A written informed consent will be taken from the patients' legal guardians.Patients will be assigned randomly to three groups (30 subjects each) to be anesthetized and either randomly assigned to listen to the mother's recorded voice at 2 times (in the holding area 3 minutes before induction of anesthesia till induction of anesthesia is ended) and (during emergence from anesthesia till complete recovery) (Group M) or will be given a single bolus of dexmedetomidine 0.2 µ/kg IV at 2 times (in the holding area 3 minutes before induction of anesthesia) and (at the end of surgery) (Group D) or given the same volume of saline IV at 2 times (in the holding area 3 minutes before induction of anesthesia) and (at the end of surgery) (Group C).To keep blinding, group M will be injected IV with the same volume of saline at the same 2 times as in groups D & C while in groups D & C, headphones will be putted as in group M at the same 2 times with no recorded voice.
The aim of this study is to compare the efficacy of mother's recorded voice versus dexmedetomidine injection on postoperative agitation in children undergoing elective surgery.