A nurse is caring for a client who is coming to the clinic for human immunodeficiency virus (HIV) testing. The patient's enzyme-linked immunosorbent assay (ELISA) results are positive. Which test will be used to confirm the diagnosis of HIV?
Quantitative RNA assay
Western blot analysis
Viral load test
CD4+ T-cell count
The Correct Answer is B
A. A quantitative RNA assay is used to measure the amount of HIV RNA in the blood and is not used for confirmatory diagnosis after a positive ELISA.
B. The Western blot analysis is the standard confirmatory test for HIV following a positive ELISA result, as it specifically detects the presence of antibodies to HIV proteins.
C. A viral load test assesses the level of virus in the blood but does not confirm the diagnosis of HIV.
D. The CD4+ T-cell count is used to assess immune function in individuals with HIV but is not a confirmatory test for the diagnosis of the virus.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Over-hydration is not a trigger for a sickle cell crisis; in fact, adequate hydration helps prevent sickling of the cells.
B. Dehydration is a significant trigger for sickle cell crises, as it can lead to increased blood viscosity and sickling of red blood cells.
C. Non-steroidal anti-inflammatory drugs (NSAIDs) are often used to manage pain associated with sickle cell crises, but they do not trigger a crisis.
D. Vaccinations are important for preventing infections in individuals with sickle cell anemia but are not associated with triggering a sickle cell crisis.
Correct Answer is A
Explanation
A. Red blood cells (RBC) and hemoglobin (Hg) levels are directly affected by epoetin alfa, which stimulates red blood cell production in the bone marrow, making these values essential for assessing the medication's effectiveness.
B. The leukocyte count (WBC) is not relevant to the effects of epoetin alfa, as this medication primarily influences erythropoiesis rather than white blood cell production.
C. The erythrocyte sedimentation rate (ESR) is a non-specific test used to detect inflammation but does not provide information regarding the effectiveness of epoetin alfa.
D. The thrombocyte count does not assess the effectiveness of epoetin alfa, as this medication is specifically aimed at increasing red blood cell production.
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