What is the purpose of isolation precautions (contact, droplet, airborne)?

• A. To improve bed turnover
• B. To prevent transmission of infections based on route: contact, droplet, airborne
• C. To reduce PPE usage at all times
• D. To isolate patients randomly

Answer: (B)

The purpose of isolation precautions is to prevent the spread of infections by stopping the specific routes that pathogens use to move between people. When an infection can spread by contact, droplets, or airborne particles, precautions are chosen to block that route.

For contact transmission, gloves and a gown are used and contaminated surfaces and equipment are managed carefully to prevent transfer. For droplet transmission, a mask is worn by staff (with eye protection if needed) when close to the patient, and the patient is kept in a private room to reduce exposure. For airborne transmission, a negative pressure room and a fit-tested respirator are used to prevent inhalation of small infectious particles. Good hand hygiene and careful patient transport further reduce risk. In short, isolation precautions are about stopping transmission by addressing how the infection spreads.