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  • Title: Utilization and outcomes of transcatheter aortic valve replacement in the United States shortly after device approval.
    Author: Young MN, Elmariah S, Kennedy KF, Inglessis I, Yeh RW.
    Journal: Catheter Cardiovasc Interv; 2017 Nov 01; 90(5):830-838. PubMed ID: 28326675.
    Abstract:
    OBJECTIVE: The objective of this study was to assess the national uptake of TAVR, associated in-hospital outcomes, and the effect of procedural experience on outcomes in the first two years following device approval. BACKGROUND: Transcatheter aortic valve replacement (TAVR) is a newly established therapy for high-risk patients with severe aortic stenosis. Evaluating the manner in which TAVR has disseminated into real-world practice is essential for understanding its impact on population health. METHODS AND RESULTS: We identified patients undergoing TAVR from the National Inpatient Sample from January 2012 through December 2013. During this period, an estimated 21,185 cases were performed in the United States. Mean age was 81.1 years, 50.8% were male, 86.5% were Caucasian, and 89.6% were Medicare patients. The number of TAVRs performed and of hospitals performing the procedure nationally grew linearly throughout the study period. The most frequent complications included bleeding (26.9%), respiratory failure (19.3%), and renal/metabolic issues (17.2%). Median hospital length of stay was 6 days (IQR 4-10). In-hospital mortality was estimated to be 4.9%. A majority of cases were performed in large (80.8%) and in urban teaching (87%) hospitals. In the first year post-market approval, prior institutional experience with TAVR was associated with significantly reduced risk-adjusted, in-hospital mortality (OR 0.82 per 25 additional TAVRs performed, CI 0.70-0.951, P = 0.009). CONCLUSIONS: Following device approval, the number of TAVRs and hospitals performing TAVR grew dramatically. Procedural complications were frequent and in-hospital mortality was approximately 4.9%. Finally, increased procedural experience was strongly associated with a reduction in inpatient mortality. © 2017 Wiley Periodicals, Inc.
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