Muscle activity during endotracheal intubation using 4 laryngoscopes (Macintosh laryngoscope, Intubrite, TruView Evo2 and King Vision) – A comparative study

摘要

Background: Successful endotracheal intubation requires mental activity and no less important physical activity from the anesthesiologist,so ergonomics of used devices is important. The aim of our study has been to compare 4 laryngoscopes regardingan operator’s activity of selected muscles of the upper limb, an operator’s satisfaction with used devices and an operator’s fatigueduring intubation attempts. Material and Methods: The study included 13 anesthesiologists of similar seniority. To measuremuscle activity MyoPlus 2 with 2-channel surface ElectroMyoGraphy (sEMG) test device was used. Participant’s satisfactionwith studied devices was evaluated using Visual Analog Scale. An operator’s fatigue during intubation efforts was evaluatedby means of the modified Borg’s scale. Results: The highest activity of all the studied muscles was observed for the Intubritelaryngoscope, followed by the Mackintosh, TruView Evo2 and the lowest one – for the King Vision video laryngoscope. A significantstatistical difference was observed for the King Vision and the rest of laryngoscopes (p 0.05). No significant statisticaldifferences were observed between the Macintosh, TruView Evo2 and Intubrite laryngoscopes (p 0.05). The shortest time ofintubation was achieved using the standard Macintosh blade laryngoscope. The highest satisfaction was noted for the King Visionvideo laryngoscope, and the lowest for – the TruView Evo2. The Intubrite was the most demanding in terms of workload, inthe opinion of the participants’, and the least demanding was the King Vision video laryngoscope. Conclusions: Muscle activity,namely the force used for intubation, is the smallest when the King Vision video laryngoscope is used with the highest satisfactionand lowest workload, and the highest muscle activity was proven for the Intubrite laryngoscope with the highest workload. Med Pr 2016;67(2):155–162