title: Comparison of the GlideRite to the conventional malleable stylet for endotracheal intubation by the Macintosh laryngoscope: a simulation study using manikins.
abstract: OBJECTIVE
  To compare the effectiveness of the GlideRite stylet with the conventional malleable stylet (CMS) in endotracheal intubation (ETI) by the Macintosh laryngoscope.
  
  
  METHODS
  This study is a randomized, crossover, simulation study. Participants performed ETI using both the GlideRite stylet and the CMS in a normal airway model and a tongue edema model (simulated difficult airway resulting in lower percentage of glottic opening [POGO]).
  
  
  RESULTS
  In both the normal and tongue edema models, all 36 participants successfully performed ETI with the two stylets on the first attempt. In the normal airway model, there was no difference in time required for ETI (TETI) or in ease of handling between the two stylets. In the tongue edema model, the TETIusing the CMS increased as the POGO score decreased (POGO score was negatively correlated with TETIfor the CMS, Spearman's rho=-0.518, P=0.001); this difference was not seen with the GlideRite (rho=-0.208, P=0.224). The TETIwas shorter with the GlideRite than with the CMS, however, this difference was not statistically significant (15.1 vs. 18.8 seconds, P=0.385). Ease of handling was superior with the GlideRite compared with the CMS (P=0.006).
  
  
  CONCLUSIONS
  Performance of the GlideRite and the CMS were not different in the normal airway model. However, in the simulated difficult airway model with a low POGO score, the GlideRite performed better than the CMS for direct laryngoscopic intubation.
authors.affiliation: Department of Emergency Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Yong Tack
authors.initials: YT
authors.lastname: Kong
authors.affiliation: Department of Emergency Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Hyun Jung
authors.initials: HJ
authors.lastname: Lee
authors.affiliation: Department of Emergency Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Ji Ung
authors.initials: JU
authors.lastname: Na
authors.affiliation: Department of Emergency Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Dong Hyuk
authors.initials: DH
authors.lastname: Shin
authors.affiliation: Department of Emergency Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Sang Kuk
authors.initials: SK
authors.lastname: Han
authors.affiliation: Department of Emergency Medicine, Dongguk University College of Medicine, Goyang, Korea.
authors.forename: Jeong Hun
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Emergency Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Pil Cho
authors.initials: PC
authors.lastname: Choi
keywords: Instrumentation; Intubation, intratracheal; Manikins