TB Test Infection Control and Prevention 3

Question 1

After a TB patient is discharged from an AIIR, how long should the room remain unoccupied before routine terminal cleaning begins?

Accepted Answer

Sufficient time for adequate air changes to clear the room, calculated from the room's ACH rate

Answer

The room should remain empty long enough for the ventilation system to reduce airborne M. tuberculosis to safe levels; this time is calculated based on the room's ACH rate, not a fixed interval.

Question 2

Which of the following is NOT an appropriate engineering control for TB infection control in a healthcare setting?

Accepted Answer

Positive pressure rooms with HEPA-filtered supply air

Answer

Positive pressure rooms are designed to protect immunocompromised patients from environmental pathogens, not to contain infectious patients; TB patients require negative pressure rooms to prevent organism escape.

Question 3

A healthcare worker performs a user seal check on their N95 respirator before entering a TB isolation room and detects a leak. What is the appropriate action?

Accepted Answer

Discard the respirator and obtain a properly fitting one before entering the room

Answer

A failed user seal check means the respirator cannot adequately filter airborne particles; the worker must obtain a properly fitting N95 respirator before proceeding to ensure protection against TB transmission.

Question 4

During a contact investigation following a newly diagnosed infectious TB case, which group has the HIGHEST priority for TB testing and clinical evaluation?

Accepted Answer

Close contacts who shared enclosed air space with the index patient for prolonged periods

Answer

Close contacts who shared prolonged enclosed-air-space exposure with the infectious patient have the greatest probability of inhaling sufficient droplet nuclei to become infected and are evaluated first.

Question 5

What is the appropriate infection control approach for handling linen and laundry from a patient with active pulmonary TB?

Accepted Answer

Handle as standard hospital laundry using standard precautions, since TB is airborne not contact-transmitted

Answer

Because TB is transmitted via airborne droplet nuclei rather than through contact with surfaces or fomites, linen from TB patients can be processed as standard hospital laundry using standard precautions.

(TB Test) Tuberculosis Test Certification Practice Test

(TB Test) Tuberculosis Test Certification Practice Test

TB Test Infection Control and Prevention 3