Table 1 Population study and clinical findings in the examined groups

age (median; range) [years]

9 (4–11)

15 (8–19)

<0.001

weight (median; range) [kg]

31 (30–45)

11 (5–25)

<0.001

arrhythmia (n)

16

4^a

 atrial fibrillation (n)

15

1

 ventricular tachycardia (n)

1

-

 atrial premature complexes (n)

-

2

 ventricular premature complexes (n)

-

2

LA/Ao (mean ± SD)

3.14 ± 0.31

2.44 ± 0.71

0.08