It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium.
In this article. Mitral valve prolapse is a common cause of a heart murmur caused by a leaky heart valve. Most cases of mitral valve prolapse are not serious and only need to be monitored. Mitral valve prolapse is associated with many other symptoms and conditions. In mitral valve prolapse, the valve slips backward due to the abnormal size of or damage to the mitral valve tissues. For most people with mitral valve prolapse, the cause is unknown. Mitral valve disease refers to conditions of the mitral valve. Located between the left chambers of your heart, this valve works to keep blood flowing properly. When your mitral valve does not work properly, you can experience symptoms such as fatigue and shortness of breath because the defective valve is allowing blood to flow backwards into the left atrium. Mitral stenosis, mitral regurgitation and mitral valve prolapse are all defects of the heart's mitral valve. The heart is a two-sided pump with four chambers. Four valves control the flow of blood through the heart. Problems with the mitral valve include: 1  Mitral stenosis: The leaflets are fused, are too thick, or there is some other structural defect in the valve leaflets. 2  Sometimes, mitral stenosis occurs as a result of surgery to repair an abnormal Symptoms, which in some cases may be related to leaking of the mitral valve, can include: 1  Chest pain (not caused by coronary artery disease or a heart attack). 2  Dizziness. 3  Fatigue. 4  Sensation of feeling the heart beat (palpitations). 5  Shortness of breath with activity or when lying flat (orthopnea).  It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.  The mitral valve is the most complex of the heart’s 4 valves and is the one most commonly associated with disease. There are 3 main conditions that affect the valve: Obstruction (stenosis), leakage (regurgitation), and bulging backward during valve closure (prolapse).  1 Mitral valve prolapse: When the valve is closed, the leaflets bulge abnormally up, into the atrium. 2  Sometimes mitral valve prolapse causes mitral valve regurgitation. 3  If the prolapse is severe, the valve leaflets can become disconnected from tendons that stretch between the leaflets and the heart muscle. Problems with the mitral valve include: 1  Mitral stenosis: The leaflets are fused, are too thick, or there is some other structural defect in the valve leaflets. 2  Sometimes, mitral stenosis occurs as a result of surgery to repair an abnormal mitral valve. 1 Sometimes mitral valve prolapse causes mitral valve regurgitation. 2  If the prolapse is severe, the valve leaflets can become disconnected from tendons that stretch between the leaflets and the heart muscle. 3  This can cause the valve to malfunction. Problems with the mitral valve include: 1  Mitral stenosis: The leaflets are fused, are too thick, or there is some other structural defect in the valve leaflets. 2  Sometimes, mitral stenosis occurs as a result of surgery to repair an abnormal mitral valve. The mitral valve (also known as the bicuspid valve or left atrioventricular valve) is a dual-flap (bi-from the Latin, meaning double, and mitral-from the Latin, meaning shaped like a mitre) valve in the heart that lies between the left atrium (LA) and the left ventricle (LV).  In mitral valve disease, the mitral valve, which is located between your left heart chambers (left atrium and left ventricle), doesn't work properly. Types of mitral valve disease include: Mitral valve regurgitation. In this condition, the flaps (leaflets) of the mitral valve don't close tightly, causing blood to leak backward into the left atrium of your heart. If not treated, it can result in heart muscle damage. The most common cause of blood leakage is mitral valve prolapse, in which the leaflets bulge back into the left atrium as your heart contracts. 1  Mitral valve stenosis. 2  In this condition, the flaps of the mitral valve become thick or stiff, and they may fuse together. 1 Mitral valve stenosis. 2  In this condition, the flaps of the mitral valve become thick or stiff, and they may fuse together. 3  This results in a narrowed valve opening and reduced blood flow from the left atrium to the left ventricle.
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what is a mitral valve defect