Table 1.

Univentricular AV connection: atrial situs.

Atrial situs	Double inlet ventricles: 55 hearts			Absent AV connection: 141 hearts
	Double inlet LV	Double inlet RV	Double inlet IV	Absent left connection	Absent right connection
Solitus	29	5	1	108	28
Right isomerism	6	12	–	–	–
Left isomerism	–	2	–	2	3
Total	35	19	1	110	31

AV, atrioventricular; IV, indeterminate ventricle; LV, left ventricle; RV, right ventricle.