title: [Difference in nitrous oxide-mediated increases in intracuff pressure between two tracheal tubes in a simulated pediatric lung model].
abstract: BACKGROUND
  The purpose of this study was to compare the nitrous oxide-mediated increases in cuff pressure between a tracheal tube with a tapered cuff (Taper) or conventional high volume low pressure cuff (HVLP) utilizing a simulated pediatric lung model.
  
  
  METHODS
  The automated cuff pressures were adjusted to 10, 20, and 30 cmH2O. The Taper and HVLP were exposed to 80% nitrous oxide and cuff pressure was measured 15 and 30 minutes later.
  
  
  RESULTS
  The cuff pressure of the Taper was significantly lower than that of the HVLP after 15 and 30 minutes, regardless of the initial pressure.
  
  
  CONCLUSIONS
  These findings suggest that the Taper may be more effective than the HVLP in preventing hyperinflation of the tracheal tube cuff in response to nitrous oxide exposure in children.
authors.forename: Kenta
authors.initials: K
authors.lastname: Nakao
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Komasawa
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Fujiwara
authors.forename: Masako
authors.initials: M
authors.lastname: Soen
authors.forename: Shinichi
authors.initials: S
authors.lastname: Tatsumi
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Sawai
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Minami
mesh_terms: D002648:Child; D004867:Equipment Design; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D008168:Lung / Q000502:physiology*; D008953:Models, Anatomic; D009609:Nitrous Oxide / Q000032:analysis*; D011312:Pressure
chemical_list: D009609:Nitrous Oxide