fig44

Figure 44. Echo-Doppler studies in parasternal long (A) and short (B) axis and apical four-chamber (C) projections of the ventricular septum demonstrating a small mid-muscular ventricular septal defect (VSD) (arrows in A, B, and C) with shunt from the left (LV) to the right (RV) ventricle by color flow Doppler. Definitive difference in the site of the VSD between this and the perimembranous VSD illustrated in [Figure 40A, Figure 41A and B, Figure 42] should be noted. Aorta (Ao), left atrium (LA), and right atrium (RA) are marked. Reproduced from Ref.^[3].