ArticleFrontiers in cardiovascular medicine2021
Characterization of Turbulent Flow Behind a Transcatheter Aortic Valve in Different Implantation Positions.
Article in Frontiers in cardiovascular medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Understanding the mechanisms of TAVI durability through computational modelling: a multidisciplinary review.European heart journal. Digital health · 2026Review
- Single-Center Experience with Venus-P Self-expanding Pulmonary Valve: Insights on Valve Sizing and Procedural Techniques.Pediatric cardiology · 2026Article
- DurAVR - a novel biomimetic balloon-expandable transcatheter valve for TAVI, valve-in-valve TAVI and redo-TAVI.EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology · 2025Article
- Influence of valve size on the hemodynamic performance of a tissue-engineered valved conduit in pulmonary position.Frontiers in bioengineering and biotechnology · 2025Article
- Comparison of Hemodynamic Performance, Three-Dimensional Flow Fields, and Turbulence Levels for Three Different Heart Valves at Three Different Hemodynamic Conditions.Annals of biomedical engineering · 2024Article
- In vitro investigation of the blood flow downstream of a 3D-printed aortic valve.Scientific reports · 2024Article
- Altered blood flow due to larger aortic diameters in patients with transcatheter heart valve thrombosis.APL bioengineering · 2023Article
- Quantitative evaluation of aortic valve regurgitation in 4D flow cardiac magnetic resonance: at which level should we measure?BMC medical imaging · 2022Article
- Mid-term outcomes of patients with Lotus and Evolut transcatheter valves.Postepy w kardiologii interwencyjnej = Advances in interventional cardiology · 2022Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The development of turbulence after transcatheter aortic valve (TAV) implantation may have detrimental effects on the long-term performance and durability of the valves. The characterization of turbulent flow generated after TAV implantation can provide fundamental insights to enhance implantation techniques. A self-expandable TAV was tested in a pulse replicator and the three-dimensional flow field was extracted by means of tomographic particle image velocimetry. The valve was fixed inside a silicone phantom mimicking the aortic root and the flow field was studied for two different supra-annular axial positions at peak systole. Fluctuating velocities and turbulent kinetic energy were compared between the two implantations. Velocity spectra were derived at different spatial positions in the turbulent wakes to characterize the turbulent flow. The valve presented similar overall flow topology but approximately 8% higher turbulent intensity in the lower implantation. In this configuration, axial views of the valve revealed smaller opening area and more corrugated leaflets during systole, as well as more accentuated pinwheeling during diastole. The difference arose from a lower degree of expansion of the TAV's stent inside the aortic lumen. These results suggest that the degree of expansion of the TAV
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