purposes of this analysis, patients with either complete or incomplete myocardial revascularization were compared in a propensity score matched analysis, to take into account of baseline confounders. The primary and co-primary outcomes were all-cause death and the composite of all-cause death, stroke, myocardial infarction, and rehospitalization for heart failure, respectively, at 2 years. Results:Among 2407 patients enrolled, 675 pairs of patients achieving complete or incomplete myocardial revascularization were matched. The primary (21.6% versus 18.2%, hazard ratio, 0.88 [95% CI, 0.66-1.18]; P=0.38) and co-primary composite (29.0% versus 27.1%, hazard ratio, 0.97 [95% CI, 0.76-1.24]; P=0.83) outcome did not differ between patients achieving complete or incomplete myocardial revascularization, respectively. These results were consistent across different prespecified subgroups of patients (< or >75 years of age, Society of Thoracic Surgeons score > or <4%, angina at baseline, diabetes, left ventricular ejection fraction > or <40%, New York Heart Association class I/II or III/IV, renal failure, proximal CAD, multivessel CAD, and left main/proximal anterior descending artery CAD; all P values for interaction >0.10). Conclusions:The present analysis of the REVASC-TAVI registry showed that, among TAVI patients with significant stable CAD found during the TAVI work-up, completeness of myocardial revascularization achieved either staged or concomitantly with TAVI was similar to a strategy of incomplete revascularization in reducing the risk of all cause death, as well as the risk of death, stroke, myocardial infarction, and rehospitalization for heart failure at 2 years, regardless of the clinical and anatomical situations