Abstract

Background and Aims:Intravenous analgesics and local infiltration are used for postoperative analgesia in patients undergoing mastoidectomy. No randomised controlled trial (RCT) has so far determined response rates of pain reduction after ultrasound-guided superficial cervical plexus block (SCPB) in adult patients undergoing modified radical mastoidectomy.Methods:This double-blind RCT was conducted in 30 adult patients of the American Society of Anesthesiologists (ASA) grade I/II undergoing modified radical mastoidectomy. The primary outcome was a reduction in the visual analogue scale (VAS) score. Secondary outcomes were postoperative diclofenac consumption, haemodynamics, and occurrence of any adverse events. All patients received general anaesthesia. At the end of the surgery, patients were randomised to either Group ‘Block’ (n = 15) ultrasound guided SCPB with 5 mL ropivacaine 0.5% or Group ‘No block’ (n = 15). All patients received intravenous (IV) paracetamol 1 g every 6 hourly and rescue analgesic IV diclofenac 75 mg if VAS score >4.Results:Patients in Group ‘Block’ reported lower VAS score at rest versus Group ‘No block’ at 1 h postoperatively (P = 0.012). VAS score on movement was lower in patients of Group ‘Block’ compared to Group ‘No block’ at 1 h (P = 0.010), 4 h (P = 0.035), 8 h (P = 0.027), and 12 h (*P = 0.003) postoperatively. Diclofenac consumption was lower in patients of Group ‘Block’ (P = 0.041). No adverse effects were reported.Conclusion:Postoperative ultrasound-guided SCPB produced higher response rates in terms of reduction in VAS score in patients undergoing modified radical mastoidectomy.

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