title: [Influence of intraoperative noise protection on postoperative pain: demonstrated exemplified by total knee arthroplasty].
abstract: BACKGROUND
  It is known that implied memory of intraoperative noise influences postoperative pain. The aim of this study was to evaluate the influence of different intraoperative noise protection methods during total knee arthroplasty on postoperative pain scores.
  
  
  METHODS
  A total of 83 patients were included in this prospectively designed, double-blind trial and underwent total knee arthroplasty with psoas compartment and sciatic nerve regional anesthesia and additionally propofol sedation. After randomization patients were assigned either to the noise protection group, the music group or the control group. Postoperative pain scores (VAS) were evaluated in each group.
  
  
  RESULTS
  In the three different time intervals evaluated there were no significant differences between the groups. Also the pain maxima for each postoperative day showed no significant difference but there was a slight trend to the advantage of the music group.
  
  
  CONCLUSIONS
  Even though there were no significant effects of music or noise protection on postoperative pain scores, it can be concluded, as has been done by many other authors that music should be used in the perioperative setting for general patient comfort.
authors.affiliation: Orthopädische Klinik, Universität Regensburg im Asklepios Klinikum Bad Abbach, Kaiser-Karl-V.-Allee 3, 93077, Bad Abbach, Deutschland, a.keshmiri@asklepios.com.
authors.forename: A
authors.initials: A
authors.lastname: Keshmiri
authors.forename: T
authors.initials: T
authors.lastname: Wolf
authors.forename: O
authors.initials: O
authors.lastname: Wiech
authors.forename: A
authors.initials: A
authors.lastname: Benditz
authors.forename: J
authors.initials: J
authors.lastname: Grifka
authors.forename: H
authors.initials: H
authors.lastname: Springorum
mesh_terms: D000368:Aged; D000765:Anesthesia, Conduction; D019645:Arthroplasty, Replacement, Knee; D016292:Procedural Sedation; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D009147:Music Therapy; D009622:Noise / Q000009:adverse effects* / Q000517:prevention & control*; D010147:Pain Measurement; D010149:Postoperative Pain / Q000209:etiology* / Q000517:prevention & control*; D015742:Propofol; D011446:Prospective Studies; D016037:Single-Blind Method
chemical_list: D015742:Propofol