Variable

Anatomic Landmark Method (n = 63)

Ultrasound-Guided method (n = 41)

P Value

Rate of success

61 (96.8%)

41 (100%)

0/518

Complications

10 (15.9%)

1 (2.4%)

0.04

Pain

6 (9.5%)

1 (2.4%)

0.24

Infection

3 (4.8%)

-

0.27

Thrombus

4 (6.3%)

-

0.15

Necrosis

2 (3.2%)

-

0.51