
pmid: 33272031
Background: The supra-annular leaflet position and tall stent frame of the self-expanding Evolut PRO or Evolut PRO+ transcatheter heart valves (THVs) may cause coronary occlusion during transcatheter aortic valve replacement (TAVR)-in-TAVR and present challenges for future coronary access. We sought to evaluate the risk of TAVR-in-TAVR with Evolut PRO or Evolut PRO+ THVs and the feasibility of future coronary access. Methods: The CoreValve Evolut PRO Prospective Registry (EPROMPT; NCT03423459) prospectively enrolled patients with symptomatic severe aortic stenosis to undergo TAVR using a commercially available latest generation self-expanding THV at 2 centers in the United States. Computed tomography was performed 30 days after TAVR, which we used to simulate TAVR-in-TAVR with a second Evolut PRO or Evolut PRO+ THV and evaluate for risk of coronary obstruction and feasibility of future coronary access. Results: Eighty-one patients enrolled with interpretable computed tomography are reported herein. Computed tomography simulation predicted sinus of Valsalva sequestration and resultant coronary obstruction during future TAVR-in-TAVR in up to 23% of patients. Computed tomography simulation predicted that the position of the pinned THV leaflets would hinder future coronary access in up to 78% of patients after TAVR-in-TAVR. Conclusions: Further THV design improvements and leaflet modification strategies are needed to mitigate the risk of coronary obstruction during TAVR-in-TAVR with self-expanding THVs and to facilitate future coronary access. Registration: URL: https://www.clinicaltrials.gov . Unique identifier: NCT03423459.
Aortic Valve Stenosis, Prosthesis Design, United States, Transcatheter Aortic Valve Replacement, Treatment Outcome, Coronary Occlusion, Risk Factors, Aortic Valve, Heart Valve Prosthesis, Feasibility Studies, Humans, Tomography
Aortic Valve Stenosis, Prosthesis Design, United States, Transcatheter Aortic Valve Replacement, Treatment Outcome, Coronary Occlusion, Risk Factors, Aortic Valve, Heart Valve Prosthesis, Feasibility Studies, Humans, Tomography
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