title: Postoperative analgesia using continuous infusion of papaveretum.
mesh_terms: D000628:Aminophylline / Q000008:administration & dosage*; D004315:Doxapram / Q000008:administration & dosage*; D006801:Humans; D007263:Infusions, Parenteral; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D000628:Aminophylline; D004315:Doxapram