Comparison of the King Vision Channelled Video Laryngoscope and Conventional Laryngoscopy for Endotracheal Intubation...

To compare the time to successful endotracheal intubation using the channelled King Vision video laryngoscope (KVVL) versus the Macintosh laryngoscope in intubations performed by novice anaesthesia providers.

A randomised controlled study. Place and Duration of the Study: Department of Anaesthesiology and Reanimation, University of Health Sciences, Izmir Bozyaka Training and Research Hospital, Izmir, Turkiye, from January to July 2023.

A total of 70 patients were randomised into two groups: Group M (Macintosh laryngoscope) and Group K (channelled KVVL blade). The primary outcome was the time of successful endotracheal intubation. Statistical analysis included an independent samples t-test or Mann-Whitney U test for continuous variables based on normality, a chi-square or Fisher's Exact test for categorical variables, and Spearman's rank correlation for associational analysis.

There were no statistically significant differences between the groups regarding baseline demographic and airway characteristics. The primary outcome-time to successful intubation-was significantly longer in Group K compared to Group M. The backward, upward, and rightward pressure manoeuvre was required significantly more frequently in Group M than in Group K.

While the KVVL may offer notable advantages in anatomically difficult airways, its effectiveness appears limited in routine airway management by inexperienced users. Therefore, device selection in clinical settings should consider both the operator's level of experience and anticipated specific airway challenges.

King vision channel videolaryngoscope, Conventional laryngoscopy, Intubation time, Endotracheal intubation, Novice user.