title: Comparison of fluid leakage from four different cuffed pediatric endotracheal tubes using a pediatric airway simulation model.
abstract: This study used an airway model to compare the ability of a pediatric endotracheal tube with a taper-shaped cuff to prevent microaspiration relative to endotracheal tubes with conventional cuffs. Four different types of 5.0-mm inner diameter cuffed pediatric endotracheal tubes (taper-shaped cuff [Taper], high-volume low-pressure [Hi-Lo], middle-volume low-pressure [Intermediate], and low-volume low-profile [Lo-Pro]) were fixed within vertically placed acrylic tubes. The cuffs were maintained at 10, 20, or 30 cmH2 O pressure and 3 mL of simulated stomach contents was added to the top of the cuffs. The volume of leakage around the cuffs after 5 min and 4 h was measured. After 5 min, the volume of leakage was significantly lower with the Taper than with the Hi-Lo, Intermediate, or Lo-Pro at all pressure settings. After 4 h, leakage was significantly lower with the Taper than with the other three tubes regardless of initial cuff pressure (P < 0.05).
authors.affiliation: Department of Anesthesiology, Osaka Medical College, Osaka, Japan.
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Komasawa
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Fujiwara
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Miyazaki
authors.forename: Masako
authors.initials: M
authors.lastname: Soen
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Minami
mesh_terms: D004867:Equipment Design; D004868:Equipment Failure; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D008953:Models, Anatomic; D010372:Pediatrics; D053717:Pneumonia, Ventilator-Associated / Q000209:etiology; D014132:Trachea
keywords: fluid leakage; pediatric endotracheal tube; taper-shaped cuff; ventilation-associated pneumonia