Table 2 Block time and sensory block in 4 nerves.

From: Comparision of nerve stimulator and ultrasonography as the techniques applied for brachial plexus anesthesia

	Group 1 (US) (n = 30)	Group 2 (PNS) (n = 30)	p value
Block time (min)	7.3 ± 2.6	6.4 ± 3.9	0.39
Sensory block in 4 nerves
10 min	13 (43.33%)	9 (30.00%)	0.29
20 min	24 (80.00%)	17 (56.67%)	0.21
30 min	30 (100.00%)	26 (86.67%)	0.67

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