title: Postoperative analgesia.
mesh_terms: D000005:Abdomen / Q000601:surgery; D000698:Analgesia; D006801:Humans; D007275:Injections, Intravenous; D009294:Narcotics / Q000008:administration & dosage*; D011182:Postoperative Care
chemical_list: D009294:Narcotics