title: Utility of the Aintree Intubation Catheter in fiberoptic tracheal intubation through the three types of intubating supraglottic airways: a manikin simulation study.
abstract: OBJECTIVE
  The purpose of this study was to examine the utility of the Aintree Intubation Catheter (AIC) with three types of supraglottic airway devices for tracheal intubation (ISGAs) using a manikin.
  
  
  METHODS
  Participants were 21 anesthesiologists with more than 2 years of experience in clinical anesthesia. Three types of ISGAs were passed through the glottis: Fastrack-Single Use (FSU; size 4), air-Q (size 3.5), and i-gel (size 4). Participants attempted fiberoptic tracheal intubation with the ISGAs in random order. Success rate of tracheal intubation, intubation time, and collision with the glottis were recorded. Participants also evaluated the subjective difficulty of the entire intubation process and passing the tracheal tube through the glottis using a Visual Analogue Scale.
  
  
  RESULTS
  The FSU required a significantly longer time for intubation compared with the other two ISGAs (p < 0.05). AIC use did not significantly improve the success rate of intubation or shorten intubation times for any of the ISGAs. However, there were significantly more collisions with the glottis without AIC use for the FSU and air-Q compared to when they were used with the AIC (FSU, p = 0.015; air-Q, p = 0.025).
  
  
  CONCLUSIONS
  Among the ISGAs tested, intubation took longer with the FSU, and the FSU had a higher failure rate than the other ISGAs. AIC significantly decreased the number of collisions with the FSU and air-Q. These findings suggest that the AIC is effective in reducing collisions with the tracheal tube and thus will reduce the risk of mechanical injury to the airway.
authors.affiliation: Department of Anesthesiology, Hyogo College of Medicine, Mukogawa-cho 1-1, Nishinomiya, Hyogo, 663-8501, Japan, rueki@hyo-med.ac.jp.
authors.forename: Ryusuke
authors.initials: R
authors.lastname: Ueki
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Komasawa
authors.forename: Kenta
authors.initials: K
authors.lastname: Nishimoto
authors.forename: Takashi
authors.initials: T
authors.lastname: Sugi
authors.forename: Munetaka
authors.initials: M
authors.lastname: Hirose
authors.forename: Yoshiroh
authors.initials: Y
authors.lastname: Kaminoh
mesh_terms: D000328:Adult; D000758:Anesthesia; D000776:Anesthesiology / Q000295:instrumentation; D057785:Catheters; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005931:Glottis / Q000033:anatomy & histology; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D008297:Male; D008348:Manikins; D012121:Respiration, Artificial / Q000295:instrumentation