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backflow of blood from the aorta into the left ventricle, owing to insufficiency of the aortic valve
; it may be chronic or acute.
backflow of blood from the left ventricle into the left atrium, owing to insufficiency of the mitral valve
; it may be acute or chronic, and is usually due to mitral valve prolapse, rheumatic heart disease, or a complication of cardiac dilatation.
backflow of blood from the pulmonary artery into the right ventricle, owing to insufficiency of the pulmonic valve
backflow of blood from the right ventricle into the right atrium, owing to imperfect functioning (insufficiency
) of the tricuspid valve
mi·tral re·gur·gi·ta·tion (MR),
reflux of blood through an incompetent mitral valve.
The backward flow of blood from the left ventricle into the left atrium of the heart, caused by incompetent closure of the mitral valve. Also called mitral insufficiency.
a backflow of blood from the left ventricle into the left atrium in systole across a diseased mitral valve. The condition may result from congenital valve abnormalities, rheumatic fever, mitral valve prolapse, endocardial fibroelastosis, myocarditis, myocardiopathy, or dilation of the left ventricle as a result of severe anemia. Symptoms include dyspnea, fatigue, intolerance of exercise, systolic murmur, and heart palpitations. Congestive heart failure may ultimately occur. Treatment depends on the severity of the condition. Surgery may be necessary in cases of refractory congestive heart failure, progressive cardiomegaly, and pulmonary hypertension. Also called mitral insufficiency
. See also valvular heart disease
mitral regurgitation Chronic mitral valve regurgitation, mitral insufficiency Cardiology Backflow of blood from the left ventricle to the left atrium due to a defective mitral valve, which ↓ forward flow of blood and ↑ work by heart to pump more blood to compensate for inefficiency; acute MR may be due to valve dysfunction or injury post MI or infectious endocarditis, which may cause rupture of the valve, papillary muscle, or chordae tendineae–which anchor the valve cusps, resulting in valve leaflet prolapse into the atrium, leaving an opening for the backflow of blood; chronic MR is prolonged and progressive, and often associated with mitral valve prolapse, characterized by weakening and ballooning Etiology Rheumatic heart disease–thickening, rigidity, retraction of mitral valve leaflets; ASHD, HTN, left ventricular enlargement, connective tissue disorders–eg, Marfan syndrome, congenital defects, endocarditis, heart tumors, late syphilis, untreated acute MR. See Mitral valve.
val·vu·lar re·gur·gi·ta·tion (val'vyū-lăr rĕ-gŭr'ji-tā'shŭn)
A leaky state of one or more of the cardiac valves, in which the valve does not close tightly and blood therefore regurgitates through it.
Synonym(s): valvular insufficiency
shaped like a miter; pertaining to the mitral valve.
that area of the thoracic wall through which sounds of the mitral valve can best be auscultated; generally the lower one-third of the mid- to anterior left thorax.
mitral atresia-hypoplastic left heart syndrome
defects in the development of the mitral valve, left heart and aortic valve, which occur rarely in cats.
includes the leaflets, annulus, chordae tendineae and papillary muscles of the mitral valve, left atrium and left ventricular muscle wall.
a functional incompetence resulting in regurgitation of blood from the left ventricle to the left atrium during systole or from the great vessels into the left atrium during diastole.
see mitral insufficiency (above).
the left atrioventricular valve, the valve between the left atrium and the left ventricle of the heart; it is composed of two cusps, anterior and posterior. Called also the bicuspid valve.
mitral valve prolapse (MVP)
a condition in which some portion of the mitral valve is pushed back too far during ventricular contraction. Often a complication of mitral endocardiosis.
Patient discussion about mitral regurgitation
Q. what do you do with a broken heart? I HAD A ECHO DONE THIS WEEK AND CONCLUSION WAS: 1)SEVERE MIRTAL REGURGITATION WITH LEFT ATRIAL DILATATION 2)LOW NORMAL LV FUNCTION CHEST X RAY IMPRESSION WAS: 1)NORMAL SIZE HEART WITH PROMINENT LEFT HEART BORDER. 2)PROMINENT MARKINGS WITH PROMINENT CHANGES. 3)THE BONES ARE OSTEOPENIC. BLOOD TEST....CHEMISTRY B TYPE NATRIURETIC PEPTIDE HIGH 260
A. The left atrial dilatation is likely the cause of the elevated beta natriuretic peptide. A cardiologist should be able to talk with you about dealing with the mitral valve regurgitation.More discussions about mitral regurgitation