Characteristics

Dilated

Not dilated

p value

Arch side

Left

Right

22 (62.86)

13 (37.14)

14 (93.33)

1 (6.67)

0.03^*

Tab association

No

DORV & pulmonary atresia

Down syndrome

13 (35.14)

23 (62.16)

1 (2.70)

15 (100.00)

0 (0.00)

0 (0.00)

<0.0001^*