In mitral regurgitation the valve does not close properly. This causes blood to leak back (regurgitate) into the left atrium when the left ventricle contracts. Basically, the more open the valve remains, the more blood regurgitates, the more severe the problem.Mitral regurgitation can occur if the valve is weakened or damaged.n mitral regurgitation the valve does not close properly.
Aortic valve regurgitation is a problem with the aortic valve. The aortic valve allows blood to flow from the heart 's lower left chamber (ventricle) into the aorta and to the body. When you have aortic valve regurgitation, the aortic valve doesn't close as it should. With each heartbeat, some of the blood leaks back (regurgitates) through the aortic valve into the left ventricle. The body does not get enough blood, so the heart has to work harder to make up for it. Watch an animation of mitral valve regurgitation. A leaking mitral valve allows blood to flow in two directions during the contraction. Some blood flows from the ventricle through the aortic valve — as it should — and some blood flows back into the atrium. Aortic regurgitation is where blood leaks back through the aortic valve. This is because the valve does not close properly. With each heartbeat, more blood than usual enters the left ventricle and so it needs to work harder. Mild regurgitation may not cause symptoms. The aortic valve lies between the left ventricle and the aorta. When the left ventricle relaxes, the aortic valve closes and the mitral valve opens. This allows more blood into the ventricle, ready for the next heartbeat. Aortic regurgitation is sometimes called aortic incompetence or a leaky aortic valve. In aortic regurgitation the valve does not close properly Tricuspid regurgitation is a disorder in which the heart's tricuspid valve does not close properly, causing blood to flow backward (leak) into the right upper heart chamber (atrium) when the right lower heart chamber (ventricle) contracts. News & Features.  14. Mitral regurgitation is where blood leaks back through the mitral valve in the heart as the valve does not close properly. This increases the pressure in the left atrium and in the blood vessels coming from the lungs. This may lead to various problems and symptoms, depending on the severity of the leak. In mitral regurgitation the valve does not close properly. This causes blood to leak back (regurgitate) into the left atrium when the left ventricle contracts. Basically, the more open the valve remains, the more blood regurgitates, the more severe the problem. Mitral regurgitation can occur if the valve is weakened or damaged When a valve doesn't close tightly, blood can leak backward. This backward flow through a valve is called regurgitation. In aortic valve regurgitation, some blood leaks back into the left ventricle instead of flowing onward to the rest of your body after being pumped into the aorta. This forces the left ventricle to hold more blood, possibly causing it to enlarge and thicken. Mitral valve regurgitation means that one of the valves in your heart-the mitral valve-is letting blood leak backward into the heart. Heart valves work like one-way gates, helping blood flow in one direction between heart chambers or in and out of the heart. The mitral valve is on the left side of your heart. It lets blood flow from the upper to the lower heart chamber. See a picture of mitral valve regurgitation. When the mitral valve is damaged-for example, by an infection-it may no longer close tightly. This lets blood leak backward, or regurgitate, into the upper chamber. Your heart has to work harder to pump this extra blood. Small leaks are usually not a problem
http://www.webmd.com/heart-disease/tc/aortic-valve-regurgitation-overview http://www.heart.org/HEARTORG/Conditions/More/HeartValveProblemsandDisease/Problem-Mitral-Valve-Regurgitation_UCM_450612_Article.jsp http://patient.info/health/aortic-regurgitation-leaflet http://www.nytimes.com/health/guides/disease/tricuspid-regurgitation/overview.html http://patient.info/health/mitral-regurgitation-leaflet http://www.mayoclinic.org/diseases-conditions/aortic-valve-regurgitation/basics/causes/CON-20022523 http://www.webmd.com/heart-disease/tc/mitral-valve-regurgitation-overview
what is regurgitation through damaged valve