Table 1 Baseline demographics of patient population

Gestational age (week, mean ± SD)

37.8 ± 3.2

40.5 ± 1.4

0.033

Birth weight (kg, mean ± SD)

3.0 ± 0.6

3.3 ± 0.4

ns

Gender m/f

2/3

4/3

ns

Genetic syndrome n (%)

2 (40.0)

1 (14.3)

ns

Birth mode n spontaneous/caesarean section

3/2

2/5

ns

Prenatal diagnosis of heart defect n

1 (20)

1 (14.3)

ns

Preterm n (%)

1 (20.0)

0 (0)

ns

Cardiac structural diagnosis n (%)

 IAA Type A

2 (40.0)

5 (71.4)

ns

 IAA Type B

3 (60.0)

2 (28.5)

ns

 IAA Type C

0 (0)

0 (0)

ns

 Aortic valve dysplasia

2 (40.0)

3 (42.9)

ns

 Mitral valve dysplasia

1 (20.0)

1 (14.3)

ns

 Ventricular septum defect

4 (80)

6 (85.8)

ns

 Truncus arteriosus communis

1 (20.0)

0 (0)

ns

 Aortopulmonary window

0 (0)

1 (14.3)

ns

 Left ventricular outflow tract obstruction

3 (60.0)

0 (0)

0.02

Risk scores (mean ± SD)

 Rhodes score

− 0.59 ± 0.57

− 0.44 ± 0.45

ns

 CHSS-1 score

− 10.5 ± 18.3

− 10.4 ± 9.3

ns

 Discriminant score

− 0.17 ± 1.6

 + 0.12 ± 0.6

ns

 CHSS-2 score

− 70 ± 16.4

− 53.5 ± 17.5

ns