Despite increasing the likelihood of a Cormack-Lehane grade 1 view, pooled results from the studies showed no difference between the Pentax Airway Scope and standard Macintosh laryngoscope for:

• Rate of intubation on first attempt.
• Time for intubation.
• Incidence of oral or pharyngeal injury.

summary

• H Hoshijima, N Kuratani, Y Hirabayashi, R Takeuchi, T Shiga, and E Masaki.
• Division of Dento-Oral Anaesthesiology, Tohoku University Graduate School of Dentistry, Miyagi, Japan.
• Anaesthesia. 2014 Aug 1;69(8):911-8.

AbstractThe Pentax Airway Scope(®) is a single-use optical videolaryngoscope designed to assist with difficult tracheal intubation. We systematically reviewed the efficacy of the Pentax Airway Scope with that of a conventional laryngoscope for tracheal intubation in adults with 'normal' and 'difficult' airways. We included 17 randomised controlled trials with a total of 1801 participants. We used the DerSimonian and Laird random-effects model to calculate pooled relative risk or weighted mean differences. The relative risk (95% CI) of a Cormack-Lehane grade-1 laryngeal view was 2.40 (1.76-2.49) with the Pentax Airway Scope compared with the Macintosh laryngoscope, p < 0.00001. We found no other differences between the two laryngoscopes. Despite a superior laryngeal view, the Pentax Airway Scope provides little clinical benefit over the conventional laryngoscope.© 2014 The Association of Anaesthetists of Great Britain and Ireland.

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