• West J Emerg Med · Sep 2020

    Randomized Controlled Trial

    Effect of an Aerosol Box on Intubation in Simulated Emergency Department Airways: A Randomized Crossover Study.

    • Joseph S Turner, Lauren E Falvo, Rami A Ahmed, Timothy J Ellender, Dan Corson-Knowles, Anna M Bona, Elisa J Sarmiento, and Dylan D Cooper.
    • Indiana University School of Medicine, Department of Emergency Medicine, Indianapolis, Indiana.
    • West J Emerg Med. 2020 Sep 24; 21 (6): 78-82.

    IntroductionThe use of transparent plastic aerosol boxes as protective barriers during endotracheal intubation has been advocated during the severe acute respiratory syndrome coronavirus 2 pandemic. There is evidence of worldwide distribution of such devices, but some experts have warned of possible negative impacts of their use. The objective of this study was to measure the effect of an aerosol box on intubation performance across a variety of simulated difficult airway scenarios in the emergency department.MethodsThis was a randomized, crossover design study. Participants were randomized to intubate one of five airway scenarios with and without an aerosol box in place, with randomization of intubation sequence. The primary outcome was time to intubation. Secondary outcomes included number of intubation attempts, Cormack-Lehane view, percent of glottic opening, and resident physician perception of intubation difficulty.ResultsForty-eight residents performed 96 intubations. Time to intubation was significantly longer with box use than without (mean 17 seconds [range 6-68 seconds] vs mean 10 seconds [range 5-40 seconds], p <0.001). Participants perceived intubation as being significantly more difficult with the aerosol box. There were no significant differences in the number of attempts or quality of view obtained.ConclusionUse of an aerosol box during difficult endotracheal intubation increases the time to intubation and perceived difficulty across a range of simulated ED patients.

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