Performance analysis of the transcatheter aortic valve implantation on blood flow hemodynamics: An optical imaging-based in vitro study.
aorta
hemodynamics
particle tracking velocimetry
transcatheter aortic valve implantation
turbulence
Journal
Artificial organs
ISSN: 1525-1594
Titre abrégé: Artif Organs
Pays: United States
ID NLM: 7802778
Informations de publication
Date de publication:
Oct 2019
Oct 2019
Historique:
received:
28
01
2019
revised:
11
04
2019
accepted:
23
05
2019
pubmed:
30
5
2019
medline:
23
2
2020
entrez:
30
5
2019
Statut:
ppublish
Résumé
Cardiac implants may have a strong influence on the hemodynamics of the circulatory system. In this study, we aimed at investigating the impact of transcatheter aortic valve implantation (TAVI) devices on blood flow patterns that develop in the ascending aorta under physiological flow conditions in vitro. For this purpose, a noninvasive optical measurement tool, three-dimensional particle tracking velocimetry (3D-PTV), was used in a realistic compliant silicone aortic model. The performance and the influence of two TAVIs and one surgical valve on the aortic flow were investigated. Our results showed that valve design and materials may have a distinct influence on relevant hemodynamic properties, namely kinetic energy, production of turbulence, and shear stresses in the ascending aorta. All properties varied considerably between the different valve models. We found that the total aortic regurgitation composed of the closing volume, transvalvular and paravalvular leakages varied for the three valves investigated. Furthermore, peak mean kinetic energy (MKE) ranged from 61 to 116 J/m
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
E282-E293Subventions
Organisme : Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
ID : CR23I3_159686
Informations de copyright
© 2019 International Center for Artificial Organs and Transplantation and Wiley Periodicals, Inc.
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