fig15

Figure 15. Selected video frames from parasternal long-axis 2D and color Doppler study displaying a ventricular septal defect (VSD) in (A). Pulse Doppler interrogation of the VSD in (B) depicts low velocity (1.5 m/s) indicating that the pressure in the pulmonary artery is likely to be increased (See the text). Aorta (Ao), left atrium (LA), left ventricle (LV), and right ventricle (RV) are labeled. Reproduced from Ref.^[20].