Outcome Measures: The primary outcome will be total sedation time, defined as the time that the first study drug was injected until the patient is fully recovered with a minimum recovery score ≥ 8. Secondary outcomes will include time to recovery; patient, nurse, and physician satisfaction; complications and adverse events. The patient, nurse and physician will be asked to individually assess their level of satisfaction with the sedation procedure using a 7-point Likert scale (Appendices C-E).