title: A new small-calibre diagnostic flexible cystoscope.
abstract: OBJECTIVE
  To determine whether flexible cystoscopy with a prototype slim flexible instrument is less uncomfortable than flexible cystoscopy using a standard flexible cystoscope.
  
  
  METHODS
  In all, 200 men scheduled to undergo flexible cystoscopy for the follow-up of transitional cell carcinoma of the bladder were randomized in equal groups to flexible cystoscopy using the standard instrument or using the prototype slim-scope. Each patient had 11 mL of 2% lignocaine gel instilled intraurethrally 5 min before the procedure. At the end of the procedure the patient was asked to complete a 100-mm non-graphical visual analogue scale to rate how uncomfortable the procedure was.
  
  
  RESULTS
  The slim-scope was very significantly less uncomfortable than the conventional instrument (anova P < 0.001). The ease of use and views of the bladder were similar to those obtained with the conventional cystoscope.
  
  
  CONCLUSIONS
  The slim-scope offers a significant benefit in patient comfort, with little loss of image quality or ease of use.
authors.affiliation: Academic Urological Unit, The Royal London Hospital, London, UK. djdryhurst@mds.qmw.ac.uk
authors.forename: D J
authors.initials: DJ
authors.lastname: Dryhurst
authors.forename: C G
authors.initials: CG
authors.lastname: Fowler
mesh_terms: D002295:Carcinoma, Transitional Cell / Q000175:diagnosis; D020684:Cystoscopes / Q000009:adverse effects*; D004867:Equipment Design; D006801:Humans; D008297:Male; D010146:Pain / Q000209:etiology*; D010147:Pain Measurement; D017060:Patient Satisfaction; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis