Table 3 Preoperative predictors of LV systolic dysfunction post PDA ligation

Age (months)

26.50 ± 4.41

17.58 ± 4.89

<  0.001

PDA size (mm)

5.42 ± 0.75

3.55 ± 0.99

<  0.001

BSA

0.44 ± 0.04

0.43 ± 0.33

NS

Sex (male /female ratio)

4/10

10/26

NS

LVEDd (mm)

3.57 ± 0.21

3.13 ± 0.33

<  0.001

FS (%)

34.96 ± 3.49

37.41 ± 2.67

<  0.05

EF (%)

59.50 ± 4.23

61.75 ± 3.50

NS

Hospital stay (days)

6.68 ± 0.70

4.04 ± 0.54

<  0.001

Recurrent chest infections (%)

57

25

<  0.05

CHF

9 (64%)

0

<  0.001