Comparison of Macintosh Laryngoscope and GlideScope® for Orotracheal Intubation in Children Older Than One Year

Abstract Background: We compared intubation conditions, intubation times, and hemodynamic response with the GlideScope video laryngoscope or the Macintosh direct laryngoscope in children older than one year. Methods: In total, 80 patients aged 1–12 years, scheduled to undergo elective surgery under general anesthesia with endotracheal intubation were included in a prospective, randomized trial.After standard anesthesia induction, patients were randomized into two groups.The group G patients(n = 40) were intubated with the GlideScope and the group M patients(n = 40) were intubated with the Macintosh laryngoscope.Intubation time, number of attempts,Cormack–Lehane score, airway maneuvers,visual analog score were recorded. Hemodynamic variables were recorded before and after anesthesia induction, at intubation, and one,three, and five minutes after intubation. Results: The demographic data and operation time were similar between the two groups. The intubation time was longer in Group G. The incidence of Cormack–Lehane score 1 was higher in Group G and that of Cormack–Lehane score 2 was higher in Group M. The hemodynamic parameters were similar between the two groups. Conclusion: We concluded that the GlideScope video laryngoscope provided better glottis visualization, but prolonged intubation time. No beneficial hemodynamic effect was found with the video laryngoscope. Keywords: Macintosh Laryngoscope, Orotracheal Intubation, Videolaringoscope, Pediatric Trial registration: ClinicalTrial.gov, NCT03326882, retrospectively registered, October 31, 2017