title: Buprenorphine-supplemented anesthesia in abdominal surgery.
mesh_terms: D000328:Adult; D000770:Anesthesia, Endotracheal; D002047:Buprenorphine / Q000008:administration & dosage*; D006801:Humans; D007275:Injections, Intravenous; D008875:Middle Aged; D009019:Morphinans / Q000008:administration & dosage*; D009609:Nitrous Oxide
chemical_list: D009019:Morphinans; D002047:Buprenorphine; D009609:Nitrous Oxide