Annals of emergency medicine
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To evaluate aerosol dispersion and exposure risk during oxygenation therapy among health care personnel. ⋯ Strong flow from the oxygenation devices resulted in increased aerosol concentrations. CPAP at the feet side, BiPAP at the head side, HFNC, and NCO with face coverings significantly increase aerosol exposure and should be used with caution. Aerosol concentrations at all positions were lower with NRM and VAPOX.