Background: Ketamine and Propofol are two agents that have been well studied and are commonly utilized as single agents for sedation. Ketamine is a dissociative agent that has amnestic and analgesic qualities. It has the unique property of allowing for deep sedation with minimal effects on the patient's respiratory drive. Ketamine use does not cause hypotension and in fact can have a positive effect on blood pressure. Ketamine has been extensively studied in paediatric sedation and has been found to be a safe and effective (2,3,4). Side effects associated with Ketamine use include post procedural nausea and vomiting, and unpleasant emergence phenomena such as agitation or hallucinations. Ketamine sedation can result in prolonged recovery times compared to other sedative agents and has a low rate of respiratory depression, apnea and laryngospasm (1).