Comparison of analgesic efficacy between bilateral superficial and combined (superficial and deep) cervical plexus block administered before thyroid surgery.

Background And Objective: To evaluate the analgesic efficacy of bilateral superficial cervical plexus block and combined superficial and deep cervical plexus block for incision pain, headache and posterior neck pain after thyroidectomy.

Method: Ninety patients were divided into a control group (group C, n = 30), a bilateral superficial cervical plexus group (group S, n = 30) and a bilateral combined superficial and deep cervical plexus block group (group CO, n = 30). Before general anaesthesia, we performed bilateral superficial cervical plexus block (18 ml) and combined superficial (14 ml) and deep (4 ml) cervical plexus block with 0.