title: Clinical advantages of fentanyl given epidurally for postoperative analgesia.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D004824:Epidural Space; D005283:Fentanyl / Q000008:administration & dosage* / Q000378:metabolism; D006801:Humans; D007273:Injections, Intramuscular; D010149:Postoperative Pain / Q000188:drug therapy*; D012119:Respiration / Q000187:drug effects
chemical_list: D002245:Carbon Dioxide; D005283:Fentanyl