A nurse is caring for a client with suspected tuberculosis (TB) who has provided sputum samples for testing. Which laboratory test is used to confirm the presence of Mycobacterium tuberculosis in sputum samples?

Complete blood count (CBC)

Polymerase chain reaction (PCR)

Tuberculin skin test (TST)

Gram stain

Answer and Explanation

The Correct Answer is B

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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Correct Answer is B

Explanation

A) Incorrect. Skipping doses, even when feeling better, can lead to drug resistance and treatment failure.

B) Correct. Taking all medications as prescribed is essential to prevent the development of drug-resistant TB.

C) Incorrect. TB treatment should be completed in its entirety, even if symptoms improve before the regimen is finished.

D) Incorrect. TB medications should be taken as prescribed, not solely based on symptom severity.

A. "A CT scan can confirm the presence of TB bacteria in the lungs." B. "A CT scan is used to screen for TB infection in the bloodstream." C. "A CT scan provides detailed images of the chest to assess lung involvement and detect complications." D. "A CT scan is not typically used in TB diagnosis."

Correct Answer is C

Explanation

A) Incorrect. A CT scan does not directly confirm the presence of TB bacteria but provides detailed images of the chest.

B) Incorrect. A CT scan is not used as a primary screening tool for TB infection in the bloodstream.

C) Correct. Chest CT scans are valuable for assessing the extent of lung involvement, detecting complications such as cavities or pleural effusions, and guiding treatment decisions in TB cases.

D) Incorrect. CT scans are commonly used in the evaluation and management of TB, especially for assessing lung abnormalities.

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A nurse is caring for a client with suspected tuberculosis (TB) who has provided sputum samples for testing. Which laboratory test is used to confirm the presence of Mycobacterium tuberculosis in sputum samples?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is providing education to a client with tuberculosis (TB) about the importance of adhering to the prescribed medication regimen. Which statement by the client indicates a correct understanding of medication adherence?

Correct Answer is B

Explanation

A client is undergoing diagnostic testing for tuberculosis (TB) and asks the nurse about the purpose of a chest computed tomography (CT) scan. What is the nurse's best response?

Correct Answer is C

Explanation

A nurse is providing education to a client who has been diagnosed with active tuberculosis (TB). Which of the following instructions should the nurse emphasize to the client regarding medication adherence?

A nurse is explaining the process of collecting sputum samples for tuberculosis (TB) testing to a client. Which instruction should the nurse provide to ensure an accurate sample?

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A nurse is educating a client about the diagnostic evaluation for tuberculosis (TB). Which test is commonly used to screen for TB infection and is administered by injecting a small amount of purified protein derivative (PPD) under the skin?

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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?

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