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Assessment of the proficiency and usability of direct laryngoscopy and video laryngoscopy

직접 후두경과 비디오 후두경의 숙련도 및 유용성 평가

Shin, Gyo-Seok;Tak, Yang-Ju
신교석;탁양주

  • Received : 2019.03.13
  • Accepted : 2019.04.14
  • Published : 2019.04.30

Abstract

Purpose: The aim of this study was conducted to assess the proficiency of both direct laryngoscopy and video laryngoscopy and the usefulness of each laryngoscope, thereby provide basic data for further education using video laryngoscopy. Methods: Forty one paramedic subjects participated in this study. Usability was measured with the System usability scale. The Macintosh direct laryngoscope and $C-MAC^{(R)}$ video laryngoscope were two instruments evaluated in the study. Results: Training with video laryngoscopy showed significantly better results within the categories of dental injury (p=.004), esophageal intubation (p=.001), and proper depth placement of intubation tubes (p=.019). The results of the System usability scale questionnaire and the degrees of visibility based on the Cormack & Lehane classification were also found to be better achieved with the video laryngoscopy (p=.000). Conclusion: This study suggests enhancing education with video laryngoscopy, which could reduce the risk of complications and duration of intubation while increasing the success rate among students and emergency medical technicians with little experience, rather than the existing method of only using direct laryngoscope, which requires considerable experience and skills.

Keywords

Endotracheal intubation;Direct laryngoscope;Video laryngoscope;System usability scale

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