The practice of conscious sedation by inhalation of an equimolar mixture of oxygen and nitrous oxide is one of the most widely used methods of reducing or eliminating anxiety in phobic or disabled patients. Since 2009, the MOEPA has been off the hospital reserve and is licensed for use in private practice. First of all, this work deals with the properties, indications and contraindications and regulations of the MOEPA. In order to improve knowledge...