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 4
Administration of local anesthetic through the patient-controlled device.
Administration of local anesthetic through the patient-controlled device
Group A (n = 28)
Group B (n = 29)
value
Total dose (mL)
92.0 ± 35.5
108.3 ± 38.6
0.104
Bolus injection dose (mL)
Bolus injection dose at 24 h (mL)
15.7 ± 7.3
20.0 ± 8.7
0.047
Bolus injection dose at 48 h (mL)
12.6 ± 4.9
13.7 ± 6.7
0.468
Frequency of using bolus at 24 and 48 h
At 24 h
1.8 ± 1.9
3.0 ± 2.4
0.034
At 48 h
1.0 ± 1.2
1.2 ± 1.6
0.589
All measured values are presented as the mean ± standard deviation or number of patients (%). < 0.05.
