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Updated: Apr 30, 2026

The Rigid Tube as an Alternative in Controlling the Problematic Airway
Published on: June 6, 2020
[Video-laryngoscope (McGRATH MAC): a clinical assessment of its performance in consecutive 100 patients]
Background:
The McGRATH MAC Video laryngoscope (Covidien Japan) is a relatively new device for tracheal intubation, which provides an excellent glottis view. We here report the clinical experience of the McGRATH in 100 patients who received general anesthesia.
Methods:
Tracheal intubation with the McGRATH was performed in 100 patients requiring oro/naso tracheal intubation. The view of glottic opening was scored according to the classification of Cormack-Lehane. The time required to intubate and the number of intubation attempts were recorded.
Results:
Cormack-Lehane classification 1 or 2 was obtained in 99 of 100 patients, respectively, and successful intubation was achieved in all patients. The mean +/- SD time to successful intubation was 40 +/- 19 seconds.
Conclusions:
The McGRATH was easily handled not only by experienced anesthetists but also by novice personnel. The McGRATH seems to be a useful device in routine and difficult airway management.
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