1. Discard soiled isolation gown after leaving the client’s room 🥼
📌In airborne precaution cases like TB, gowns protect clothing and skin from droplets, secretions, or contaminated surfaces.
📌Even though TB is not spread by skin contact, the gown can become contaminated with respiratory droplets containing Mycobacterium tuberculosis when caring for a coughing client.
📌Why after leaving? PPE should be removed and discarded inside the doorway or anteroom before entering common areas, to prevent transferring contaminants.
📌Disposal process: Remove gloves first (if used), then gown, turning it inside out to avoid touching the contaminated surface. Place it in a designated biohazard container.
📌This step ensures that the pathogen is not transported on your uniform into other patient care areas.
2. Assign the client to a negative-pressure airflow room 🛏️
📌TB is transmitted via airborne droplet nuclei, which are extremely small (1–5 microns) and can stay suspended in the air for hours.
📌Negative pressure rooms ensure that air flows into the room but not out, using specialized ventilation systems that exhaust air outdoors or filter it through a HEPA filter before recirculation.
📌This is critical to prevent airborne TB particles from contaminating hallways or shared spaces in the facility.
📌Guidelines recommend at least 12 air changes per hour (ACH) in newly constructed rooms and ≥6 ACH in existing facilities.
📌This environmental control is the first line of defense for preventing nosocomial transmission in healthcare settings.
3. Wear an N95 mask when caring for the client 😷
📌An N95 respirator is specifically designed to filter out at least 95% of airborne particles, including TB droplet nuclei.
📌Fit-testing is required annually to ensure a proper seal—without a seal, airborne particles can bypass the filter.
📌The respirator must be worn before entering the room and kept on for the entire time inside, even if the client is wearing a surgical mask.
📌This is because TB can remain airborne even after the patient stops coughing, and particles can circulate in the room air.
📌An N95 mask provides much higher filtration than a surgical mask and is the standard for airborne precautions per CDC guidelines.
4. Perform hand hygiene before leaving the client’s room 🧼
📌Even though TB is airborne and not spread via casual touch, hand hygiene is crucial for preventing the spread of other pathogens the patient might also carry.
📌Hands may come into contact with contaminated surfaces, respiratory secretions, or PPE during care.
📌When to perform: Immediately after removing gloves and gown, and before touching any other surfaces, equipment, or people.
📌Alcohol-based hand rubs are generally preferred unless hands are visibly soiled, in which case soap and water are required.
📌This is a universal precaution and is considered one of the most effective measures for breaking the chain of infection.