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?
Increase in B-lymphocytes and IgM.
Destruction of helper T-cells and CD4 cells.
Deficiency of cytotoxic T cells.
Proliferation of suppressor T-cells.
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
Serum blood glucose level is not directly related to the presence of purulent drainage at a wound site. While blood glucose levels can affect wound healing, they do not provide specific information about the presence of infection.
Choice B rationale
Culture for sensitive organisms is the most appropriate laboratory value to note when purulent drainage is observed. This test helps identify the specific bacteria causing the infection and determines the most effective antibiotics for treatment.
Choice C rationale
C-reactive protein (CRP) level is a marker of inflammation and can indicate the presence of an infection, but it does not provide specific information about the bacteria causing the infection.
Choice D rationale
Blood pH level is not directly related to the presence of purulent drainage at a wound site. While blood pH can be affected by severe infections, it is not a specific indicator of wound infection.
Correct Answer is D
Explanation
Choice A rationale
Determining the neurological baseline prior to the fall is important but not the immediate priority. The client’s current confusion and projectile vomiting suggest a potential acute condition that needs immediate assessment.
Choice B rationale
Determining the client’s last dose of corticosteroids is relevant for managing multiple sclerosis but does not address the immediate concern of confusion and vomiting.
Choice C rationale
Administering a PRN IV antiemetic as prescribed can help manage vomiting but does not address the underlying cause of the symptoms.
Choice D rationale
Completing a head-to-toe neurological assessment is the priority intervention. The client’s confusion and projectile vomiting could indicate increased intracranial pressure or another acute neurological condition that requires immediate attention.