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Mitral insufficiency - Definition


Mitral insufficiency is an abnormal reflux of blood to the mitral valve, which goes from the left ventricle to the left atrium. The blood is not supposed to move in this direction, but the loss of tightness of the mitral valve that should prevent blood reflux allows it. It can occur by the sudden rupture of one of its structures for stability and causes an acute lung edema with breathing difficulties that rapidly degenerate. It is most often due to a chronic leak in the valve and causes chronic left ventricular failure with fatigue and discomfort, difficulty breathing initially during effort and eventually even at rest. The diagnosis is made through the study of the valves made possible with an echocardiography coupled with a Doppler examination which studies the blood flow.