Comparison of AceScope With Tube-Channelled Blade Versus McGRATH MAC Video Laryngoscope With Non-channelled Blade in a Difficult-Airway Manikin Model

TL;DR

This study compares two video laryngoscopes in a simulated difficult airway scenario and finds one reduces intubation time.

Contribution

The study introduces a new video laryngoscope with a tube-channelled blade and evaluates its performance in a manikin model.

Findings

AceScope reduced intubation time by 3 seconds compared to McGRATH in difficult airway scenarios.

No significant differences were found in user satisfaction or intubation success rates between the two devices.

Neither device caused dental damage in the manikin model.

Abstract

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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