title: [Middle ear pressure variations during anesthesia with nitrous oxide].
mesh_terms: D000158:Acoustic Impedance Tests; D000769:Anesthesia, Inhalation; D004058:Diffusion; D004432:Ear, Middle / Q000502:physiology*; D006801:Humans; D008365:Manometry; D009609:Nitrous Oxide
chemical_list: D009609:Nitrous Oxide