[Apparatus for nitrous-oxide analgesia].
D000769:Anesthesia, Inhalation; D000773:Anesthesia, Obstetrical / Q000295:instrumentation*; D005260:Female; D006801:Humans; D009609:Nitrous Oxide; D010100:Oxygen; D011247:Pregnancy; D012122:Ventilators, Mechanical
D009609:Nitrous Oxide; D010100:Oxygen
Apparater för lustgas-analgesi.