Results 251 to 260 of about 562,918 (320)

Mechanical Heart Valve Cavitation: Valve Specific Parameters

The International Journal of Artificial Organs, 2004
Several aspects of mechanical heart valve cavitation, in particular of “severe” vapor cavitation, have been investigated in order to describe the phenomenon of cavitation itself and to classify various mechanical heart valves with respect to their tendency to cavitation. Furthermore, following the results of the measurements, a model for determination
M J, Eichler, H M, Reul
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Tissue Valve Degeneration and Mechanical Valve Failure

Current Treatment Options in Cardiovascular Medicine, 2019
The management of valvular heart disease has been dramatically influenced by recent evolutions in biomedical technology and surgical practice. With an aging population worldwide and accompanying increase in the prevalence of surgical valve disease, an understanding of prosthetic valve behavior and durability is essential for proper patient selection ...
Andrew C W, Baldwin, George, Tolis
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Tricuspid Valve Replacement: Bioprosthetic or Mechanical Valve?

Asian Cardiovascular and Thoracic Annals, 2004
Significant morbidity and mortality is associated with tricuspid valve replacement, and controversy still exists as to the ideal prosthesis in this position. This study aimed to identify the risk factors for low cardiac output and mortality, and whether bioprosthetic or mechanical valves perform better in the tricuspid position.
Neville A G, Solomon, Remy C H, Lim, Parma, Nand, Kenneth J, Graham   +3 more
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Patents and Heart Valve Surgery - I: Mechanical Valves

Recent Patents on Cardiovascular Drug Discovery, 2013
Valvular heart disease, inherited or acquired, affects more than 5 million Americans yearly. Whereas medical treatment is beneficial in the initial stages of valvular heart disease, surgical correction provides symptomatic relief and long-term survival benefits.
F.H. Cheema, N. Hussain, A. P. Kossar, G. Polvani   +3 more
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Mitral valve replacement with mechanical or bioprosthetic valve

Multimedia Manual of Cardio-Thoracic Surgery, 2005
A presentation on the technique of mitral valve replacement is shown: exposure and excision of the diseased mitral valve is demonstrated along with the use of sub-annular and supra-annular interrupted suture techniques for securing biological and mechanical mitral prostheses. A brief overview of the literature is presented.
David, Wheatley, Malcolm, Will
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Mechanical heart valve cavitation

Expert Review of Medical Devices, 2004
Cavitation was first directly related to mechanical heart valves in the mid 1980s after a series of valve failures observed with the Edwards-Duromedics valve. The damages observed indicated that cavitation could be responsible. Later, several in vitro studies visualized the bubble formation and collapse of cavitation at mechanical heart valves.
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Mechanical Prosthetic Valves

2020
Mechanical valves offer excellent durability and hemodynamics at both the aortic and mitral position but require lifelong anticoagulation. The majority of mechanical valves utilized today are bileaflet valves composed of pyrolytic carbon, and most of the newer generation valves are designed to reduce thrombogenicity and improve hemodynamics.
Matthew C. Henn, Marc R. Moon
openaire   +1 more source

Successful retrieval of a broken PentaRay catheter spine in a patient with mechanic mitral valve prosthesis

Journal of interventional cardiac electrophysiology, 2021
João Lopes, P. Sousa, L. Elvas, Lino Gonçalves   +3 more
semanticscholar   +1 more source

Stuck Mechanical Valve in Pregnancy

Journal of Cardiac Surgery, 2008
Mechanical heart valve thrombosis during pregnancy is a challenging condition. We present a pregnant patient with stuck mechanical mitral valve. During the 36th week of pregnancy, she was admitted to our emergency clinic because of aggravated dyspnea, tachypnea, and cyanosis.
Askin A, Korkmaz, Murat, Yuce, Feride, Korkmaz, Fisun, Gulcan, Mustafa, Guden   +4 more
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Evolution of mechanical heart valves

The Annals of Thoracic Surgery, 2000
The need for prosthetic heart valves was long recognized but seemed an impossible dream before 1952 when Dr Charles Hufnagel clinically introduced a ball valve that he placed into the descending thoracic aorta for treatment of aortic valvular insufficiency.
R A, DeWall, N, Qasim, L, Carr
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