Objectives: We present our single center experience with Medtronic CoreValve and Evolut R regarding procedural outcome and 3 years follow-up in patients with degenerated bioprostheses.
Methods: From 1645 patients who underwent transfemoral TAVI at our institution between February 2009 and December 2016, 37 patients with degenerated bioprosthesis were treated with Medtronic CoreValve/Evolut R. All data concerning baseline characteristic, procedural outcomes and follow-up were entered into a dedicated database.
Results: Mean age was 83.9 ± 4.4 years and patients showed an average logistic EuroSCORE of 33.2 ± 16.7%. Successful ViV deployment was achieved in all cases, a permanent pacemaker was implanted in 16.2%, no periinterventional stroke and no coronary obstruction occurred. Mortality at 30 days was 2.7%, at 1-year follow-up 5.7% and at three years 13.5%. Depending on bioprosthesis size <23 mm versus ≥23 mm echocardiographic mean gradients post implantation were significantly higher in the smaller bioprostheses, 22.8 mmHg ± 9.4 mmHg versus 15.1 ± 7.1, P = 0.013.
Conclusion: ViV-TAVI with CoreValve/R is demonstrated to be safe and effective in terms of no coronary obstruction and very low mortality up to 3 years despite slightly higher mean transprosthetic gradients especially in very small bioprostheses.
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