Ketamine was first developed over 40 yeas ago. It was used in the field by the US army in Vietnam and has been used extensively throughout the world (but not very much in Britain) since then. It produces anaesthesia, analgesia, and amnesia with preservation of respiratory protective reflexes. Reports of its use by non-anaesthetists for procedural sedation in children first appeared in the early 1990s. Now staff at two English accident and emergency …