 Investigators studied 100 pediatric surgical patients admitted to Sulaimani Teaching Hospital in the Otorhinolaryngology, Head and Neck Surgical Department, from the first of June 2011 to the first of September 2011, Children aged 2-7 years,both genders, ASA physical statuses І and II ASA I: a healthy normal patient, while ASA II: a patient with mild systemic disease with no functional limitations were scheduled for elective adenotonsillectomy operations. They were randomly divided into two equal groups according to the induction method. 