Evaluation of face shields used during aerosol generating procedures.

Evaluation of face shields used during aerosol generating procedures.

Publication date: Sep 20, 2023

Transnasal flexible laryngoscopy is considered an aerosol generating procedure. A negative pressure face shield (NPFS) was developed to control aerosol from the patient during laryngoscopy. The purpose of this study was to determine the effectiveness of the NPFS at controlling virus aerosol compared to a standard disposable plastic face shield. The face shields were placed on a simulated patient coughing machine. MS2 bacteriophage was used as a surrogate for SARS-CoV-2 and was aerosolized using the coughing machine. The aerosolized virus was sampled on the inside and outside of the face shields. The virus aerosol concentration was not significantly different between the inside and outside of the traditional plastic face shield (pā€‰=ā€‰0. 12). However, the particle concentrations across all particle sizes measured were significantly decreased outside the face shield. The virus and particle concentrations were significantly decreased (pā€‰

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Concepts Keywords
Bacteriophage Aerosol
Coughing Aerosolized
Effectiveness Concentrations
Laryngoscopy Coughing
Ms2 Face
Generating
Laryngoscopy
Machine
Npfs
Particle
Patient
Plastic
Shield
Shields
Virus

Semantics

Type Source Name
disease VO effectiveness
drug DRUGBANK Coenzyme M
disease VO Viruses
disease VO frequency
disease VO LACK
disease MESH COVID 19 pandemic
disease VO nose
disease VO effective
disease VO device
drug DRUGBANK Medical air
disease VO USA
disease VO ineffective
disease VO mouth
disease VO viable
disease VO population
drug DRUGBANK Phosphate ion
drug DRUGBANK Ethanol
disease IDO assay
disease VO viability
disease VO volume
drug DRUGBANK Ranitidine
disease MESH infection
disease VO Severe acute respiratory syndrome coronavirus 2
drug DRUGBANK Riboprine
disease MESH respiratory infections
drug DRUGBANK Serine
disease MESH Influenza
disease MESH Respiratory Diseases
drug DRUGBANK Phenylbutyric acid
pathway REACTOME Reproduction

Original Article

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