Tracheal intubation with GlideScope vs. Sanyar video laryngoscopes in adults with predicted difficult intubation: a non-inferiority clinical trial.

Abstract

Introduction: Maintaining control over the airway is critical during general anesthesia induction, particularly in patients with anticipated difficult airways. Video laryngoscopy with various devices has emerged as a valuable tool in such scenarios and has shown promising performance. This study aimed to evaluate glottic visualization and the first attempt success rate of tracheal intubation of GlideScope and Sanyar video laryngo- scopes in adult patients with predicted difficult intubation.

Material and methods: A randomized, controlled, two-armed, parallel clinical trial was conducted, in adult patients with anticipated difficult intubation undergoing elective surgery under general anesthesia. Participants were randomly assigned to either the GlideScope or Sanyar group. The primary outcome was the success rate of intubation in the first attempt at laryngoscopy, and secondary outcomes were the duration of intubation, glottic visualization, blood pressure and heart rate after intubation.

Results: A total of 93 patients were included in the analysis, with 46 in the S group and 47 in the G group. The S group demonstrated a significantly higher first-attempt success rate of tracheal intubation (93.4% vs. 85.2%; P = 0.002) and shorter intubation time (29.28 ± 8.00 seconds vs. 42.73 ± 15.50 seconds; P = 0.0001) compared to the G group. Glottic visualization and hemodynamic changes did not significantly differ between the two groups.

Conclusions: The Sanyar video laryngoscope exhibited superior efficacy in terms of first-attempt tracheal intubation success and shorter intubation time compared to the GlideScope in adult patients with predicted difficult airways. These findings suggest that the Sanyar video laryngoscope may serve as a valuable alternative in challenging intubation scenarios.