mitral regurgitation


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regurgitation

 [re-ger″jĭ-ta´shun]
1. a backward flowing; see also backflow and reflux.
aortic regurgitation backflow of blood from the aorta into the left ventricle, owing to insufficiency of the aortic valve; it may be chronic or acute.
mitral regurgitation 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.
pulmonic regurgitation backflow of blood from the pulmonary artery into the right ventricle, owing to insufficiency of the pulmonic valve.
tricuspid regurgitation backflow of blood from the right ventricle into the right atrium, owing to imperfect functioning (insufficiency) of the tricuspid valve.
valvular regurgitation backflow of blood through the orifice of one of the heart valves owing to imperfect closing of the valve (valvular insufficiency); see aortic, mitral, pulmonic, and tricuspid regurgitation.

mi·tral re·gur·gi·ta·tion (MR),

reflux of blood through an incompetent mitral valve.

mitral regurgitation

n.
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.

mitral regurgitation

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.

mitral

shaped like a miter; pertaining to the mitral valve.

mitral area
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.
mitral complex
includes the leaflets, annulus, chordae tendineae and papillary muscles of the mitral valve, left atrium and left ventricular muscle wall.
mitral insufficiency
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.
mitral regurgitation
see mitral insufficiency (above).
mitral valve
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
References in periodicals archive ?
The presence of mitral regurgitation early after acute MI is a predictor of adverse outcomes like atrial fibrillation, heart failure hospitalization and death 9,12 .
Though mitral valve repair has become the procedure of choice for degenerative mitral regurgitation25, its use for correction of rheumatic mitral regurgitation has remained scant11-13, because repair is technically more difficult and is associated with a high failure rate in this group.
7] Functional mitral regurgitation is a poor prognostic sign in left ventricular dysfunction caused by cardiomyopathy or ischaemic disease.
Surgical treatment is recommended in symptomatic patients with MVP associated with severe mitral regurgitation or asymptomatic patients but with left ventricular dilatation (end-diastolic diameter >45 mm) or reduced left ventricular ejection fraction.
Mitral regurgitation is the result of a mechanical dysfunction of the mitral valve and definitive correction is also mechanical (surgical).
Keywords: Myocardia infarction, Ventricular Septal defect, Mitral valve, Mitral regurgitation, Left ventricular repture.
A It's true that mild mitral regurgitation may never cause symptoms or other complications.
Utilizing the heart's natural structures, the device is intended to reduce mitral annulus dilatation upon deployment, thereby significantly reducing functional mitral regurgitation (FMR).
We report about a rare congenital lesion of the subvalvular apparatus of the mitral valve which resulted in severe mitral regurgitation.
New coverage includes genetic, molecular and cellular mechanisms of disease; bicuspid aortic valve disease; and ischemic mitral regurgitation.