Results 151 to 160 of about 115,388 (336)

Image-based immersed boundary model of the aortic root [PDF]

open access: yesarXiv, 2017
Each year, approximately 300,000 heart valve repair or replacement procedures are performed worldwide, including approximately 70,000 aortic valve replacement surgeries in the United States alone. This paper describes progress in constructing anatomically and physiologically realistic immersed boundary (IB) models of the dynamics of the aortic root and
arxiv  

Medical Device Safety Act of 2009: Hearing Before the Subcomm. on Health of the H. Comm. on Energy and Commerce, 111th Cong., May 12, 2009 (Statement of David C. Vladeck, Prof. of Law, Geo. U. L. Center) [PDF]

open access: yes, 2009
I start with a brief history of the Medical Device Amendments of 1976 and explain why that history demonstrates that Congress quite clearly intended to preserve state liability law, not wipe it away.
Vladeck, David C.
core   +1 more source

Association of Aortic Root and Valve Morphology With De Novo Aortic Valve Regurgitation After Implantation of Left Ventricular Assist Device

open access: yesArtificial Organs, EarlyView.
Large preoperative aortic virtual basal ring diameter to geometric height ratio may be a novel risk factor for de novo aortic insufficiency after durable LVAD implantation and assist in determining surgical indications for concomitant aortic valve procedures with LVAD implantation.
Takashi Murakami   +8 more
wiley   +1 more source

Purinergic ecto-enzymes in human and ovine aortic valves: indicators of bacterial nanocellulose scaffold cellularization

open access: yesArtificial Cells, Nanomedicine, and Biotechnology
Purinergic signalling pathways play a vital role in the biological functions of the aortic valve (AV) through nucleotide and adenosine-dependent receptor effects.
Barbara Kutryb-Zając   +9 more
doaj   +1 more source

Vitamin D Deficiency and Driveline Infections in Patients With Left Ventricular Assist Devices

open access: yesArtificial Organs, EarlyView.
Pre‐operative vitamin D deficiency was associated with a three‐fold increased risk of driveline infection in left ventricular assist device recipients. This potentially modifiable risk factor could be readily addressed through pre‐implant screening and supplementation, potentially reducing the burden of this common complication.
Wesley A. Borman   +4 more
wiley   +1 more source

Avaliação clínica e ecocardiográfica de pacientes submetidos a implante de bioprótese mitral com preservação da valva natural Clinical and echocardiography evaluation of patients submitted to mitral bioprosthesis implantations with preservation of their native valves

open access: yesBrazilian Journal of Cardiovascular Surgery, 1990
O objetivo deste trabalho é apresentar os resultados pós-operatórios preliminares de 16 pacientes submetidos a implante de bioprótese valvular de pericárdio bovino com preservação de suas valvas naturais, operados seqüencialmente no período de março a ...
Altamiro Ribeiro Dias   +10 more
doaj  

Fluid-structure interaction simulations of venous valves: a monolithic ALE method for large structural displacements [PDF]

open access: yesarXiv, 2018
Venous valves are bicuspidal valves that ensure that blood in veins only flows back to the heart. To prevent retrograde blood flow, the two intraluminal leaflets meet in the center of the vein and occlude the vessel. In fluid-structure interaction (FSI) simulations of venous valves, the large structural displacements may lead to mesh deteriorations and
arxiv  

Impact of Frailty in Patients With Continuous‐Flow Left Ventricular Assist Device Therapy in End‐Stage Heart Failure: A Systematic Review and Meta‐Analysis

open access: yesArtificial Organs, EarlyView.
Frailty significantly impacts clinical outcomes in LVAD recipients. This systematic review and meta‐analysis reveal that frail patients experience higher long‐term mortality but comparable short‐term mortality, hospital stay, and complication rates to non‐frail patients.
Christos Costa   +15 more
wiley   +1 more source

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