Results 21 to 30 of about 191,200 (355)

Disrupted Slit-Robo signalling results in membranous ventricular septum defects and bicuspid aortic valves. [PDF]

open access: yes, 2015
The mesenchymal cushions lining the early embryonic heart undergo complex remodelling to form the membranous ventricular septum as well as the atrioventricular and semilunar valves in later life.
Andrews, WD   +3 more
core   +1 more source

21 Tesla MRI Microimaging of Rat Heart by Superparamagnetic Antimyoglobin Bound Nanoparticles [PDF]

open access: yes, 2008
Superparamagnetic iron-oxide bound antimyoglobin (SPIOM) characteristics were analyzed at different pH. After injecting SPIOM in heart, ex vivo magnetic resonance microimaging (MRM) technique was used to visualize microvasculature of rat heart including
Rakesh Sharma
core   +2 more sources

Dynamic Views of Structure and Function during Heart Morphogenesis [PDF]

open access: yes, 2006
Congenital heart defects remain the most common birth defect in humans, occurring in over 1% of live births. The high prevalence of cardiac malformations can be partially attributed to limited knowledge regarding the embryonic roots of the disease.
Forouhar, Arian Soroush
core   +1 more source

Materials and manufacturing perspectives in engineering heart valves: a review

open access: yesMaterials Today Bio, 2020
Valvular heart diseases (VHD) are a major health burden, affecting millions of people worldwide. The treatments for such diseases rely on medicine, valve repair, and artificial heart valves including mechanical and bioprosthetic valves.
F. Oveissi   +4 more
doaj   +1 more source

Fluid-structure interaction simulation of prosthetic aortic valves : comparison between immersed boundary and arbitrary Lagrangian-Eulerian techniques for the mesh representation [PDF]

open access: yes, 2016
In recent years the role of FSI (fluid-structure interaction) simulations in the analysis of the fluid-mechanics of heart valves is becoming more and more important, being able to capture the interaction between the blood and both the surrounding ...
AJ Gravel   +41 more
core   +8 more sources

Clinical performance of decellularized heart valves versus standard tissue conduits: a systematic review and meta-analysis

open access: yesJournal of Cardiothoracic Surgery, 2020
Background Valve replacement surgery is the definitive management strategy for patients with severe valvular disease. However, valvular conduits currently in clinical use are associated with significant limitations.
Steve W. F. R. Waqanivavalagi   +4 more
doaj   +1 more source

Recent progress in biomaterials for heart valve replacement: Structure, function, and biomimetic design

open access: yesView, 2021
Heart diseases caused by structure and function degradation is troubling millions of people all over the world. With the extension of human lifespan, the demand for heart valve replacement is rapidly increasing.
Ziyu Shao   +10 more
doaj   +1 more source

Modern view on calcification of xenogenic bioprosthetic heart valves and their anti-calcification treatment strategies

open access: yesТрансплантология (Москва), 2023
Aim. The aim of this review was to analyze publications describing studies focusing on the pathophysiological mechanisms of calcification of bioprosthetic heart valves, and to substantiate new and promising methods of calcification prevention for the ...
A. E. Kostyunin   +3 more
doaj   +1 more source

Comparative study of wall shear stress at the ascending aorta for different mechanical heart valve prostheses [PDF]

open access: yes, 2019
An experimental study is reported which investigates the wall shear stress (WSS) distribution in a transparent model of the human aorta comparing a bileaflet mechanical heart valve (BMHV) with a trileaflet mechanical heart valve (TMHV) in physiological ...
Bruecker, C., Li, Q.
core   +1 more source

HEART VALVE SURGERY

open access: yesThe Journal of Thoracic and Cardiovascular Surgery, 1965
SUMMARY This paper summarizes the experience in the treatment of a series of 1,370 cases of open-heart surgery. Of these, 964 valvular lesions and the associated pathologic lesion are analyzed. Details of correction and immediate and late results in the treatment of the following groups of lesions were studied: 74 cases of congenital aortic stenosis ...
Delmont Bittencourt   +2 more
openaire   +3 more sources

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