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Doctor insights on: Valves In Human Heart

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Why are pig heart valves suitable as replacements for damaged heart valves in humans?

Why are pig heart valves suitable as replacements for damaged heart valves in humans?

Tissue valves: The size of pig and cow valves approximates the size of human valves. They are chemically treated to decrease the likelihood of tissue rejection. The porcine valves are more commonly used than the bovine. ...Read more

Dr. Patricia Foster
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Valve (Definition)

A valve is a structure that regulates the direction of flow. The heart is a special kind of pump. It moves blood by squeezing and relaxing. There are 4 chambers and each chamber has a valve. This keeps blood from moving backwards when the heart squeezes. When a chamber squeezes it lets the blood move forward but when the chamber is relaxed it prevents the blood from ...Read more


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Home come pig hearts valves are used as replacements for damaged heart valves in humans?

Home come pig hearts valves are used as replacements for damaged heart valves in humans?

Tissue valves: We use beef, pig and human aortic valves as replacements in humans. Those three most closely simulate the size of the human valves. ...Read more

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Why is it that the human body does not reject bovine or pig heart valves. Can cells from different animals survive in humans?

Why is it that the human body does not reject bovine or pig heart valves.  Can cells from different animals survive in humans?

Medical technology: The valves are derived from pig or bovine but are treated in a laboratory to remove the antigens that would cause a reaction against them in a human body. Medical technology is amazing! ...Read more

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How long will you live after having a valve close in your heart?

How long will you live after having a valve close in your heart?

Heart disease: If you mean a stenotic valve can live years but generally need something done. Valves normally open and close, that's their job. When they can't open properly they cause outflow obstruction and increased heart work and need to be fixed. ...Read more

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What are the two AV valves in the heart? Where are they located?

What are the two AV valves in the heart? Where are they located?

The atrioventricular: valves are the mitral and tricuspid valves. true to their names, they are between the atria and ventricles. the mitral valve is between the left atrium and the left ventricle, and the tricuspid valve is between the right atrium and the right ventricle. ...Read more

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What is the difference between someone with 3 valves in their heart and someone with a normal heart?

What is the difference between someone with 3 valves in their heart and someone with a normal heart?

See below: are you referring to tricuspid atresia? This is a cyanotic congenital heart disease where the tricuspid valve is absent (technically three valves present), these patients often times have a single ventricle and require a complex surgery to address it. Normal individuals have 4 main valves - tricuspid, mitral, pulmonic and aortic valves. ...Read more

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What causes a leaky heart valve?

What causes a leaky heart valve?

Born with vs acquire: Leaky heart valves occur congenitally when some aspect of the valve leaflets/annulus/supporting structures is abnormal at birth. They can also be acquired as a result of changes in the heart structure/valve structure/aorta/lungs over time. Heart attacks can damage valves, as can infectious endocarditis, cardiomyopathy, enlarging aortic root, pulmonary disease causing pulmonary hypertension. ...Read more

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