Results 241 to 250 of about 2,688,635 (294)

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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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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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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Mechanical Pulmonary Valve Replacement

Seminars in Thoracic and Cardiovascular Surgery: Pediatric Cardiac Surgery Annual, 2016
Although most valve operations performed annually address lesions of the aortic or mitral valves, the frequency of pulmonary valve replacement (PVR) is increasing because most patients with congenital heart disease are surviving into the adult years. The vast majority of patients, especially children that require PVR, obtain a tissue valve because of ...
John M, Stulak, Bassem N, Mora, Sameh M, Said, Hartzell V, Schaff, Joseph A, Dearani   +4 more
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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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Mechanism of Closure of the Aortic Valve

Nature, 1968
THE human aortic valve consists of three cusps made of relatively inelastic, muscle-free material about 0.15 mm thick. It opens and shuts about once a second, and withstands a pressure difference of 100 mm of mercury when closed. It usually functions for 70 yr without failure, and works so efficiently that very little blood is regurgitated at each ...
B J, Bellhouse, F H, Bellhouse
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Mechanical Heart Valves in Children

Scandinavian Journal of Thoracic and Cardiovascular Surgery, 1984
Longterm follow-up of 17 children, who consecutively underwent replacement of one cardiac valve with the Björk-Shiley prosthesis, is presented. The children's mean age was 8 years (range 4-12 years) and body weight 23.5 kg (range 15.0-38.4 kg) at the time of surgery 1970-80. Nine of the 17 operations (53%) were second-stage cardiac surgery.
A, Henze, D, Lindblom, V O, Björk
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Fluid Mechanics of Heart Valves

Annual Review of Biomedical Engineering, 2004
▪ Abstract  Valvular heart disease is a life-threatening disease that afflicts millions of people worldwide and leads to approximately 250,000 valve repairs and/or replacements each year. Malfunction of a native valve impairs its efficient fluid mechanic/hemodynamic performance.
Ajit P, Yoganathan, Zhaoming, He, S, Casey Jones   +2 more
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