title: Colonoscopy results are not enhanced by use of magnet endoguide in specialist practice.
abstract: BACKGROUND
  It is discussed whether the use of a magnetic positioning device (OLYMPUS; UPD (unit of magnetic positioning device)) enhances the success of the colonoscopic procedure. Concern for patient compliance and endoscopic efficiency has been voiced in connection with the implementation of colon cancer screening. UPD has been proposed as a tool for optimization of results and reduction of patient discomfort. In this study, we aimed to qualify the debate by examining the success rate and patient discomfort in an unselected colonoscopy population referred to specialist clinics with experienced investigators. Furthermore, the study assessed the effect of using a UPD.
  
  
  METHODS
  A total of 1,068 consecutive patients referred for colonoscopy were enrolled and randomised for investigation with or without use of UPD. The evaluation endpoints were: success rate (coecum visualised, ileal intubation was carried out at the investigator's discretion), duration of procedure, and patient discomfort indicated by the patient as a visual analogue scale score.
  
  
  RESULTS
  No significant differences between the two investigational procedures were demonstrated in relation to the chosen endpoints.
  
  
  CONCLUSIONS
  UPD is convenient to have, but not a necessity for colonoscopy.
  
  
  BACKGROUND
  The study was supported by the Danish Association of Medical Specialists.
  
  
  BACKGROUND
  The study was approved by the Danish Data Protection Agency, journal no. 2009-41-3716, the National Ethics Committee, journal no.: H-1-2009-80, and registered with ClinicalTrials.gov., protocol no: NCT01055782.
authors.affiliation: Rolighedsvej 47, 3460 Birkerød, Denmark.
authors.forename: Anders
authors.initials: A
authors.lastname: Bak-Christensen
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Knudsen
authors.forename: Jakob
authors.initials: J
authors.lastname: Hendel
authors.forename: Inge Bøtker-Rasmussen
authors.initials: IB
authors.lastname: Ifaoui
authors.forename: Lars
authors.initials: L
authors.lastname: Lehrskov-Schmidt
authors.forename: Lene
authors.initials: L
authors.lastname: Hendel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002432:Cecum; D003110:Colonic Neoplasms / Q000175:diagnosis*; D003113:Colonoscopy / Q000009:adverse effects / Q000295:instrumentation*; D055088:Early Detection of Cancer; D005260:Female; D006801:Humans; D007441:Intubation, Gastrointestinal; D059346:Magnets; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D010147:Pain Measurement; D055815:Young Adult