ArticleJTCVS open2022
Comparison of performance of self-expanding and balloon-expandable transcatheter aortic valves.
Article in JTCVS open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Prediction of Underexpansion Following Transcatheter Aortic Valve Implantation and Efficacy of Balloon Postdilatation.Structural heart : the journal of the Heart Team · 2026Article
- Insights from the assessment of anatomical valve orifice area after transcatheter aortic valve implantation using transesophageal echocardiography.Cardiovascular intervention and therapeutics · 2026Article
- Transcatheter Aortic Valve Implantation in Cardiogenic Shock: Current Evidence, Clinical Challenges, and Future Directions.Journal of clinical medicine · 2025Review
- From invasive gradients to pressure recovery: rethinking long-standing paradigms.EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology · 2025Article
- Comparison of invasive and non-invasive gradients before and after TAVI and their implications on clinical outcomes.Cardiovascular intervention and therapeutics · 2025Article
- Comparison of a novel self-expanding transcatheter heart valve with two established devices for treatment of degenerated surgical aortic bioprostheses.Clinical research in cardiology : official journal of the German Cardiac Society · 2024Article
- Differences in blood flow dynamics between balloon- and self-expandable valves in patients with aortic stenosis undergoing transcatheter aortic valve replacement.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2023Article
- Comparison of self- and balloon-expandable valves in patients with dilatated ascending aorta undergoing transcatheter aortic valve replacement.Journal of thoracic disease · 2023Article
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objective: To evaluate the flow dynamics of self-expanding and balloon-expandable transcatheter aortic valves pertaining to turbulence and pressure recovery. Transcatheter aortic valves are characterized by different designs that have different valve performance and outcomes. Methods: Assessment of transcatheter aortic valves was performed using self-expanding devices (26-mm Evolut [Medtronic], 23-mm Allegra [New Valve Technologies], and small Acurate neo [Boston Scientific]) and a balloon-expandable device (23-mm Sapien 3 [Edwards Lifesciences]). Particle image velocimetry assessed the flow downstream. A Millar catheter was used for pressure recovery calculation. Velocity, Reynolds shear stresses, viscous shear stress, and pressure gradients were calculated. Results: The maximal velocity at peak systole obtained with the Evolut R, Sapien 3, Acurate neo, and Allegra was 2.12 ± 0.19 m/sec, 2.41 ± 0.06 m/sec, 2.99 ± 0.10 m/sec, and 2.45 ± 0.08 m/sec, respectively ( Conclusions: Flow dynamics downstream of different transcatheter aortic valves vary significantly depending on the valve type, despite not having a general trend depending on whether or not valves are self-expanding or balloon-expandable. Deployment design did not have an influence on flow dynamics.
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