[Echocardiographic study of congenital mitral valvulopathy].

M mode, two dimensional and Doppler echocardiographic findings of eleven patients with congenital abnormalities of mitral valve are described. Nine of them had mitral stenosis and two had predominant regurgitation. Six of our patients had other associated cardiovascular malformations (3 coarctation of the aorta, two tetralogy of Fallot and one patent ductus arteriosus). In none of them, there was demonstration of abnormal echoes in the left atrium. In patients with congenital mitral stenosis the M mode echocardiographic findings were indistinguishable of those present in rheumatic mitral stenosis. With two dimensional echocardiography the anatomy was determined from the subvalvular characteristics and the mitral valve diastolic area. The Doppler study showed increase of the peak velocity of the mitral flow in all cases. We conclude that the M mode and two dimensional-Doppler echocardiography are helpful in the recognition of the isolated congenital mitral pathology or when it is associated to other malformations.