ArticleThe Journal of thoracic and cardiovascular surgery2020
A turbulence in vitro assessment of On-X and St Jude Medical prostheses.
Article in The Journal of thoracic and cardiovascular surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 29 citations in OpenAlex.
- Application of low-intensity anticoagulation after On-X mechanical aortic valve replacement.Journal of cardiothoracic surgery · 2025Trial
- 4D-Flow MRI and Vector Ultrasound in the In-Vitro Evaluation of Surgical Aortic Heart Valves - a Pilot Study.Journal of cardiovascular translational research · 2025Article
- Recommendations for defining disturbed flow as laminar, transitional, or turbulent in assays of hemostasis and thrombosis: communication from the ISTH SSC Subcommittee on Biorheology.Journal of thrombosis and haemostasis : JTH · 2025Review
- Rethinking mechanical heart valves in the aortic position: new paradigms in design and testing.Frontiers in cardiovascular medicine · 2024Review
- Valvular and ascending aortic hemodynamics of the On-X aortic valved conduit by same-day echocardiography and 4D flow MRI.Frontiers in cardiovascular medicine · 2023Article
- Comparison of performance of self-expanding and balloon-expandable transcatheter aortic valves.JTCVS open · 2022Article
- Article
- Permanent pacemaker implantation after On-X surgical aortic valve replacement: SWEDEHEART observational study.BMJ open · 2021Observational
- Atrial and ventricular flows across a transcatheter mitral valve.Interactive cardiovascular and thoracic surgery · 2021Article
- The hemodynamics of transcatheter aortic valves in transcatheter aortic valves.The Journal of thoracic and cardiovascular surgery · 2021Article
- Impact of superhydrophobicity on the fluid dynamics of a bileaflet mechanical heart valve.Journal of the mechanical behavior of biomedical materials · 2020Article
- Development of Tissue Engineered Heart Valves for Percutaneous Transcatheter Delivery in a Fetal Ovine Model.JACC. Basic to translational science · 2020Article
- In-vitro characterization of self-expandable textile transcatheter aortic valves.Journal of the mechanical behavior of biomedical materials · 2020Article
- In vitro hemodynamic assessment of a novel polymeric transcatheter aortic valve.Journal of the mechanical behavior of biomedical materials · 2019Article
- Modeling of the Instantaneous Transvalvular Pressure Gradient in Aortic Stenosis.Annals of biomedical engineering · 2019Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
Abstract
objectiveThe objective of this study was to investigate and compare the hemodynamic and turbulence characteristics upon implantation of St Jude Medical (SJM) (St Jude Medical, St Paul, Minn) and On-X (On-X Life Technologies, Kennesaw, Ga) bileaflet mechanical valves. Both valves are considered highly successful bileaflet mechanical valves characterized by good clinical outcomes despite their numerous design differences. Although thromboembolism remains the main disadvantage of bileaflet mechanical valves, On-X valves have been shown to need less anticoagulation therapy.
methodsHemodynamic assessment of a 23-mm On-X bileaflet mechanical valve and a 23-mm bileaflet SJM valve implanted in an aortic root was performed under pulsatile physiologic conditions. Time-resolved and phase-locked particle-image-velocimetry images and high-speed imaging data were acquired. Pressure gradients, effective orifice areas, dimensionless area index, leaflet position tracking, velocity, and principal Reynolds shear stress were calculated.
resultsPressure gradient for the On-X valve was 4.15 ± 0.099 mm Hg versus 4.75 ± 0.048 mm Hg for SJM (P < .001). Effective orifice area for the On-X valve was 2.61 ± 0.045 cm
conclusionsThis study shows that despite the design differences that characterize the On-X valve, the hemodynamic and turbulence parameters were not necessarily improved compared with SJM.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.