When using PPE, which item is most critical for preventing airborne transmission?

The most critical item for preventing airborne transmission when using personal protective equipment (PPE) is the surgical mask or N95 respirator. This is due to their ability to filter out small particles, including respiratory droplets and aerosols that may carry infectious agents. N95 respirators, in particular, are designed to provide a tighter fit around the face and filter out at least 95% of particles in the air, including those that are airborne due to procedures that generate droplets.

Airborne transmission is a significant concern in healthcare settings, especially with pathogens that can remain suspended in the air for extended periods. While gloves, face shields, and cover gowns play important roles in protecting healthcare providers from contact and droplet transmission, they do not offer the same level of protection against airborne pathogens as a surgical mask or N95 respirator. This makes the latter essential in situations where airborne transmission is a risk, allowing for adequate protection and reducing the likelihood of respiratory infections among healthcare workers and patients.