Effect of Midazolam Premedication on Mask Ventilation Difficulty

American Society of Anesthesiologists (ASA) class I and II patients aged 2-10 years who are scheduled for any elective surgery under general anesthesia will be enrolled. Patients in midazolam group will be treated with midazolam premedication (3 cc mixture of 0.1 mg/kg midazolam and normal saline; maximum midazolam dose, 3 mg) intravenously at waiting area 3 minutes before transportation to an operating room, while 3 cc normal saline will be administered to control group patients. Difficulty of mask ventilation during induction of general anesthesia will be evaluated with the Han Mask Scale. Muscle relaxants will be given for intubation after evaluation. The anxiety and sedation level of patients will be estimated one minute before the intervention and one minute before anesthetic induction in an operating room. Interventıon descriptıon Patients enrolled in this study are randomly allocated to midazolam group or control group. Total 120 patients will be enrolled. Each group consists of 60 patients. Patients of midazolam group will be treated with midazolam premedication (3 cc mixture of 0.1 mg/kg midazolam and normal saline; maximum midazolam dose, 3 mg) intravenously at waiting area 3 minutes before transportation to an operating room. Control group patients are treated with 3 cc normal saline at waiting area 3 minutes before transportation to an operating room. In anesthesia induction, propofol 2 mg/kg will be given. Before the patients were given muscle relaxants, the patients were evaluated with the Han's mask scale.