fig20

Figure 20. Echo-Doppler studies in apical four-chamber (A) and precordial short-axis (B, C) projections of a child with an atrial septal defect (ASD) demonstrating dilation of the right atrium (RA), right ventricle (RV), and main (MPA), left (LPA), and right (RPA) pulmonary arteries. The left atrium (LA) and left ventricle (LV) are labeled.