TB Test Infection Control and Prevention 2

Question 1

What does HEPA stand for in the context of air filtration systems used for TB infection control?

Accepted Answer

High-Efficiency Particulate Air

Answer

HEPA stands for High-Efficiency Particulate Air; HEPA filters remove at least 99.97% of airborne particles ≥0.3 microns, effectively capturing M. tuberculosis droplet nuclei.

Question 2

Where should upper-room ultraviolet germicidal irradiation (UVGI) fixtures be positioned to be most effective in reducing airborne M. tuberculosis?

Accepted Answer

In the upper zone of the room where air convects before recirculating downward

Answer

Upper-room UVGI fixtures are placed in the upper zone so that naturally convecting room air passes through the UV field, killing M. tuberculosis before the air recirculates to the occupied lower zone.

Question 3

According to the CDC/NIOSH hierarchy of controls for TB, which level must be implemented FIRST before other controls can be effective?

Accepted Answer

Administrative controls (infection control policies and procedures)

Answer

Administrative controls establish the policies, protocols, and training that govern how engineering controls and PPE are used; without them, lower-level controls cannot be implemented effectively.

Question 4

What does the term 'source control' refer to in the context of TB infection control?

Accepted Answer

Having the infectious patient wear a surgical mask to reduce release of droplet nuclei

Answer

Source control refers to measures applied directly to the infectious person—such as placing a surgical mask on the patient—to reduce the release of M. tuberculosis droplet nuclei at the point of origin.

Question 5

A patient with suspected pulmonary TB presents to an emergency department that has no airborne infection isolation room available. Which immediate measure is MOST appropriate?

Accepted Answer

Place a surgical mask on the patient and separate them from others in a designated area

Answer

Placing a surgical mask on the patient (source control) and separating them from others limits droplet nuclei release and exposure until a proper AIIR becomes available.

(TB Test) Tuberculosis Test Certification Practice Test

(TB Test) Tuberculosis Test Certification Practice Test

TB Test Infection Control and Prevention 2