title: Does ketamine improve postoperative analgesia? More questions than answers.
authors.forename: Kurt W
authors.initials: KW
authors.lastname: Grathwohl
mesh_terms: D000698:Analgesia / Q000379:methods*; D000700:Analgesics / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007649:Ketamine / Q000627:therapeutic use*; D008297:Male; D009294:Narcotics / Q000627:therapeutic use*; D010149:Postoperative Pain / Q000188:drug therapy*; D013131:Spine / Q000601:surgery*
chemical_list: D000700:Analgesics; D009294:Narcotics; D007649:Ketamine