a non-inferiority study of the speed and success of nasotracheal intubation in maxillofacial surgeries using macintosh direct laryngoscope versus sanyar® video laryngoscope

Background: the recently developed blade design of the sanyar® video laryngoscope yields an exceptionally precise visualization of the larynx, thereby easing the process of tracheal intubation.objectives: a non-inferiority clinical investigation, to assess the efficacy of the sanyar® as compared to the macintosh® direct laryngoscope for nasotracheal intubation in the context of maxillofacial surgeries.methods: 78 patients for maxillofacial surgery were divided randomly into two groups and intubated through the nose using either the sanyar® or macintosh® laryngoscope after anesthesia was induced. the study measured intubation time and secondary objectives included success rate, attempts, and hemodynamic changes in two groups.results: 40 eligible patients in the sanyar® and 38 in the macintosh® group were involved. of all, 42(53.8%) were men and 36(46.2%) were women. the average age of patients in the sanyar® and mackintosh groups was (31.62±13.41) and (30.81±10.89), respectively. 39(98%) of the sanyar® group and 33(86%) of the macintosh® group had successful laryngoscopy and intubation, with a p-value<0.034. sanyar® group had a significantly shorter intubation time than macintosh® (p-value<0.001). hemodynamic changes before and after laryngoscopy and intubation had no significant differences between the two groups.conclusion: the sanyar® video laryngoscope reduced the time of nasal tracheal intubation in maxillofacial surgery compared to direct laryngoscopy and improved the success rate of the first intubation attempt.