Table 2 Ultrasound parameters in relationship with the initial vexus grading

2.5 ± 0.4

2.3 ± 2

2.5 ± 0.2

2.8 ± 0.5

0.005*

15.0 ± 9.2

20.1 ± 11.1%

13.2 ± 7.9%

12.3 ± 7.2%

0.054

0.56 ± 0.49

0.82 ± 0.36

0.71 ± 0.47

0.06 ± 0.2

< 0.001^&

52.8 ± 28.5

37.8 ± 5.7%

47.9 ± 8.9%

79.4 ± 45%

< 0.001^&

0.36 ± 0.31

0.17 ± 0.20

0.32 ± 0.29

0.63 ± 0.24

< 0.001^&

31 ± 10

31 ± 10

30 ± 12

32 ± 8

0.89

40 ± 14

41 ± 11

40 ± 16

38 ± 15

0.87

15.2 ± 4.8

15.4 ± 4.9

15.4 ± 4.8

14.6 ± 5.0

0.88

57 ± 11

56 ± 12

57 ± 10

56 ± 12

0.94

17.4 ± 4.6

15.9 ± 3.8

19.4 ± 5.4

15.9 ± 3.7

0.05

33 ± 14

28 ± 12

36 ± 14

33 ± 16

0.33