Table 2 Anatomy and ventricular function assessment in single ventricles

Viscero-atrial situs, ventricular morphology and cardiac segments

Ventricular EDV

Aortic arch, aimed mostly at patients with an aortic to pulmonary anastomosis, to assess for aortic arch obstruction

Ventricular ESV

Pulmonary artery, to assess for pulmonary artery stenosis, hypoplasia, discontinuity

Ventricular stroke volume

Atrial septal defect

Ventricular EF

Ventricular outflow tract obstruction (especially in patients with a bulboventricular foramen)

Cardiac index

Systemic-pulmonary and veno-veno collaterals

Regional wall motion

Anomalous venous structures

Pulmonary or systemic venous obstruction

Systemic venous return such as interrupted inferior vena cava with azygous continuation or the presence of a left superior vena cava