Obstetric anesthesia with trichlorethylene, nitrous oxide, and oxygen.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D000773:Anesthesia, Obstetrical; D005260:Female; D006801:Humans; D009609:Nitrous Oxide; D009774:Obstetrics; D010100:Oxygen; D059408:Pain Management; D011247:Pregnancy; D014241:Trichloroethylene
D014241:Trichloroethylene; D009609:Nitrous Oxide; D010100:Oxygen
ANESTHESIA, OBSTETRICAL; NITROUS OXIDE/anesthesia and analgesia; TRICHLOROETHYLENE/anesthesia and analgesia