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Transplantability of Heart Valves
Archives of Surgery, 1962The majority of unresolved problems in the present era of heart surgery are biologic rather than technical. The advances made in total body perfusion, the improvement in the protection of the myocardium in artificially induced cardiac arrest, etc., have made it possible to deal quite successfully with several types of congenital and acquired heart ...
Francis Robicsek +3 more
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Primary Care: Clinics in Office Practice, 2013
Heart valve disease is often characterized by a prolonged asymptomatic period that lasts for years and presents primary care physicians with an opportunity to detect disease before irreversible heart failure or other cardiac complications develop. Acute valvular disease can masquerade as respiratory illness or present with nonspecific systemic symptoms,
David S. Bach, Adam S. Helms
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Heart valve disease is often characterized by a prolonged asymptomatic period that lasts for years and presents primary care physicians with an opportunity to detect disease before irreversible heart failure or other cardiac complications develop. Acute valvular disease can masquerade as respiratory illness or present with nonspecific systemic symptoms,
David S. Bach, Adam S. Helms
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Emergency Medicine Clinics of North America, 1994
There are tens of thousands of patients with prosthetic heart valves implanted today, and although complications are infrequent, this may not hold true as patients live longer with prosthetic valves and as more and newer valves are implanted. A familiarity with the management of such patients will aid the emergency physician in the evaluation of this ...
Lou Anne Wellford, A. Landon Wellford
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There are tens of thousands of patients with prosthetic heart valves implanted today, and although complications are infrequent, this may not hold true as patients live longer with prosthetic valves and as more and newer valves are implanted. A familiarity with the management of such patients will aid the emergency physician in the evaluation of this ...
Lou Anne Wellford, A. Landon Wellford
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2005
The valves of the heart cannot regenerate spontaneously. Therefore, heart valve disease generally necessitates surgical repair or replacement of the diseased tissue by mechanical or bioprosthetic valve substitutes in order to avoid potentially fatal cardiac or systemic consequences.
Frederick J. Schoen +2 more
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The valves of the heart cannot regenerate spontaneously. Therefore, heart valve disease generally necessitates surgical repair or replacement of the diseased tissue by mechanical or bioprosthetic valve substitutes in order to avoid potentially fatal cardiac or systemic consequences.
Frederick J. Schoen +2 more
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New England Journal of Medicine, 1996
Since the 1950s more than 80 models of prosthetic heart valves have been developed and used. More than 60,000 valve replacements are performed annually in the United States. Prosthetic heart valves may be mechanical or bioprosthetic. Mechanical valves, which are composed primarily of metal or carbon alloys, are classified according to their structure ...
Wanpen Vongpatanasin +2 more
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Since the 1950s more than 80 models of prosthetic heart valves have been developed and used. More than 60,000 valve replacements are performed annually in the United States. Prosthetic heart valves may be mechanical or bioprosthetic. Mechanical valves, which are composed primarily of metal or carbon alloys, are classified according to their structure ...
Wanpen Vongpatanasin +2 more
openaire +3 more sources
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1977
A hydroxylysine-rich type I collagen has been isolated from pepsin-digested porcine heart valve. The ratio of alpha1 to alpha2 in the isolated molecule was 2:1. The component alpha chains exhibited unusual chromatographic behavior in comparison to corresponding chains from human dermis and lathyritic rat skin collagen.
David Collins +3 more
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A hydroxylysine-rich type I collagen has been isolated from pepsin-digested porcine heart valve. The ratio of alpha1 to alpha2 in the isolated molecule was 2:1. The component alpha chains exhibited unusual chromatographic behavior in comparison to corresponding chains from human dermis and lathyritic rat skin collagen.
David Collins +3 more
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Current Opinion in Cardiology, 1993
Progress in valve repair and replacement continued over the past year. Aortic valve repair for aortic insufficiency appears promising, and aortic decalcification may still be a useful alternative in certain cases of aortic stenosis. Mitral valve repair, well accepted for myxomatous valves, presents a challenge in ischemic disease.
Christopher M. Feindel, Tirone E. David
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Progress in valve repair and replacement continued over the past year. Aortic valve repair for aortic insufficiency appears promising, and aortic decalcification may still be a useful alternative in certain cases of aortic stenosis. Mitral valve repair, well accepted for myxomatous valves, presents a challenge in ischemic disease.
Christopher M. Feindel, Tirone E. David
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2012
Publisher Summary A prosthetic heart valve is a medical device that replaces a diseased native valve and that enables blood flow in the cardiac chambers to be regulated. A mechanical valve consists of an occluder, an occluder retention mechanism, and a sewing cuff. A typical tissue valve consists of porcine or bovine tissue, a stent, and a sewing cuff.
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Publisher Summary A prosthetic heart valve is a medical device that replaces a diseased native valve and that enables blood flow in the cardiac chambers to be regulated. A mechanical valve consists of an occluder, an occluder retention mechanism, and a sewing cuff. A typical tissue valve consists of porcine or bovine tissue, a stent, and a sewing cuff.
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, 2009 This chapter was designed to provide the reader with a brief overview of the current surgical treatment options for heart valve disease. Major topics of discussion are: (1) development of prosthetic valve replacements; (2) current issues with valve replacement; (3) major valvular diseases that affect humans in the Western world; and (4) recent advances
Ranjit John, Kenneth Liao
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Surgery (Oxford), 2007
Abstract The number of heart valve replacement procedures has increased over the past four decades, with >200,000 done worldwide every year. Various valve substitutes are available, and are broadly divided into biological and mechanical prostheses. Choice is dictated by multiple factors, including longevity of the valve substitute as well as patient ...
Yasir Abu-Omar +3 more
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Abstract The number of heart valve replacement procedures has increased over the past four decades, with >200,000 done worldwide every year. Various valve substitutes are available, and are broadly divided into biological and mechanical prostheses. Choice is dictated by multiple factors, including longevity of the valve substitute as well as patient ...
Yasir Abu-Omar +3 more
openaire +2 more sources