When is a negative pressure isolation unit indicated for air transport?

When is a negative pressure isolation unit indicated for air transport?

• A. For highly contagious airborne infections or risk of aerosolization when standard isolation cannot be maintained
• B. Only for patients with non-contagious conditions
• C. For general transport of any patient
• D. Never necessary

Answer: (A)

The main idea is infection control during air transport: containing airborne contaminants so they don’t spread to crew or other patients. A negative pressure isolation unit is used when there is a high risk of airborne spread or aerosolization and you cannot rely on standard aircraft isolation alone. The unit creates a pressure gradient that pulls air into the enclosure rather than letting it escape, often with filtration to prevent pathogens from leaving. This protects everyone outside the unit from exposure, which is why it’s indicated for highly contagious airborne infections or when aerosol generation is possible and standard isolation isn’t sufficient. It isn’t needed for non-contagious conditions, nor is it used for routine transport of any patient.