Fetal echocardiography of a case of right atrial isomerism (heterotaxy)

Echocardiographic still frame and movie (clip 1) of a fetus with right atrial isomerism at 33 weeks' gestation with a common atrioventricular valve, and showing the juxtaposed position of the IVC and aorta together on the same (left) side of the spine. The aorta is posterior to the IVC. The confluence seen coursing behind the atrium on the left denotes the fact that there is probably total anomalous pulmonary venous connection. Movie clip 2 demonstrates another example of a complete atrioventricular canal with no apparent ventricular septum.
Note: The IVC and aorta are on the same side of the spine.