title: Baby Shampoo versus Commercial Anti-fogging Solution to Prevent Fogging during Nasal Endoscopy: A Randomized Double-Blinded, Matched-Pair, Equivalent Trial.
abstract: OBJECTIVE
  To compare the minimization of the fog condensation during nasal endoscopy between a commercial anti-fogging agent and baby shampoo.
  
  
  METHODS
  This randomized double-blinded matched pair study was conducted at the Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University during February 4, 2013 to March 14, 2013. The commercial anti-fogging solution (Ultrastop®) and baby shampoo solution (Johnson's® no more tear®) were compared. A computer generated randomization was performed to select the solution applying on the lens for nasal endoscopy of the right nasal cavity. The other solution was then used for the left one. Three passes of endoscopy were performed to examine the floor of the nose, the sphenoethmoidal recess and the middle meatus area which spent about 30 seconds for each time of endoscopy. The time to become foggy on the lens and the preferred solution assessed by the endoscopists were recorded.
  
  
  RESULTS
  There were 71 eligible patients recruited in the study, 37 males (52.1%) and 34 females (47.9%). There was no fogging during a 30-second nasal endoscopy either by baby shampoo or commercial anti-fogging solution. However, 9.86% (95% C12.75-16.97) of endoscopists preferred commercial anti-fogging agent, 7.04% (95% CI 0.94-13.14) preferred baby shampoo and 83.10% (95% CI 74.16-92.03) had equal satisfaction. Both agents had no statistically significant difference for preventing foggy on the lens.
  
  
  CONCLUSIONS
  Baby shampoo is an effective agent to prevent fogging during nasal endoscopy and comparable with the commercial anti-fogging agent.
authors.forename: Seksun
authors.initials: S
authors.lastname: Chainansamit
authors.forename: Patorn
authors.initials: P
authors.lastname: Piromchai
authors.forename: Intira
authors.initials: I
authors.lastname: Anantpinijwatna
authors.forename: Pornthep
authors.initials: P
authors.lastname: Kasemsiri
authors.forename: Sanguansak
authors.initials: S
authors.lastname: Thanaviratananich
mesh_terms: D000293:Adolescent; D000328:Adult; D004311:Double-Blind Method; D004724:Endoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009666:Nose; D012915:Soaps; D012996:Solutions; D013785:Thailand; D055815:Young Adult
chemical_list: D012915:Soaps; D012996:Solutions