title: Magnetic endoscopic imaging versus standard colonoscopy in a routine colonoscopy setting: a randomized, controlled trial.
abstract: BACKGROUND
  Knowing the position of the endoscope within the abdomen is important for performing a high-quality, painless colonoscopy. The recently introduced magnetic endoscopic imaging (MEI) system provides a continuous, real-time image of the endoscope during the entire procedure.
  
  
  OBJECTIVE
  To compare MEI versus standard colonoscopy with on-demand fluoroscopy on unsedated patients, as performed by experienced and inexperienced endoscopists.
  
  
  METHODS
  Randomized, controlled trial.
  
  
  METHODS
  Endoscopy outpatient clinic.
  
  
  METHODS
  This study involved 810 consecutive patients (391 randomized to standard group; 419 randomized to MEI) referred for colonoscopy.
  
  
  METHODS
  MEI or standard approach (involving on-demand fluoroscopy) during colonoscopy.
  
  
  METHODS
  Perceived patient pain and cecal intubation rate and time to cecum.
  
  
  RESULTS
  For inexperienced endoscopists, the cecal intubation rate was significantly higher in the MEI group (77.8%) compared with the standard group (56.0%), P = .02 but not for experienced endoscopists (94.0% for MEI and 96.0% for standard group, P = .87). Inexperienced endoscopists had less need for assistance from a senior colleague when they used MEI (18.5%) compared with the standard technique (40.0%), P = .02. Mean (± standard deviation) time to reach the cecum was 14.0 ± 12.2 minutes in the MEI group and 15.3 ± 14.2 minutes in the standard group, P = .67.
  
  
  CONCLUSIONS
  Single center, unblinded study.
  
  
  CONCLUSIONS
  Inexperienced endoscopists improved their colonoscopy performance when they used MEI, compared with the standard technique, but experienced endoscopists did not. The MEI may be advantageous to use for colonoscopy centers educating endoscopists. (
  
  
  BACKGROUND
  NCT00519129.).
authors.affiliation: Department of Medicine, Sorlandet Hospital Kristiansand, Kristiansand, Norway. oyvind.holme@sshf.no
authors.forename: Öyvind
authors.initials: Ö
authors.lastname: Holme
authors.forename: Ole
authors.initials: O
authors.lastname: Höie
authors.forename: Jon
authors.initials: J
authors.lastname: Matre
authors.forename: Asbjörn
authors.initials: A
authors.lastname: Stallemo
authors.forename: Kjetil
authors.initials: K
authors.lastname: Garborg
authors.forename: Audun
authors.initials: A
authors.lastname: Hasund
authors.forename: Haavard
authors.initials: H
authors.lastname: Wiig
authors.forename: Geir
authors.initials: G
authors.lastname: Hoff
authors.forename: Michael
authors.initials: M
authors.lastname: Bretthauer
mesh_terms: D015746:Abdominal Pain / Q000209:etiology*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002432:Cecum; D002983:Clinical Competence; D003113:Colonoscopy / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008280:Magnetics / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D013647:Task Performance and Analysis; D013997:Time Factors; D055815:Young Adult