Table 2 Device and procedural characteristics

Nominal diameter, mm

3.23 ± 0.34

3.07 ± 0.54

0.124

Length, mm

21.80 ± 5.62

21.13 ± 9.21

0.693

Stenosis, %

81 ± 14

89 ± 14

0.023

Inflation time, sec

44 ± 13

26 ± 8

<0.001

Inflation pressure, atm

13 ± 3

13 ± 3

0.799

Predilatation, n (%)

34 (85)

23 (58)

0.006

Predilatation-ballon diameter, mm

2.64 ± 0.51

2.34 ± 0.46

0.026

Predilatation-ballon inflation pressure, atm

13 ± 2

12 ± 3

0.266

Postdilatation, n (%)

22 (55)

27 (68)

0.179

Postdilatation-ballon diameter, mm

3.41 ± 0.47

3.27 ± 0.60

0.380

Postdilatation-ballon inflation pressure, atm

15 ± 3

16 ± 4

0.282

Postdilatation with NC-ballon, n (%)

21 (53)

16 (40)

0.321

Contrast volume, ml

215.2 ± 150.9

213.9 ± 96.8

0.963

Radiation time, min

12.1 ± 9.2

11.8 ± 6.5

0.874