fig16

Figure 16. Selected video frames from parasternal long-axis 2D and color Doppler study displaying a ventricular septal defect (VSD) in (A). Continuous wave Doppler interrogation of the VSD in (B) depicts high velocity (4.4 m/s) indicating that the pressure in the pulmonary artery is likely to be low (see the text). Aorta (Ao), left atrium (LA), left ventricle (LV), and right ventricle (RV) are labeled. Reproduced from Ref.^[20].