The investigators belief is that the use of an opioid with advantageous pharmacokinetic properties and powerful analgesic effect as an adjunctive therapy during the course of external cephalic version procedures may become an efficacious and safe alternative, leading to increased pain relief and improved external cephalic version success rates. Its use requires, however, specific personnel and organizational facilities such as access to anesthetic support that can impede its widespread use. Therefore, the investigators is committed to explore feasibility and practical implementation factors as well as comparative efficacy and safety of this approach in non-cephalic presentation.