A simulation method for testing aerosol mitigation strategies: an observational study


This article was originally published here

Simul Healthc. November 29, 2021. doi: 10.1097 / SIH.000000000000000625. Online ahead of print.


BACKGROUND: Frontline healthcare workers who perform potentially aerosol-generating procedures, such as endotracheal intubations, in patients with 2019 coronavirus disease may be at increased risk of exposure to coronavirus 2 from severe acute respiratory syndrome. Continuing to care for patients with 2019 coronavirus disease, minimizing exposure is essential. Using simulation, we designed a test method to assess devices that can mitigate the spread of aerosols and droplet-sized particles.

METHODS: In this prospective single-center study, participants intubated a manikin 3 times using standard personal protective equipment, once without a barrier device, once with an acrylic box, and once with a horizontal field. amended. The number of micrometric size particles, generated by a nebulization model, was recorded before and after each intubation. The rate of first pass intubation and time to intubation were recorded. Each operator completed a post-simulation survey on their experience using the barrier devices.

RESULTS: Thirty airway proceduralists completed the simulation and investigation. There was no significant difference in the number of particles (aerosols or droplets) or first pass intubation, but the horizontal field was found to significantly increase the intubation time (P = 0.01). Most participants preferred the sheet to the acrylic box or no barrier device.

CONCLUSIONS: The acrylic box and plastic sheet did not dampen the spread of particles. However, our test method can be used to test barrier designs using negative pressure or other particle propagation mitigation strategies.

PMID:34934027 | DO I:10.1097 / SIH.000000000000625


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