Three-Dimensional Echocardiography in Criss-Cross Heart

A 9-day-old neonate weighing 3 kg was referred to our institution for cyanosis and a systolic murmur. A 2-dimensional echocardiogram suggested SDL, levocardia, criss-cross heart with double-outlet right ventricle, hypoplasia of the tricuspid valve and right ventricle, and severe pulmonary stenosis. A real-time 3-dimensional echocardiogram (Sonos 7500, Philips Medical Systems, Andover, Mass) demonstrated the complex anatomy of the criss-cross heart as clearly as if one were viewing an anatomic specimen.The atria were situated in relatively normal positions, with normal venous connections. The left atrium was posterior and communicated via the mitral valve with the morphologically left ventricle situated inferiorly and extending to the right …