Related Experiment Video
Updated: Feb 4, 2026

The Rigid Tube as an Alternative in Controlling the Problematic Airway
Published on: June 6, 2020
Comparison of AceScope With Tube-Channelled Blade Versus McGRATH MAC Video Laryngoscope With Non-channelled Blade in
Tomomi Ishii1, Takashi Kondo1, Sachiko Otsuki1
1Department of Anesthesiology and Critical Care, Hiroshima University Hospital, Hiroshima, JPN.
Background And Objectives:
The AceScope (Ace Medical Co., Ltd, Seoul, Republic of Korea) is a new Macintosh video laryngoscope equipped with a tube-channelled type blade. This study aimed to evaluate the effectiveness of the AceScope with a tube-channelled type blade compared to the McGRATH MAC video laryngoscope (Medtronic plc, Galway, Ireland) with a non-channelled type blade in a difficult airway model.
Materials And Methods:
Twelve experienced anesthesiologists performed tracheal intubation on a difficult airway manikin using both devices. The primary outcome measured was intubation time. Secondary outcomes included user satisfaction, intubation success rate, and dental damage rate.
Results:
The AceScope with a tube-channelled type blade significantly reduced intubation time compared to the McGRATH with a non-channelled type blade (16 vs. 19 seconds, p=0.04). There were no significant differences in user satisfaction or intubation success rates between the two devices, and no tooth injuries were observed with either device.
Conclusions:
The AceScope with a tube-channelled type blade is more effective in reducing intubation time in difficult airway scenarios than the McGRATH with a non-channelled type blade. However, these findings are limited to manikin models.
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