title: [Silent aortic insufficiency mimicking dilated cardiomyopathy].
abstract: The authors report 6 cases of severe and silent aortic insufficiency having simulated in all aspects the picture of a dilated cardiomyopathy at the stage of cardiac insufficiency with primary manifestations. They insist on signs leading to the diagnosis of this clinical entity: past history of rheumatism, signs of electrical left ventricular hypertrophy in the absence of arterial hypertension, aortic calcifications and mostly presence of a discrete mitral diastolic fluttering during echocardiographic examination. Supra-sigmoid aortic angiography confirms the diagnosis of severe aortic regurgitation. In order to explain the non-perception of the murmur, they invoke the alteration of the transmission secondary to an air cushion (3 cases the association of another valvulopathy with murmur (1 case) and mainly the decrease of the leakage by increase of the left ventricular telediastolic pressure and the decrease of the diastolic aortic pressure, with diminution of the turbulences. The advantage of knowing this entity rests on the possibility of valve replacement, even at the stage of myocardial failure, since the satisfactory long-term post-operative evolution in 4 patients stands in contrast with the dangerous nature of a spontaneous evolution.
mesh_terms: D001022:Aortic Valve Insufficiency / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D002311:Cardiomyopathy, Dilated / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Les insuffisances aortiques "muettes" prenant le masque d'une myocardiopathie dilatée.