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Description of the videos in their displaying order left to right:
1: first impression: large VSD, unbalanced ventricles, output vessels do not cross each other.
2: output vessels do not cross each other.
3: situs - stomach on the left, cardiac axis on the right, the RV being anterior: dextrocardia.
4: AV connection: pulmonary veins connecting to a left atrium. No right atrium is difficult to identify. One AV valve connecting to a left-type main ventricle.
5: Focus on the large VSD between the left-type ventricle and the small right-type ventricle. In situations with a functionally univentricular heart, the large VSD is called "bulbo ventricular foramen".
6: Focus on outflow tracts: 2 large outflow tracts, each with their own valves, parallel to each other, arising from an equivalent of unique functional ventricle (left-type as main, and large VSD opening in archaic right-type one).
7: Doppler on outflow tracts: both anterograde flow in both, without aliasing. Back to video 2- on axial plane, the anterior vessel does not divide itself: an aorta, which is right-sided. The middle vessel divides itself early: pulmonary trunk.
8, 9, 10: careful examination reveals that the ductus arteriosus feeds the descending thoracic aorta alone. No connection between aortic isthmus after subclavian left artery: interrupted aortic arch type A.
11. systemic venous return with IVC connecting to the right atrium (OD).