Table 2: Diagnostic variables.

Sequential classification

n (%)

Level 1 - Venous return

2 (2)

Obstructive supracardiac TAPVC

1 (1)

Non-obstructive supracardiac TAPVC

1 (1)

Level 2 - Atrial

25 (22)

Ostium secundum type ASD

23 (20)

ASD + Amplatzer failure

1 (1)

Common atrium + left superior vena cava

1 (1)

Level 3 - AV connection

0 (0)

Level 4 - Ventricular

14 (12)

Perimembranous VSD

12 (10)

Infundibular VSD

2 (2)

Level 5 - VA Connection

0 (0)

Level 6 - Great arteries

68 (61)

Aortic coarctation

2 (2)

Aortic coarctation + aortic arch hypoplasia

3 (3)

Type A aortic arch interruption

3 (3)

PDA

58 (51)

PDA + major aortopulmonary

collateral arteries

1 (1)

AoPu window + anomalous origin of PA

from Ao + AoCo + aortic arch hypoplasia

1 (1)

Level *- Other congenital

and/or pediatric heart diseases

4 (3)

Complete congenital AV block

2 (1)

Mediastinal hemorrhage

+ stroke post VSD closure

1 (1)

Bilateral hemopneumothorax

1 (1)

* Unclassifiable level.

Ao = aorta.

AoCo = aortic coarctation.

ASD = atrial septal defect.

AV = atrioventricular.

PDA = patent ductus arteriosus.

Pu = pulmonary.

TAPVC = total anomalous pulmonary vein connection.

VA = ventriculoarterial.

VSD = ventricular septal defect.