fig42

Figure 42. Echocardiographic study with color flow Doppler in a parasternal long-axis view illustrating a perimembranous ventricular septal defect (VSD) with left-to-right shunt. Note turbulent flow across the VSD. Aorta (Ao), left atrium (LA), and left ventricle (LV) are labeled. Modified from Ref.^[3].