fig1

Figure 1. Selected video frame from a 2D echocardiogram in a parasternal long-axis view of a patient with tetralogy of Fallot demonstrates a large ventricular septal defect (VSD) (thick arrow) and an over-riding aorta (Ao). The right ventricle (RV) is enlarged and hypertrophied (RVH) (thin arrow). Reproduced from Ref.^[5]. LA: Left atrium; LV: left ventricle.