A nurse is talking with a client who has to come to the clinic for HIV testing. The nurse should explain that, after the laboratory has the enzyme- linked immunosorbent assay (ELISA) results, it will use which of the following tests to confirm the diagnosis?
CD4+ T-cell count
Western blot analysis
Quantitative RNA assay
Viral load test
The Correct Answer is B
This is because Western blot analysis detects specific antibodies to HIV antigens and has a high specificity and sensitivity for HIV infection. CD4+ T-cell count measures the number of helper T cells in the blood and indicates the degree of immunosuppression in clients with HIV infection, but it does not confirm the diagnosis. Quantitative RNA assay and viral load test measure the amount of HIV RNA in the blood and indicate the level of viral replication and response to antiretroviral therapy, but they do not confirm the diagnosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
This is because central cyanosis reflects a decrease in arterial oxygen saturation and is best seen in areas where blood vessels are close to the surface, such as the oral mucosa, tongue, and lips. Peripheral cyanosis, which may be caused by vasoconstriction or poor circulation, can be seen in the soles of the feet, ear lobes, and nail beds, but it does not necessarily indicate hypoxemia.

Correct Answer is B
Explanation
This is because sputum culture can identify the presence and type of mycobacteria that cause TB, while other tests can only indicate exposure or infection. Sputum culture results may take several weeks, so treatment should be initiated based on clinical suspicion and other tests.
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