PMC8086644_01
Two-dimensional and three-dimensional (3D) echocardiographic study of a patient with repaired tetralogy of Fallot and newly diagnosed double-orifice mitral valve. Tissue Doppler imaging in the apical four-chamber view revealed preserved function of the enlarged right ventricle (A). In a parasternal short axis view a color Doppler guided continuous wave regurgitant pulmonary flow of moderate degree was also recorded (B). C. Parasternal short axis view in transthoracic echocardiography. Two separate mitral valve orifices of equal size were observed (arrows). D. Transthoracic 3D image of mitral valve. Mitral valve orifice divided by bridging structure clearly demonstrated at the left ventricular view (arrow). E. Color Doppler flow velocity mapping in an apical view demonstrated two separate jets of left ventricular filling (asterisks). Pulsed wave Doppler imaging confirmed unrestricted opening of the valve (F); LA : left atrium; LV : left ventricle; RV : right ventricle.
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A transthoracic echocardiographic study showed preserved function of the enlarged right ventricle (Fig. 1A) and moderate pulmonary insufficiency (Fig. 1B). In addition, two-dimensional echocardiography in the parasternal short axis view (Fig. 1C) and three-dimensional (3D) transthoracic imaging (Fig. 1D) revealed that the mitral valve was divided with a fibrous bridge in two orifices of equal size (double-orifice mitral valve [DOMV]). Neither regurgitation nor obstruction of the valve was found (Fig. 1E, F).