GlideScope Use improves intubation success rates: an observational study using propensity score matching

Area of Science:

• Anesthesiology
• Medical Devices
• Airway Management

Background:

• Rigid video laryngoscopes offer an alternative to direct laryngoscopy for tracheal intubation.
• Large-scale prospective studies are needed to compare video laryngoscopes with direct laryngoscopy in routine practice.

Purpose of the Study:

• To compare the first-pass success rate of the GlideScope video laryngoscope against direct laryngoscopy.
• To evaluate the GlideScope's effectiveness in reducing failed intubation incidents.

Main Methods:

• An observational study tracked 3831 intubation attempts comparing Macintosh/Miller laryngoscopes with the GlideScope.
• Propensity scoring matched 626 subjects based on morphologic traits to balance groups for analysis.

Main Results:

• Direct laryngoscopy achieved an 80.8% first-pass success rate.
• The GlideScope achieved a 93.6% first-pass success rate (p < 0.001).
• The GlideScope showed a 0.128 risk difference in first-pass success compared to direct laryngoscopy.

Conclusions:

• The GlideScope significantly increased the first-attempt success rate for tracheal intubation compared to direct laryngoscopy.
• The GlideScope achieved 99% success after initial direct laryngoscopy failure, reducing overall failed intubations.