Videos:
Video 1: Apical view at 24 weeks showing the accessory chamber (AC) and main chamber (MC) of the left ventricle that lie side by side. AC has a normal contractility. LA: left atria; RA: right atria; RV: right ventricle.
Video 2: Apical view showing that the main chamber (MC) of the left ventricle is in connection with mitral valve and aortic valve. AC: accessory chamber; AO: ascending aorta; LA: left atria; RV: right ventricle.
Video 3: Postnatal echocardiogram apical view at 4 days of life demonstrating the antenatal findings. AC: accessory chamber; Ao: ascending aorta; LA: left atria; MC: main chamber; RV: right ventricle.
Video 4: Postnatal echocardiogram parasternal view at 8 weeks of life showing a dilated and hypokinetic left ventricle.