Efficacy of Premixed Nitrous Oxide and Oxygen in Patient With Out-of-hospital Moderate Acute Pain

Less than 10% of patients with a traumatic pain have been managed by a physician before to be admitted in an emergency service. 50 % of those patients have been carried by paramedics. Premixed nitrous oxide and oxygen is often used by paramedics, but no scientific studies have demonstrated its efficacy. The aim of the study is to demonstrate the efficacy of premixed nitrous oxide and oxygen in patients with out-of-hospital moderate acute pain.