fig11

Figure 11. Parasternal long-axis echocardiographic views of two neonates, first, (A), with transposition of the great arteries and second, (B), with normally related great arteries. Note that in (A), the posterior vessel arising from the left ventricle (LV) is coursing backward (posteriorly) after its origin from the LV and is likely to be the pulmonary artery (PA), suggesting transposition of the great arteries. This vessel should be traced and its bifurcation demonstrated (see Figure 12) to confirm that it is indeed the PA. In (B), the posterior vessel arising from the LV courses somewhat anteriorly, indicating that it is likely to be the aorta. Reproduced from Ref.^[13]. Ao: Aorta; LA: left atrium; RV: right ventricle.