fig48

Figure 48. (A) Echo-Doppler study in a modified high parasternal short-axis (ductal) projection, illustrating a small patent ductus arteriosus (PDA) with shunting from descending aorta (DAo) to the pulmonary artery (PA) by color Doppler. (B) Magnified view of (A). Aorta (Ao) and right ventricle (RV) are labeled.