Table 2.

Anatomy and ventricular function assessment in single ventricles

Anatomy	Ventricular function
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

EDV end-diastolic value, EF ejection fraction, ESV end-systolic volume