Comparison of Continuous and Programmed Intermittent Bolus Infusion of 0.2% Ropivacaine after Ultrasound-Guided Continuous Interscalene Brachial Plexus Block in Arthroscopic Shoulder Surgery

Table 2

Visual analog scale (VAS) scores and incidence of rescue analgesic at 0, 24, and 48 h after surgery.

Time (h)		Group A (n = 28)	Group B (n = 29)	value
0	VAS	21.8 ± 14.7	20.7 ± 15.3	0.784
	Rescue analgesic	4 (14.3)	6 (20.7)	0.730
24	VAS	37.1 ± 15.4	40.7 ± 21.0	0.472
	Rescue analgesic	14 (50.0)	13 (44.8)	0.793
48	VAS	27.9 ± 14.0	29.3 ± 15.3	0.710
	Rescue analgesic	7 (25.0)	5 (17.2)	0.530

All measured values are presented as the mean ± standard deviation or number of patients (%).  < 0.05 0 h: immediately after admission to the PACU.