Bispectral Index and End-Tidal Anesthetic Gas Concentration in Pediatric Patients

Inclusion Criteria: * Pediatric Subjects (ASA physical status I or II or III) aged: 4 years to 18 years scheduled for procedures with sedation where the process of assessment will not interfere with the procedure, progress, or patient care Exclusion Criteria: * Has severe contact allergies that may cause a reaction to standard adhesive materials found in pulse oximetry sensors, ECG electrodes, respiration monitor electrodes, or other medical sensors * Known neurological disorder (e.g., epilepsy, the presence of a brain tumor, a history of brain surgery, hydrocephalic disorders, depression needing treatment with anti-depressive drugs, a history of brain trauma, hemiplegia, demyelinating disorders, cerebral palsy, congenital anomalies of the brain or spinal cord, or other known neurologic disorders) * Severe developmental delay per assessment of investigator or report of parent/guardian * Airway abnormalities * Pregnancy; subjects of childbearing potential will have a urine screen for pregnancy before surgery * If the process of assessment will interfere with the procedure or the progress of the procedure * Taking psychoactive medications * Taking any medications that may have an impact on the Central Nervous System (CNS) * Planned use of any regional anesthesia; a local field block is not included in this exclusion and can be used at the discretion of the anesthesia provider