Doctor insights on:
Is There A Major Difference Between Cow And Pig Heart Valves For Replacement
Not really: Both offer the advantage of not requiring "blood thinning" on a long term basis. Unlike a "mechanical" valve, cow and pig don't last longer than 7-12 years(with a few exceptions). Otherwise, the outcomes in both valves are generally the same and for all intents and purposes, either one is a reasonable choice in a patient who does not desire blood thinning. ...Read moreSee 1 more doctor answer
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: 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
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
Mitral valve: Outcomes with mitral valve replacement are not quite as good as aortic valve replacement but, in many cases, the mitral valve can be repaired which is always preferable to replacement and has excellent outcomes if it's an option. The tricuspid and pulmonic valves are lower risk and less frequently needed operations. ...Read more
Valve infection: Fungal infection of the valve - serious and debilitating. You would have to have an abnormal valve, infection of the blood stream (bactaremia) and/or be immunocompromised. Blood cultures can detect candida in the blood. If positive, the next step would be imaging tests of the heart valves. ...Read moreSee 1 more doctor answer
Depends: Trace to mild amount of leakage is considered normal in right heart valves. It is not uncommon to see trace amount of leakage on the left side in normal individuals. Leakage of the valves is also somewhat dynamic depending on pressures, can be seen at times but not all the time. ...Read moreSee 1 more doctor answer
Numerous: An infection of the heart valves, known as endocarditis, is a very serious disorder. Symptoms usually stem from infection in the blood stream and include fever, chills, possible low blood pressure or even shock, heart failure, shortness of breath, and may include severe damage to the infected valve causing severe leakage of the valve, requiring emergency valve replacement surgery. ...Read more
Endocarditis: When a bacteria gets in the bloodstream, there is a chance of attaching to a heart valve. This is called endocarditis. If this happens, the bacteria can grow, causing lesions called vegetations to appear which can break off and plug small blood vessels in the hand, foot, or brain. The bacterial growth can also cause the valve to leak. If this is significant, valve replacement may be needed. ...Read moreSee 1 more doctor answer
Nope: Sorry- we haven't found any substances yet that can reverse that process. Statins looked promising at one point but a couple of key trials ended up being negative. That said, at 21 you shouldn't have thick heart vavlves. Consider an evaluation for rheumatic fever and certain drug effects if you do. ...Read moreSee 1 more doctor answer
Heart valves: It is difficult to answer this question and it depends on your symptoms . If your symptoms are minimal the you can safely wait, however if you are suffering debilitating symptoms then you need the repair done as soon as possible ...Read more
Birth defect: This is called "myxomatous degeneration" and is not acquired. You're born with it. ...Read more
Can you explain how the heart valves opening/closing is synchronized with the heart's pacemaker firing?
Passive valves: The heart valves are passive mechanisms. They open as blood flows through them. When blood starts to backflow, they slam shut, causing the sounds you hear when you listen to your heart. So long as the valves are functioning properly, the synchronization is all done by the four chambers, with the valves just opening and closing automatically. ...Read moreSee 1 more doctor answer
How long after a cardiograph will it be for my heart opereation? A bypass and two heart valves replaced plz
Dr. Says i have trace regurgitation in 3 heart valves. Only recommending yearly echos to check on it. Is this normal im otherwise healthy?
Just a trace.: Trace regurgitation is usually nothing of immediate concern - it wouldn't cause any symptoms and may just be reflective of the way your valves open and close normally and thereby may never progress beyond trace. Yearly 2D echo is recommended to make sure trace regurgitation doesn't become mild, then moderate and then severe, but this doesn't always happen. ...Read more
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