title: Use of butorphanol tartrate in balanced anesthesia.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000765:Anesthesia, Conduction; D000771:Anesthesia, Intravenous; D000773:Anesthesia, Obstetrical; D002077:Butorphanol / Q000031:analogs & derivatives; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009019:Morphinans; D011247:Pregnancy
chemical_list: D009019:Morphinans; D002077:Butorphanol