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

No waiting period is needed; cleaning can start immediately after patient leaves

Answer

A mandatory 24-hour waiting period regardless of ventilation rate

Answer

At least 72 hours to allow all airborne particles to settle

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

Negative pressure airborne infection isolation rooms

Answer

HEPA filtration recirculation units

Answer

Upper-room ultraviolet germicidal irradiation

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

Proceed into the room since a perfect seal is rarely achievable in practice

Answer

Use a surgical mask instead as a reasonable substitute for TB patient care

Answer

Layer two surgical masks over the failed N95 to compensate for the poor seal

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

Casual contacts with brief, single encounters in large open spaces

Answer

Distant contacts with sporadic exposure in well-ventilated public areas

Answer

Community contacts who live in the same zip code as the index case

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

Double-bag and label as biohazardous waste for incineration

Answer

Soak linen in a 1:10 bleach solution for 30 minutes before standard laundering

Answer

Quarantine linen for 48 hours before laundering to allow organisms to die

Question 6

What is the primary goal of a comprehensive TB infection control program in a healthcare facility?

Accepted Answer

To promptly identify, isolate, and treat TB cases while preventing transmission to staff, patients, and visitors

Answer

To permanently eliminate Mycobacterium tuberculosis from the facility environment

Answer

To provide BCG vaccination to all healthcare workers and high-risk patients

Answer

To conduct mandatory TB screening for all community members served by the facility

Question 7

A healthcare worker who regularly cares for TB patients develops a persistent cough, night sweats, and unexplained weight loss. What is the most appropriate immediate action?

Accepted Answer

Report symptoms to occupational health, be removed from patient care duties, and undergo TB evaluation

Answer

Continue working while taking over-the-counter cough suppressants

Answer

Self-administer a TB skin test and return to work if negative

Answer

Wear an N95 respirator while working until symptoms resolve on their own