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A Meta-Analysis of Mortality and Major Adverse Cardiovascular and Cerebrovascular Events Following Transcatheter Aortic Valve Implantation Versus Surgical Aortic Valve Replacement for Severe Aortic Stenosis

      The purpose of this meta-analysis was to compare postprocedural mortality and major adverse cardiovascular and cerebrovascular events between transcatheter aortic valve implantation (TAVI) and surgical aortic valve replacement (SAVR) for severe aortic stenosis. Seventeen studies (n = 4,659) comparing TAVI (n = 2,267) and SAVR (n = 2,392) were included. End points were baseline logistic European System for Cardiac Operative Risk Evaluation score, all-cause mortality, cardiovascular mortality, myocardial infarction, stroke, transient ischemic attack, and major bleeding events. Mean differences or risk ratios with 95% confidence intervals were computed, and p values <0.05 were considered significant. The population was matched for risk between the 2 groups on the basis of logistic European System for Cardiac Operative Risk Evaluation score for all outcomes except 30-day all-cause mortality, which had a high-risk population in the TAVI group (p = 0.02). There was no significant difference found in all-cause mortality at 30 days (p = 0.97) and at an average of 85 weeks (p = 0.07). There was no significant difference in cardiovascular mortality (p = 0.54) as well as the incidence of myocardial infarction (p = 0.59), stroke (p = 0.36), and transient ischemic attack (p = 0.85) at averages of 86, 72, 66, and 89 weeks, respectively. Compared with patients who underwent TAVI, those who underwent SAVR had a significantly higher frequency of major bleeding events (p <0.0001) at mean follow-up of 66 weeks. In conclusion, TAVI has similar cardiovascular and all-cause mortality to SAVR at early and long-term follow-up. TAVI is superior to SAVR for major bleeding complications and noninferior to SAVR for postprocedural myocardial infarctions and cerebrovascular events. TAVI is a safe alternative to SAVR in selected high-risk elderly patients with severe aortic stenosis.
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