What is the primary purpose of airborne precautions in infection control?

The primary purpose of airborne precautions in infection control is to control infections transmitted by airborne droplet nuclei. These precautions are specifically designed to prevent the spread of pathogens that can be inhaled into the respiratory system through tiny airborne particles, typically less than 5 microns in diameter. These droplets can remain suspended in the air for extended periods and can be inhaled by individuals who are not even in close proximity to the infected person.

Airborne precautions include measures such as placing patients in airborne infection isolation rooms, ensuring proper ventilation, and requiring healthcare workers and visitors to wear specialized masks, such as N95 respirators, to reduce the risk of inhaling infectious particles. This approach is critical for controlling diseases such as tuberculosis, measles, and chickenpox, which are known to be transmitted through the airborne route.

The other options do not accurately reflect the specific focus of airborne precautions. While isolating patients with bacterial infections, protecting workers from bloodborne pathogens, and managing chronic respiratory diseases are important aspects of overall infection control, they do not pertain to the unique mode of transmission addressed by airborne precautions.