Background And Objectives: The aim of the present study was to compare the new combination of intraarticular + subacromial injection, with intraarticular, subacromial injection and interscalenic brachial plexus block as postoperative analgesia in shoulder arthroscopy.
Methods: One hundred and twenty patients scheduled for shoulder arthroscopy were enrolled and randomly assigned to one of five groups: intraarticular, subacromial, interscalenic brachial plexus block (IBPB), intraarticular + subacromial (intraarticular + subacromial) injection or a control group. All patients received standardized general anaesthesia and all the injections were given with the same dose and volume of local anaesthetic. The number of boluses (fentanyl 1 microg kg(-1) delivered by a patient-controlled analgesia pump applied at the end of the surgery and the visual analogue pain score (VAPS) at 0, 2, 4, 6, 12, 18 and 24 h after the intervention were recorded. A patient satisfaction score was also assessed at 24 h.
Results: Mean bolus consumption, compared with control group, was significantly less in all groups (P < 0.01). Intraarticular + subacromial group utilized fewer boluses compared with subacromial group and significantly lower boluses than intraarticular group (P < 0.01), but IBPB group utilized significantly fewer boluses than intraarticular + subacromial group. Patients in IBPB, intraarticular + subacromial and subacromial groups showed VAPSs that were significantly better than that of the control group at all time points (P < 0.01). The VAPS in intraarticular + subacromial group was statistically comparable with those in IBPB and subacromial groups at each time interval. IBPB and intraarticular + subacromial groups showed comparable patient satisfaction scores.
Conclusion: These results confirm the analgesic efficacy of IBPB for shoulder surgery. Nonetheless, the combination of intraarticular and subacromial infiltration, studied for the first time, appears to be a clinically valid alternative with no clinical meaningful adverse effects.
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