A nurse is caring for a client with active TB disease. Which precaution should the nurse take to prevent the transmission of TB to others?
Isolation in a negative-pressure room
Frequent handwashing with soap and water
Wearing a surgical mask at all times
Avoiding close contact with the client
The Correct Answer is A
A) Correct. Isolation in a negative-pressure room is the standard precaution for preventing the transmission of TB in healthcare settings, as it helps contain airborne pathogens.
B) Incorrect. While handwashing is important for general infection control, it is not the primary measure for preventing TB transmission.
C) Incorrect. Wearing a surgical mask at all times is not sufficient to prevent TB transmission, especially in a healthcare setting.
D) Incorrect. Avoiding close contact with the client is not a practical measure for healthcare professionals providing care to TB patients. Proper isolation measures are more effective.
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Related Questions
Correct Answer is C
Explanation
A) Incorrect. LTBI does not always progress to active TB disease. Many individuals with LTBI do not develop active disease, especially if they have a strong immune system.
B) Incorrect. While the risk of progression is highest in the first two years after LTBI, it can occur at any time, and some individuals may progress years or even decades later.
C) Correct. LTBI rarely progresses to active TB, especially in individuals with a strong immune system. Most people with LTBI do not develop active disease.
D) Incorrect. LTBI carries a risk of progressing to active TB disease, although the risk is relatively low in many individuals.
Correct Answer is B
Explanation
A) Incorrect. A complete blood count (CBC) may reveal abnormalities associated with TB, but it does not directly confirm the presence of Mycobacterium tuberculosis in sputum samples.
B) Correct. Polymerase chain reaction (PCR) is a molecular test that can detect the genetic material of Mycobacterium tuberculosis in sputum samples, providing a confirmatory diagnosis.
C) Incorrect. The tuberculin skin test (TST) is a screening test for TB infection, not a test for confirming active disease in sputum samples.
D) Incorrect. Gram stain is a laboratory technique used to visualize the characteristics of bacterial cells but is not specific for Mycobacterium tuberculosis.
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