Inhalation.
Nitrous oxide is used in a mixture with oxygen and other means for inhalation anesthesia with the help of special devices for gas anesthesia. Usually start with a mixture containing 70-80% Nitrous oxide and 20-30% oxygen.
To stop and prevent pain syndrome, medical anesthesia is carried out at a concentration of nitrous oxide 40-75%. To quickly achieve the required depth general anesthesia (lead anesthesia) concentration of dinitrogen oxide - 70-75%, maintenance of general anesthesia - 40-50%; if necessary - add more powerful drugs: barbiturates, fluorotane, ether. After stopping the supply of dinitrogen oxide, you should continue to supply oxygen for 4-5 minutes (to avoid diffusion hypoxia).
For the anesthesia of childbirth use the method of intermittent autoanalgesia using a mixture of dinitrogen oxide (40-75%) and oxygen: the mother gives birth to inhaling the mixture at the appearance of harbingers of the fight and ends the inhalation at the height of the bout or to its end.
To perform medical procedures that require disconnection of consciousness - inhalation of 25-50% of the mixture with oxygen. For children, doses are selected individually.
Inhalation of the mixture can be at an oxygen content of at least 30%, and after stopping inhalation, it is necessary to continue supplying oxygen for 5 minutes (prevention of hypoxia). To reduce emotional excitement, prevent nausea and vomiting and potentiation of the action, a premedication is shown: intravenous injection of a 0.5 ml solution of diazepam (5-10 mg), 2-3 ml of 0.25% solution of droperidol (5, 0-7.5 mg).