All sedation will be performed under continuous cardiorespiratory monitoring based on current hospital guidelines under the care and surveillance of a pediatric emergency department registered nurse and physician. Vital signs including heart rate, blood pressure, respiratory rate and oxygen saturation will be monitored continuously and recorded every 2 minutes, with the exception of blood pressure, which will be recorded every 4 minutes. The assisting registered nurse will also record information regarding time of last liquid and solid intake and body weight on the hospital's standard procedural sedation and analgesia record form.