fig72

Figure 72. Selected video frames from modified apical four-chamber views of two infants (A, B) with mitral atresia, demonstrating atretic mitral valves (AMV), indicated by thick arrows in (A) and (B). A small left atrium (LA) and left ventricle (LV), and a large right ventricle (RV) are also seen. The thin arrow in (B) shows a restrictive patent foramen ovale (PFO). Reproduced from Ref.^[39].