 This is a randomized double-blinded trial. We will enroll 100 children aged 1-6 years old. Premedication with midazolam will be decided by the anesthesiologist. If needed, the patient will receive a standard does of oral midazolam plus acetaminophen V. If the patient does not require premedication with midazolam, oral acetaminophen will be given alone NV. 