Results 1 to 10 of about 2,776,216 (316)

On the valves of the heart [PDF]

Abstracts of the Papers Communicated to the Royal Society of London
The paper contains observations upon the structure and connections of the auriculo-ventricular and arterial valves of the human heart, which the author thinks will assist in explaining their nature and functions. The relation of the “four orifices” in the base of the heart is examined, and it is shown that the aortic and left auriculo-ventricular ...
William S. Savory
openalex   +3 more sources

Fabrication and In Vitro Characterization of a Tissue Engineered PCL-PLLA Heart Valve. [PDF]

Scientific Reports, 2018
Heart valve diseases are among the leading causes of cardiac failure around the globe. Nearly 90,000 heart valve replacements occur in the USA annually. Currently, available options for heart valve replacement include bioprosthetic and mechanical valves,
El Hajj, Fatima, Hasan, Anwarul, Marei, Hany Elsayed, Soliman, Sherif, Tseng, Yuan-Tsan, Yalcin, Huseyin C   +5 more
core   +2 more sources

Prediction of Turbulent Shear Stresses through Dysfunctional Bileaflet Mechanical Heart Valves using Computational Fluid Dynamics [PDF]

arXiv, 2018
There are more than 300,000 heart valves implanted annually worldwide with about 50% of them being mechanical valves. The heart valve replacement is often a common treatment for severe valvular disease. However, valves may dysfunction leading to adverse hemodynamic conditions.
Gamage, Peshala T., Khalili, Fardin, Mansy, Hansen   +2 more
arxiv   +3 more sources

Heart valve service provision in the United Kingdom and the effect of the COVID 19 pandemic; improved but must do better. A British Heart Valve Society national survey [PDF]

Echo Research and Practice
Background Outpatient care for patients with heart valve disease (HVD) is best provided by valve clinics delivered by specialists. Modern day practice in the United Kingdom (UK) is currently poorly understood and has not been evaluated for nearly a ...
R. Mohindra, L. E. Dobson, D. Schlosshan, P. Khan, B. Campbell, M. Garbi, B. Chambers, J. B. Chambers   +7 more
doaj   +2 more sources

Spatially Heterogeneous Tubular Scaffolds for In Situ Heart Valve Tissue Engineering Using Melt Electrowriting

Advanced Functional Materials, 2022
Heart valve tissue engineering (HVTE) aims to provide living autologous heart valve implants endowed with regenerative capabilities and life‐long durability.
Navid T. Saidy, A. Fernández‐Colino, B. Heidari, Ross Kent, Michael Vernon, Onur Bas, Shane Mulderrig, A. Lubig, J. Rodríguez‐Cabello, B. Doyle, D. Hutmacher, Elena M. De‐Juan‐Pardo, P. Mela   +12 more
semanticscholar   +1 more source

Natural Polymers in Heart Valve Tissue Engineering: Strategies, Advances and Challenges

Biomedicines, 2022
In the history of biomedicine and biomedical devices, heart valve manufacturing techniques have undergone a spectacular evolution. However, important limitations in the development and use of these devices are known and heart valve tissue engineering has
D. Ciolacu, Raluca Nicu, F. Ciolacu
semanticscholar   +1 more source

Redo aortic root surgery post-Ross procedure

Frontiers in Cardiovascular Medicine, 2023
BackgroundDespite numerous advantages of the Ross procedure, it presents a risk of late autograft and right ventricular outflow tract conduit failure. This study aimed to analyze the outcomes of autograft dysfunction reoperations using autograft-sparing ...
Alexander Bogachev-Prokophiev, Ravil Sharifulin, Igor Demin, Anastasiia Karadzha, Sergey Zheleznev, Alexander Karaskov, Alexander Afanasyev, Alexey Pivkin, Mikhail Ovcharov, Anton Zalesov, Ivan Murashov, Bashir Tsaroev, Alexander Chernyavsky   +12 more
doaj   +1 more source

Rheumatic Heart Valve Disease Pathophysiology and Underlying Mechanisms

Frontiers in Cardiovascular Medicine, 2021
Rheumatic heart valve disease (RHVD) is a post-infectious sequel of acute rheumatic fever resulting from an abnormal immune response to a streptococcal pharyngitis that triggers valvular damage.
Livia S A Passos, M. C. Nunes, E. Aikawa
semanticscholar   +1 more source

Outcomes in Patients With Obstructive Hypertrophic Cardiomyopathy and Concomitant Aortic Stenosis Undergoing Surgical Myectomy and Aortic Valve Replacement

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background Hypertrophic cardiomyopathy (HCM) and aortic stenosis can cause obstruction to the flow of blood out of the left ventricular outflow tract into the aorta, with obstructive HCM resulting in dynamic left ventricular outflow tract obstruction and
Milind Y. Desai, Alaa Alashi, Zoran B. Popovic, Per Wierup, Brian P. Griffin, Maran Thamilarasan, Douglas Johnston, Lars G. Svensson, Harry M. Lever, Nicholas G. Smedira   +9 more
doaj   +1 more source

Impact of the Commercial Introduction of Transcatheter Mitral Valve Repair on Mitral Surgical Practice

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020
Background There has been uncertainty regarding the effect of transcatheter mitral valve repair (TMVr) with MitraClip on cardiac surgical practice. Our aim was to examine the impact of the commercial introduction of TMVr to a comprehensive mitral program.
Hiroki Niikura, Mario Gössl, Richard Bae, Benjamin Sun, Judah Askew, Kevin Harris, Karol Mudy, Craig Strauss, Larissa Stanberry, Andrea Sweeney, Paul Sorajja   +10 more
doaj   +1 more source