Normal risks in the use of nitrous oxide and oxygen.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D000776:Anesthesiology; D009609:Nitrous Oxide; D010100:Oxygen; D059408:Pain Management
D009609:Nitrous Oxide; D010100:Oxygen
NITROUS OXIDE/anesthesia and analgesia