fig26

Figure 26. Echocardiographic studies in apical four-chamber views of an infant with Down syndrome demonstrating common atrioventricular septal defect. Note an ostium primum atrial septal defect (PASD) and a ventricular septal defect (VSD) (arrows) in (A). Mitral regurgitation (MR) (arrow) is shown in (B). Left atrium (LA), left ventricle (LV); right atrium (RA), and right ventricle (RV) are labeled. Reproduced from Ref.^[20].