Comparing Success Rate of Tracheal Intubation by Medical Students with Direct Laryngoscope or Glidescope® Video-guided Laryngoscope with Manual-in-line Stabilization

Main Article Content

Wanida Chongarunngamsang


Background: Trachial intubation with a difficulty airway
patient using direct laryngoscope has a high failure rate
when performed by an inexperienced medical personnel.
A Video-guided laryngoscope provides a better glottic
visualization in order to reduce the failure rate of intubation.
Objective: To compare the success rate of tracheal
intubation of manikin with manual-in-line stabilization using
direct laryngoscope or video-guided laryngoscope by
inexperienced medical students.
Methods: This study is a prospective randomized
controlled trial. One hundred and twenty untrained 5th year
medical students were randomly allocated either to direct
laryngoscope (DL) or video-guided laryngoscope (VG)
group. Success rate of intubation, time for intubation,
laryngeal view, dental injury and student’s satisfaction of
equipment were recorded.
Results: The success rate of intubation was significantly
higher in VG group than DL group (95% vs 80%, p=0.013) as
well as grade 1 glottic visualization (38.3% vs 18.3%, p=0.02).
Positive correlation between satisfaction and laryngeal view
was found. However, intubation time, dental injury and
satisfaction of equipment were not different between groups.

Conclusions: The use of video-guided laryngoscope
improved the success rate of manual-in-line stabilization
tracheal intubation in manikin by inexperienced medical
students. It also provided better glottic visualization
compared to the direct laryngoscope.

Article Details

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