mitral incompetence

mitral incompetence
failure of the mitral valve to close, allowing a reflux of blood from the left ventricle of the heart to the left atrium. It most often results from scarring of the mitral valve by rheumatic fever, but it can also develop as a complication of myocardial infarction or cardiomyopathies. It may occur as a congenital defect. Its manifestations include breathlessness, atrial fibrillation, embolism, enlargement of the left ventricle, and a systolic murmur. Mild cases are symptomless and require no treatment, but in severe cases the affected valve should be replaced with an artificial one (mitral prosthesis).

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see under insufficiency.

Medical dictionary. 2011.

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Look at other dictionaries:

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  • mitral incompetence — noun see mitral insufficiency …   Useful english dictionary

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  • mitral regurgitation — mitral incompetence failure of the mitral valve to close, allowing a reflux of blood from the left ventricle of the heart to the left atrium. It may be due to mitral valve prolapse (MVP) in which one or both valve leaflets flop back into the left …   The new mediacal dictionary

  • Mitral regurgitation — See also: aortic insufficiency and tricuspid insufficiency Mitral regurgitation Classification and external resources Mitral regurgitation (schematic drawing) During systole, contraction of the left …   Wikipedia

  • mitral insufficiency — noun also mitral incompetence : inability of the mitral valve to close perfectly permitting blood to flow back into the auricle and leading to varying degrees of heart failure * * * Pathol. abnormal closure of the mitral valve resulting in… …   Useful english dictionary

  • Mitral insufficiency — Malfunction of the mitral valve. Mitral insufficiency allows the backflow of blood (regurgitation) from the left ventricle into the left atrium. * * * mitral insufficiency n inability of the mitral valve to close perfectly permitting blood to… …   Medical dictionary

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  • incompetence — in·com·pe·tence ( )in käm pət ən(t)s n 1) lack of legal qualification 2) inability of an organ or part to perform its function adequately <incompetence of an aortic valve> * * * n. impaired function of the valves of the heart or veins,… …   Medical dictionary

  • Mitral regurgitation — Backflow of blood from the left ventricle to the left atrium due to mitral valve insufficiency (malfunction). * * * mitral regurgitation n backward flow of blood into the atrium due to mitral insufficiency * * * (MR) the backflow of blood from… …   Medical dictionary

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