Different Learning Curves for Axillary Brachial Plexus Block: Ultrasound Guidance versus Nerve Stimulation

Table 2

Axillary brachial plexus block characteristics. Data are numbers or mean (±SD).

	Ultrasound	Nerve stimulator	𝑃-values
Number of records	259	343	—
Block-performing time in minutes	22.1 (±8.4)	34.7 (±12.7)	<.001
Incidence of vessel puncture	32 (12.4)	173 (50.4)	<.001
Volume of local anaesthetics in millilitres	38.5 (±6.3)	46.7 (±6.9)	<.001
Type of local anaesthetics
Mepivacaine 1%	182 (73.4)	187 (58.3)
Ropivacaine 0.75%	49 (19.8)	1 (0.3)
Combination of mepivacaine and bupivacaine	17 (7.9)	133 (41.3)	<.001
Not recorded	11	22