In this prospective, double-blind, randomised controlled study, a total of 75 patients aged 30-70 years, who were planned for elective modified radical mastectomy after ethics committee approval, were included. Patients were randomly divided into three groups. After induction of general anaesthesia, serratus anterior plane block was applied to all patients. Group B received bupivacaine 30 ml (0.25%), Group D received bupivacaine 30 ml (0.25%) + dexmedetomidine 1μg/kg, Group M received bupivacaine 30 ml (0.25%) + 500 mg magnesium sulphate. Haemodynamic parameters, numerical rating scale (NRS) scores, number of tramadol use with patient-controlled analgesia device, additional analgesic drug consumption and side effects were recorded at 2, 6, 12 and 24 hours postoperatively.
