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The nurse is preparing a teaching plan for a group of well-educated clients who were found to be HIV positive within the last year. The nurse should explain that the human immunodeficiency virus (HIV) acts in which way to suppress the immune system?

A.

Increase in B-lymphocytes and IgM.

B.

Destruction of helper T-cells and CD4 cells.

C.

Deficiency of cytotoxic T cells.

D.

Proliferation of suppressor T-cells.

Answer and Explanation

The Correct Answer is B

Choice A rationale

 

An increase in B-lymphocytes and IgM is not how HIV suppresses the immune system. B-lymphocytes are responsible for producing antibodies, and IgM is a type of antibody. HIV primarily affects T-lymphocytes, specifically helper T-cells (CD4 cells), rather than B-lymphocytes.

 

Choice B rationale

 

The destruction of helper T-cells and CD4 cells is the primary mechanism by which HIV suppresses the immune system. HIV targets and infects these cells, leading to their depletion. Helper T-cells play a crucial role in coordinating the immune response, and their loss results in a weakened immune system, making the body more susceptible to infections and diseases.

 

Choice C rationale

 

A deficiency of cytotoxic T cells is not the primary mechanism by which HIV suppresses the immune system. Cytotoxic T cells (CD8 cells) are involved in directly killing infected cells, but the main impact of HIV is on helper T-cells (CD4 cells), which are essential for orchestrating the immune response.

 

Choice D rationale

 

The proliferation of suppressor T-cells is not how HIV suppresses the immune system. Suppressor T-cells (regulatory T cells) help regulate and control the immune response, but HIV primarily affects helper T-cells (CD4 cells), leading to their destruction and a weakened immune system.


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View Related questions

Correct Answer is B

Explanation

Choice A rationale

Autoimmune response is not the correct type of immune reaction for a bee sting. Autoimmune responses involve the body’s immune system attacking its own tissues, which is not the case with bee stings.

Choice B rationale

IgE response hypersensitivity is the correct type of immune reaction for a bee sting. Bee stings can trigger an IgE-mediated hypersensitivity reaction, leading to symptoms such as rash, difficulty breathing, and low blood pressure. This type of reaction is also known as anaphylaxis.

Choice C rationale

Cell-mediated hypersensitivity is not the correct type of immune reaction for a bee sting. Cell-mediated hypersensitivity involves T cells and is typically associated with conditions like contact dermatitis, not bee stings.

Choice D rationale

Type II hypersensitivity is not the correct type of immune reaction for a bee sting. Type II hypersensitivity involves antibody-mediated destruction of cells, which is not the case with bee stings.

Correct Answer is D

Explanation

Choice A rationale

Total protein levels are not directly related to the symptoms of pallor and fatigue. While important, they do not provide immediate insight into the client’s current condition.

Choice B rationale

Sodium levels are crucial for overall health but are not directly related to the symptoms of pallor and fatigue. Monitoring sodium is important for fluid balance but not for diagnosing anemia.

Choice C rationale

Glucose levels are essential for managing diabetes and other metabolic conditions but are not directly related to the symptoms of pallor and fatigue. Monitoring glucose is important for overall health but not for diagnosing anemia.

Choice D rationale

Hemoglobin levels are directly related to the symptoms of pallor and fatigue. Diclofenac, an NSAID, can cause gastrointestinal bleeding, leading to anemia. Therefore, reviewing hemoglobin levels is crucial in this scenario.

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