title: Ketamine added to intravenous patient-controlled morphine: ketamine plasma concentration is unreliable.
authors.forename: A C
authors.initials: AC
authors.lastname: Van Elstraete
authors.forename: T
authors.initials: T
authors.lastname: Lebrun
mesh_terms: D016058:Analgesia, Patient-Controlled; D000700:Analgesics / Q000097:blood / Q000627:therapeutic use*; D000701:Analgesics, Opioid / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007649:Ketamine / Q000097:blood / Q000627:therapeutic use*; D008274:Magnesium / Q000008:administration & dosage / Q000627:therapeutic use; D009020:Morphine / Q000008:administration & dosage / Q000627:therapeutic use*; D010149:Postoperative Pain / Q000188:drug therapy
chemical_list: D000700:Analgesics; D000701:Analgesics, Opioid; D007649:Ketamine; D009020:Morphine; D008274:Magnesium