Related Experiment Video
Updated: May 27, 2026

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
Published on: December 1, 2023
[Glidescope: a comparison of percentage of glottic opening score between middle size and large size handles]
Nobuhiro Shimada1, Yoshihiro Hibayashi, Norimasa Seo
1Department of Anesthesiology and Critical Care Medicine, Jichi Medical University, Shimotsuke 329-0498.
Background:
The aim of the present study was to compare the percent of glottic opening score between middle-size (#3) and large-size (#4) handles during laryngoscopy using the GlideScope videolaryngoscope (GVL) in Japanese women.
Methods:
In 80 Japanese women receiving general anesthesia for surgical procedures, laryngoscopy was performed using GVL #3 handle and GVL #4 handle. We compared the percentage of glottic opening score between the two handles on each patient.
Results:
The percentage of glottic opening score was higher with GVL #3 handle than with GVL #4 handle [66 +/- 28% (mean +/- SD), vs. 53 +/- 34%, P < 0.05).
Conclusions:
The use of GVL #3 handle is recommended for tracheal intubation for Japanese women.
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