• Ann. Thorac. Surg. · Jan 2016

    Changes in Risk Profile and Outcomes of Patients Undergoing Surgical Aortic Valve Replacement From the Pre- to Post-Transcatheter Aortic Valve Replacement Eras.

    • Brian R Englum, Asvin M Ganapathi, Matthew A Schechter, J Kevin Harrison, Donald D Glower, and G Chad Hughes.
    • Department of Surgery, Duke University Medical Center, Durham, North Carolina.
    • Ann. Thorac. Surg. 2016 Jan 1; 101 (1): 110-7.

    BackgroundWith initiation of transcatheter aortic valve replacement (TAVR) programs, centers may see changes in surgical aortic valve replacement (SAVR) populations and related outcomes because of more high-risk patients undergoing TAVR rather than SAVR. Little data exist on the potential changes in the risk profiles and outcomes of SAVR patients from the pre- to post-TAVR eras. As such, this study sought to evaluate changes in the SAVR population at a tertiary referral center after TAVR program initiation.MethodsUsing a single-center valve surgical database, annual volume, patient characteristics, operative details, and predicted and observed mortality for patients undergoing isolated SAVR or SAVR + coronary artery bypass grafting (CABG) from 2006 to 2013 were evaluated. Patients were divided into 3 eras: (1) pre-TAVR (January 2006-June 2009), (2) transition (July 2009-March 2011), and (3) TAVR (April 2011-June 2013). The primary analysis compared predicted and observed mortality in pre-TAVR and TAVR eras.ResultsFrom 2006 to 2013, 1,380 SAVR patients were identified, with 505 (36.6%), 330 (23.9%), and 545 (39.5%) patients from the pre-TAVR, transition, and TAVR eras, respectively. SAVR case volume increased from 131 to 256 cases per year (95.4% increase) from the pre-TAVR to the post-TAVR eras. Predicted risk of mortality (PROM) for SAVR patients from the pre-TAVR to TAVR eras by The Society of Thoracic Surgeons (STS)-PROM was stable near 3.8% (p = 0.82). Crude 30-day SAVR mortality trended down from 2.8% in the pre-TAVR era to 1.5% in the post-TAVR era (p = 0.23).ConclusionsConsistent with previous studies, initiation of a TAVR program was associated with increased SAVR volume. Risk profiles for SAVR patients in the TAVR era remained similar by the STS-PROM, indicating generally stable risk among surgical patients after launching a TAVR program. These data suggest that significant changes in the risk profiles of SAVR patients should not be expected with the initiation of a TAVR program. Further research will need to reevaluate these changes once TAVR becomes more widely available.Copyright © 2016 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.

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