A single ventricle anomaly with a modified Blalock-Taussig shunt supplying pulmonary blood flow.
Single normal-sized ventricle, the other ventricle is severely hypoplastic.
Bidirectional Glenn Shunt: The superior vena cava has been connected to the right pulmonary artery.
The Blalock-Taussig shunt is now divided.
The Fontan operation: The inferior vena caval blood has been routed to the pulmonary artery, in this example using the extra-cardiac conduit technique.