title: Clinical effects of nitrous oxide and oxygen mixtures at sea-level and at 1700 metres altitude.
abstract: The effects of nitrous oxide, at sea-level and at an altitude of 1700 m, were assessed on a subjective and objective basis. Only marginal differences were shown between the effects of the gas at sea-level and 1700 m. Since consciousness was impaired with 60 and 70% nitrous oxide it is suggested that the use of Entonox-oxygen mixtures should be considered for single-handed operators.
mesh_terms: D000328:Adult; D000531:Altitude; D000769:Anesthesia, Inhalation; D003243:Consciousness / Q000187:drug effects; D006801:Humans; D009609:Nitrous Oxide / Q000494:pharmacology*; D010100:Oxygen / Q000494:pharmacology*
chemical_list: D009609:Nitrous Oxide; D010100:Oxygen