Results 41 to 50 of about 115,388 (336)

Modeling the Mitral Valve [PDF]

open access: yesarXiv, 2022
This thesis is concerned with modeling and simulation of the mitral valve, one of the four valves in the human heart. The valve is composed of leaflets attached to a ring, the free edges of which are supported by a system of chordae, which themselves are anchored to muscles inside the heart.
arxiv  

Artificial Heart Valves with Balanced Charged Networks Exhibiting Anti-Calcification Properties.

open access: yesACS Applied Bio Materials, 2019
Currently, the only treatment for moderate and severe aortic valve calcification disease is valve replacement. The clinical use of bioprosthetic heart valves (BHVs) is limited because of device failure caused by structural degeneration, such as the ...
Feng Guo   +5 more
semanticscholar   +1 more source

The optimal intensity of vitamin k antagonists in patients with mechanical heart valves A meta-analysis [PDF]

open access: yes, 2003
ObjectivesThe purpose of this study was to compare two different intensities of vitamin K antagonists (VKA) among patients with mechanical heart valves using meta-analytic techniques.BackgroundPatients with mechanical heart valves are at increased risk ...
Büller, Harry R.   +6 more
core   +8 more sources

THE ROLE OF ANTICOAGULATION THERAPY IN PATIENTS WITH PROSTHETIC HEART VALVES

open access: yesKlinicist, 2016
Cardiac surgery is the only radical method of treatment of valvular defects (congenital or acquired): valve preservation procedures or prosthetics operations.
N. A. Shostak   +4 more
doaj   +1 more source

Adherence of Staphylococcus aureus to Dyneema Purity® Patches and to Clinically Used Cardiovascular Prostheses. [PDF]

open access: yesPLoS ONE, 2016
Various materials that are used for vascular and heart valve prostheses carry drawbacks: some require anticoagulant drugs or have moderate durability; others are not suitable for endovascular treatment.
Amir Basir   +5 more
doaj   +1 more source

A Computational Framework for Atrioventricular Valve Modeling using Open-Source Software [PDF]

open access: yesarXiv, 2022
Atrioventricular valve regurgitation is a significant cause of morbidity and mortality in patients with acquired and congenital cardiac valve disease. Image-derived computational modeling of atrioventricular valves has advanced substantially over the last decade and holds particular promise to inform valve repair in small and heterogeneous populations ...
arxiv  

Effects of stenotic aortic valve on the left heart hemodynamics: a fluid-structure-electrophysiology approach [PDF]

open access: yesarXiv, 2021
The aortic valve is a three-leaflet passive structure that, driven by pressure differences between the left ventricle and the aorta, opens and closes during the heartbeat to ensure the correct stream direction and flow rate. In elderly individuals or because of particular pathologies, the valve leaflets can stiffen thus impairing the valve functioning ...
arxiv  

Hemodynamics of a Bileaflet Mechanical Heart Valve with Different Levels of Dysfunction [PDF]

open access: yesVolume 2 Issue 5 - 2017, 2017
Heart disease is one of leading causes of mortality worldwide. Healthy heart valves are key for proper heart function. When these valves dysfunction, a replacement is often necessary in severe cases. The current study presents an investigation of the pulsatile blood flow through a bileaflet mechanical heart valve (BMHV) where one leaflet is healthy and
arxiv   +1 more source

Design and Fabrication of Three-Dimensional Scaffolds for Tissue Engineering of Human Heart Valves [PDF]

open access: yes, 2009
We developed a new fabrication technique for 3-dimensional scaffolds for tissue engineering of human heart valve tissue. A human aortic homograft was scanned with an X-ray computer tomograph.
Fu, P.   +8 more
core   +1 more source

The Use of Biological Heart Valves.

open access: yesDeutsches Ärzteblatt International, 2019
BACKGROUND Biological heart-valve prostheses have undergone continuous devel- opment up to the present, and technological advances have been made in catheter- assisted valve systems (transcatheter aortic valve implantation, TAVI) and minimally invasive ...
S. Kueri   +5 more
semanticscholar   +1 more source

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