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Fig. 1.
Four-chamber view at 37 weeks of gestation. The left atrium, which is located most posteriorly and contains the foramen oval flap, is connected to the right-shaped left ventricle; the right atrium is also connected to the left-shaped right ventricle. Note that the left-sided ventricle contains the moderator band (red arrow) and tricuspid valve (left-sided AV valve displays greater apical displacement than the right-sided one). RA – right atrium; LA – left atrium; RV – right morphological ventricle; LV – left morphological ventricle; R – right side; L – left side; T – tricuspid valve; M – mitral valve; pv – pulmonary vein
Fig. 2.
Fetal echocardiography at 37 weeks of gestation showing the ventricular outflow tracts: A. the aorta artery arising from the right morphologically ventricle (left-sided ventricle) and B. the pulmonary artery arising from the left-morphologically ventricle (right-sided ventricle). Ao – aorta; PA – pulmonary artery; RA – right atrium; RmV – right morphological ventricle; LmV – left morphological ventricle; A – anterior; P – posterior
Fig. 3.
Postnatal transthoracic echocardiogram of the parasternal long axis with the great vessels running in parallel. Ao – aorta; PA – pulmonary artery; A – anterior; P – posterior