Effect of the Combination of Dexamethasone and BIS Monitoring on Reducing Postoperative Nausea and Vomiting in Children

Immediately after securing the airway, an electrode will be attached and BIS monitoring will begin. This will be used to control the depth of general anaesthesia throughout the entire surgical procedure, with the aim of achieving BIS values of 40-60. Intervention group: Following the administration of dexamethasone at the same dos-age as in the control group, BIS monitoring will be initiated immediately, with the depth of general anaesthesia controlled to a BIS value of 40-60. Control group: Once access to the vascular system has been secured, dexamethasone will be administered intravenously at a dose of 0.15 mg/kg body weight, up to a maxi-mum of 5 mg. A non-functional electrode for bispectral index (BIS) monitoring will then be attached to the patient's forehead. The depth of anaesthesia will be controlled based on the minimum alveolar concentration (target MAC: 1-1.1).