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Redo-TAVI with the SAPIEN 3 valve in degenerated calcified CoreValve/Evolut explants.
EuroIntervention
November 2024
Cardiovascular Translational Lab, Centre for Heart Lung Innovation, University of British Columbia and Providence Health Care, St. Paul's Hospital, Vancouver, Canada.
Article Synopsis
- Redo-transcatheter aortic valve implantation (TAVI) is often needed for failed aortic valves, specifically examining SAPIEN 3 (S3) valves in degenerated CoreValve/Evolut (CV/EV) valves, which is not fully understood.
- The study assessed the performance of S3 valves following implantation in calcified CV/EV valves through various hydrodynamic tests, measuring factors like mean gradient, effective orifice area, and leaflet behaviors.
- Results indicated that S3 valves generally performed well, showing decreased mean gradient and acceptable effective orifice area, but issues like underexpansion, leaflet pinwheeling, and calcium protrusion were noted, highlighting the need for further research on long
Feasibility of redo-TAVI in the self-expanding ACURATE neo2 valve: a computed tomography study.
EuroIntervention
November 2024
The Heart Center, Rigshospitalet, Copenhagen, Denmark.
Background: Redo-transcatheter aortic valve implantation (TAVI) may be unfeasible because of the risk of compromising coronary flow or coronary access by the pinned back leaflets of the index transcatheter aortic valve.
Aims: We aimed to evaluate the feasibility of redo-TAVI using the balloon-expandable SAPIEN 3 (S3) implanted within the self-expanding ACURATE neo2 (ACn2) valve and to identify predictors associated with a high risk of compromising coronary flow.
Methods: A total of 153 post-ACn2 TAVI cardiac computed tomography scans were analysed.
Effects of implantation height on the performance of a redo transcatheter aortic valve replacement using a balloon-expandable valve.
JTCVS Open
June 2024
Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Ga.
Objective: The use of the transcatheter aortic valve in low-risk patients might lead to a second intervention due to the deterioration of the first 1. Understanding the implantation height is key to an effective redo transcatheter aortic valve replacement treatment.
Methods: The effects of implantation height on the performance of a balloon-expandable valve within a self-expandable valve were assessed using hemodynamic testing and particle image velocimetry.
Redo-TAVR Feasibility After SAPIEN 3 Stratified by Implant Depth and Commissural Alignment: A CT Simulation Study.
Circ Cardiovasc Interv
March 2024
The Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York (A.N.K., G.H.L.T., S.K., M.V., M.B., S.G., A.H., L.S., S.L., G.D.D., S.K.S., A.S.K., P.K.).
Background: Redo-transcatheter aortic valve replacement (TAVR) can pin the index transcatheter heart valve leaflets open leading to sinus sequestration and restricting coronary access. The impact of initial implant depth and commissural alignment on redo-TAVR feasibility is unclear. We sought to determine the feasibility of redo-TAVR and coronary access after SAPIEN 3 (S3) TAVR stratified by implant depth and commissural alignment.
View Article and Find Full Text PDFRedo Transcatheter Aortic Valve Implantation in the Lotus Mechanically Expanded Transcatheter Heart Valve: Bench-Top Analysis, Clinical Experience, and Procedural Guidance.
Circ Cardiovasc Interv
November 2023
Department of Cardiology, Leeds General Infirmary, United Kingdom (M.A., D.J., D.J.B.).
Background: Redo transcatheter aortic valve implantation (TAVI) is increasing as patients outlive their transcatheter heart valves (THVs) and present with bioprosthetic valve failure. The Lotus mechanically expanded THV has unique design characteristics, which have specific implications for Redo TAVI.
Methods: The design features of the Lotus valve and their relevance to Redo TAVI were reviewed.
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