Effect of using barrier devices on intubation times and performance—a randomized, prospective, crossover manikin study

Abstract

Background: The impact of barrier devices on endotracheal intubation times is unknown. Objective: We sought to compare the effects using conventional personal protective equipment, an aerosol box, and a transparent plastic drape on intubation times by experienced emergency physicians on a manikin in both the sniffing and ramped positions in a randomized, prospective cross-over study design. Methods: A total of 13 experienced emergency physicians performed endotracheal intubations on a manikin in both the sniffing and ramped positions using conventional personal protective equipment (PPE), an aerosol box, and a transparent plastic drape. The primary outcome was intubation time; secondary outcomes included first-pass success rates and ratings of difficulty in accessing the device, inserting the endotracheal tube into the glottis, maneuvering the laryngoscope, and clear vision of the manikin’s face. Results: The use of an aerosol box or transparent plastic drape increased intubation times in both the sniffing and ramped positions. First-pass success rates did not differ between the groups. Perceptions of difficulty accessing the device, inserting the endotracheal tube into the glottis, maneuvering the laryngoscope, and obtaining a clear view of the manikin’s face to the model were higher when using the aerosol box and transparent plastic drape compared to intubation with only PPE. Conclusion: An aerosol box and transparent plastic drape may increase intubation times during endotracheal intubation of coronavirus disease 2019 (COVID-19) patients in both the sniffing and ramped positions. Further research should investigate the utility of these devices during endotracheal intubation. Trial registration number and date: NCT04412226; 31 May 2020.