Preoperative use of a combination of levo-dromoran tartrate and a new narcotic antagonist.
D000758:Anesthesia; D000776:Anesthesiology; D007981:Levorphanol; D008910:Minnesota; D009022:Morphine Derivatives; D009292:Narcotic Antagonists; D013644:Tartrates
D009022:Morphine Derivatives; D009292:Narcotic Antagonists; D013644:Tartrates; D007981:Levorphanol; C029768:tartaric acid
ANESTHESIA; MORPHINE/derivatives