title: [To distinguish true glottic opening using laryngoscope is very difficult for probationers].
abstract: BACKGROUND
  The video intubating laryngoscope (VIL) can share information with co-workers, that otherwise only one probationer could obtain. Tracheal intubation was reviewed using recorded videotapes via VIL. It was supposed that the esophageal changes by laryngoscope might cause esophageal intubation. In this study, we investigated the impressions about the changed esophagus caused by laryngoscope, and our purpose is to find better educational method for tracheal intubation.
  
  
  METHODS
  We randomly selected 21 first year junior residents for inexperienced group and 12 expert anesthesiologists for expert group, respectively. They were asked one questionnaire; "What do you think of it?" about three snapshots (A, B, C) recorded by VIL. Each answer was compared in both groups.
  
  
  RESULTS
  The percentage of correct answers to snapshot A were 19% and 50% (P = 0.065) in inexperienced group and expert group; snapshot B, 14% and 50% (P = 0.026); and snapshot C, 14% and 92% (P < 0.0001), respectively.
  
  
  CONCLUSIONS
  It was clarified that probationers significantly more often recognized the changed esophagus as the glottis opening. It is very important for us to teach and emphasize those points when we instruct the inexperienced in tracheal intubation.
authors.affiliation: Department of Anesthesiology and Critical Care Medicine, Jichi Medical University, Shimotsuke 329-0498.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Satoh
authors.forename: Kouichi
authors.initials: K
authors.lastname: Mogi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Hirabayashi
authors.forename: Norimasa
authors.initials: N
authors.lastname: Seo
mesh_terms: D000776:Anesthesiology / Q000193:education*; D004503:Education, Medical, Graduate / Q000379:methods*; D006801:Humans; D007396:Internship and Residency; D007442:Intubation, Intratracheal / Q000379:methods*; D020704:Laryngoscopes; D011795:Surveys and Questionnaires; D014741:Video Recording