Table 2.

Results of radial artery cannulation in control group and median nerve group

Variables	Control (N = 46)	Median nerve (N = 46)	P value
First-attempt success rate ofradial artery cannulation	36/46(78.3%)	44/46(95.7%)	0.027#
Procedure time to success within the firstattempt (s)	172 ± 66	118 ± 19	< 0.001
Second-attempt success rate within 10 min(%)	42/46(91.3%)	44/46(95.7%)	0.677#
Overall number of attempts (1/2/3 attempt, n)	36/6/4	44/0/2	0.024
Overall complication at first chosen radial artery
Vasospasm	13/46(28.3%)	10/46(21.7%)	0.470
Hematoma	4/46(8.7%)	2/46(4.3%)	0.677#

Values are mean ± SD, or number (proportion)