title: Can the new McGrath laryngoscope rival the GlideScope Ranger portable video laryngoscope? A randomized manikin study.
abstract: OBJECTIVE
  We hypothesized that novices would be able to use the McGrath MAC (Aircraft Medical Ltd, Edinburgh, UK) equally as well as the GlideScope Ranger (Verathon, Inc, Bothell, WA) for intubation in regular simulated airways.
  
  
  METHODS
  We performed a prospective, randomized crossover study of 39 medical students using the McGrath MAC, GlideScope Ranger, and Macintosh in a manikin with 2 normal airways. The primary outcome was the intubation time. Secondary outcomes included the success rates and the overall glottic view of the 3 laryngoscopes.
  
  
  RESULTS
  The mean intubation times for each attempt with the McGrath MAC were 30.8 ± 16.9 seconds or less and did not differ significantly from those obtained with the GlideScope Ranger or the Macintosh in both airway scenarios (P = .18; P = .49). The mean success rates at each attempt with the McGrath MAC were 82.0% ± 38.8% or more, equal to the Macintosh and the GlideScope Ranger in both scenarios (P = .026; P = .72) except during the first intubation attempt in a normal airway (P = .008). The median grades of the glottic view visible at each intubation attempt with the McGrath Mac were Cormack-Lehane grade 1 (scenario 1: interquartile range, 1-1; scenario 2: interquartile range, 1-2), which was significantly better than the Macintosh laryngoscope in both scenarios. However, the McGrath Mac did not produce a better glottic view than the GlideScope Ranger with either scenario.
  
  
  CONCLUSIONS
  The intubation performance of novices using the McGrath MAC was equal to their performance using the GlideScope Ranger in regular simulated airways.
authors.affiliation: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea.
authors.forename: Wonhee
authors.initials: W
authors.lastname: Kim
authors.affiliation: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea. Electronic address: ardoc@hanyang.ac.kr.
authors.forename: Hyuk Joong
authors.initials: HJ
authors.lastname: Choi
authors.affiliation: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea.
authors.forename: Taeho
authors.initials: T
authors.lastname: Lim
authors.affiliation: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea.
authors.forename: Bo Seung
authors.initials: BS
authors.lastname: Kang
mesh_terms: D000328:Adult; D018592:Cross-Over Studies; D004504:Education, Medical, Undergraduate; D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D020704:Laryngoscopes; D008297:Male; D008348:Manikins; D013337:Students, Medical; D013997:Time Factors