title: Improved, but not preemptive, analgesia.
authors.forename: M D
authors.initials: MD
authors.lastname: Daley
authors.forename: P H
authors.initials: PH
authors.lastname: Norman
mesh_terms: D015360:Analgesia, Epidural; D000700:Analgesics / Q000009:adverse effects / Q000627:therapeutic use*; D000701:Analgesics, Opioid / Q000008:administration & dosage / Q000493:pharmacokinetics / Q000627:therapeutic use*; D006801:Humans; D007275:Injections, Intravenous; D007649:Ketamine / Q000009:adverse effects / Q000627:therapeutic use*; D009020:Morphine / Q000008:administration & dosage / Q000493:pharmacokinetics / Q000627:therapeutic use*; D009270:Naloxone / Q000494:pharmacology; D009292:Narcotic Antagonists / Q000494:pharmacology; D010149:Postoperative Pain / Q000517:prevention & control*
chemical_list: D000700:Analgesics; D000701:Analgesics, Opioid; D009292:Narcotic Antagonists; D009270:Naloxone; D007649:Ketamine; D009020:Morphine