Doctor insights on:
Valves In Human Heart
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
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
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
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
Valves: aortic,mitral, pulmonary and tricuspidGet a more detailed answer ›
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
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 moreSee 1 more doctor answer
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