Preliminary Findings on Control of Dispersion of Aerosols and Droplets During High-Velocity Nasal Insufflation Therapy Using a Simple Surgical Mask

COVID-19 pneumonia presents with severe hypoxemic respiratory failure, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The primary mode of transmission appears to be droplet-borne. Respiratory support and high levels of oxygen are required in the acute treatment of these patients. High-flow therapies have been included as part of the possible management of COVID-19. 1,2  One such modality is high-flow therapy, including high-velocity nasal insufflation (HVNI), high-flow nasal oxygen (HFNO), and high-flow nasal cannulation (HFNC).