fig37

Figure 37. Selected video frames from parasternal long (A) and short (B) axis views showing the truncus (Tr) overriding the ventricular septum and ventricular septal defect (VSD) (arrows). The position of the VSD (arrow) in the conal septum is demonstrated in (B). In (A), the left ventricle (LV) is posterior while the right ventricle (RV) is anterior. In (B), the left atrium (LA) is posterior and the RV is anterior. Reproduced from Ref.^[28].