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

High-Efficiency Pathogen Arrest

Answer

Healthcare Environmental Protection Apparatus

Answer

Hazardous Exposure Prevention Airflow

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

At floor level to disinfect settling particles

Answer

Inside supply air ducts to sterilize incoming air

Answer

Directly above patient beds to disinfect the breathing 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

Personal protective equipment (N95 respirators)

Answer

Engineering controls (negative pressure rooms, HEPA filtration)

Answer

Environmental controls (UV lights, surface disinfection)

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

Using HEPA filtration to remove TB bacteria from recirculated air

Answer

Applying negative pressure to prevent infectious air from leaving the isolation room

Answer

Administering antibiotics to reduce the patient's bacterial burden and infectiousness

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

Place the patient in a standard room with the door closed and open the window

Answer

Move the patient to a hallway away from other patients

Answer

Immediately administer TB medications to reduce infectiousness

Question 6

How often must healthcare workers who use N95 respirators for TB patient care undergo respirator fit testing, per OSHA requirements?

Accepted Answer

Annually, and whenever respirator model or facial features change

Answer

At initial hire only unless facial features change significantly

Answer

Every 6 months

Answer

Every 2 years

Question 7

Which statement correctly distinguishes a surgical mask from an N95 respirator in TB infection control?

Accepted Answer

Surgical masks are used for patient source control; N95 respirators protect healthcare workers from inhalation

Answer

Both provide equivalent protection against inhaling TB droplet nuclei

Answer

Surgical masks filter droplet nuclei for the wearer; N95s only protect from splashes

Answer

N95 respirators should be worn by both patient and healthcare worker in all TB situations