fig63

Figure 63. Selected video frames from apical four-chamber echocardiographic views of two infants. (A) A normal ventricular relationship; note the higher level of attachment of the mitral valve (MVA) compared to the tricuspid valve attachment (TVA). (B) Ventricular inversion; note the higher level of attachment of the mitral valve (MVA) on the right compared to the tricuspid valve attachment (TVA) on the left, indicating that the ventricles are inverted. Reproduced from Ref.^[39]. LA: Left atrium; LV: left ventricle; MLV: morphologic left ventricle; MRV: morphologic right ventricle; RA: right atrium; RV: right ventricle.