title: Pre-emptive analgesia--why the evidence is conflicting.
authors.forename: N A
authors.initials: NA
authors.lastname: Randhawa
authors.forename: P P
authors.initials: PP
authors.lastname: Bapat
mesh_terms: D018712:Analgesics, Non-Narcotic / Q000627:therapeutic use; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D000818:Animals; D004334:Drug Administration Schedule; D006801:Humans; D009609:Nitrous Oxide / Q000627:therapeutic use; D010149:Postoperative Pain / Q000517:prevention & control*; D051381:Rats
chemical_list: D018712:Analgesics, Non-Narcotic; D000701:Analgesics, Opioid; D009609:Nitrous Oxide