When the heart contracts, blood is ejected into the aorta, at which point the valve is open. When the heart relaxes, the valve ... expansion of the ascending aorta up to 45 mm in patients with Marfan syndrome and in the presence of risk factors in the ... But if the patients aorta becomes too wide or the heart valve leaflets are damaged, the aortic opening does not close ... A doctor places an artificial heart valve inside the aorta, which can be mechanical or biological. Heart valve replacement can ...

... treatment of diseases of the thoracic aorta, as well as treatment of heart failure by implanting an artificial heart. ...