title: Rigid videosigmoidoscopy vs conventional sigmoidoscopy. A randomized controlled study.
abstract: BACKGROUND
  Not only is rigid sigmoidoscopy uncomfortable for patients, but visualisation of the rectosigmoid junction and sigmoid colon is successful in only 40-70% of examinations. A novel fine-bore rigid videosigmoidoscope is described and then compared with a rigid conventional sigmoidoscope for patient discomfort and length of insertion.
  
  
  METHODS
  A total of 58 patients were examined with both sigmoidoscopes in a random order. Discomfort was scored on a visual analogue scale; length of insertion was scored by the surgeon. Patients were blinded to which sigmoidoscope was being used. The images from the video examination were transmitted in real time for a second opinion in a different hospital.
  
  
  RESULTS
  The mean (SD) insertion distance of the videosigmoidoscope was 23.2 (5.9) cm, which was significantly further than with the conventional sigmoidosocpe 16.5 (3.8) cm (p < 0.01). The discomfort on a visual analogue score for the videosigmoidoscope was 3.0 (1.8), which was significantly less than for the conventional sigmoidoscope 5.5 (2.7) (p < 0.01). The five users of the equipment (four surgeons and one colorectal nurse practitioner) preferred the videosigmoidoscope for image quality and ease of examination.
  
  
  CONCLUSIONS
  A thinner, longer, rigid videosigmoidoscope is a more effective means of looking at the proximal sigmoid colon. Despite being inserted further, it caused less discomfort than the conventional sigmoidoscope. High-quality video images can be recorded or transmitted for real-time teleconsultation.
authors.affiliation: Academic Surgical Unit, 10th Floor, QEQM Wing, Saint Mary's Hospital, South Wharf Road, London W2 1NY, UK.
authors.forename: N J
authors.initials: NJ
authors.lastname: Taffinder
authors.forename: S W
authors.initials: SW
authors.lastname: Gould
authors.forename: A C
authors.initials: AC
authors.lastname: Wan
authors.forename: P
authors.initials: P
authors.lastname: Taylor
authors.forename: A
authors.initials: A
authors.lastname: Darzi
mesh_terms: D006801:Humans; D017060:Patient Satisfaction; D011446:Prospective Studies; D020694:Sigmoidoscopes; D012812:Sigmoidoscopy / Q000379:methods; D017216:Telemedicine; D014741:Video Recording