1. Double inlet Left Ventricle Apical four chamber view showing double inlet left ventricle. Note the presence of two atrioventricular valves connecting to a single morphology left ventricle. RA RV LA LV MLV LA RA LA Fig 53

2. Tricuspid atresia LV RV RA LA Apical four chamber view from a patient with an absent right atrioventricular connection (tricuspid atresia). The position of the tricuspid valve is replaced by strand of tissue (arrow). The right ventricular cavity is very small. A perimembranous VSD is also present. vsd Fig 54

3. CLASSICAL GLENN SVC RA IVC RPA LPA BIDIRECTIONAL GLENN SVC PA RA IVC FONTAN PA RA TOTAL CAVOPULMONARY CONNECTION PA SVC IVC RA Fig 55

4. Tricuspid atresia Apical four chamber view of a univentricular atrioventricular connection with atresia of the right sided atriovenricular valve (tricuspid atresia).The patient had a Fontan type repair (right atrium to pulmonary artery connection). The valve between the IVC and right atrium can just be seen in the right atrium (arrow). RA MLV LA Fig 56

5. TCPC Apical four chamber view of a patient with a univentricular atriovenricular connection and a common atrium, post TCPC. Note the TCPC pathway (arrow) at the back of the atrium. Common atrium V Fig 57

6. Tricuspid atresia post Fontan operation Apical view of a univentricular atrioventricular connection resulting from atresia of the right-sided atrioventricular valve (tricuspid atresia). The patient had a Fontan type operation. Note that the right atrium is severely dilated with thrombus inside. RA LV LA Fig 58

7. Fontan: The giant RA and large clot TOE image taken from a patient with a double inlet left ventricle post Fontan (atria-pulmonary connection) repair. Note the severely dilated right atrium with giant thrombus and spontaneous contrast inside the atrial chamber (arrow). RA Fig 59