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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Correct Answer is D
Explanation
Choice A rationale
Observing pupil response of the right eye is not relevant to the care of the left eye post-cataract extraction.
Choice B rationale
Sleeping flat in a supine position is not recommended as it can increase intraocular pressure. Elevating the head is advised.
Choice C rationale
Turning, coughing, and deep breathing every 2 hours is not specific to cataract surgery and can increase intraocular pressure.
Choice D rationale
Administering a stool softener is important to prevent straining during bowel movements, which can increase intraocular pressure and affect healing.
Correct Answer is ["B","C","D","E"]
Explanation
Choice A rationale:
A computerized tomography (CT) scan of the chest is not typically required for routine pneumonia cases unless there are complications or the pneumonia is not responding to standard treatment. CT scans provide more detailed images but are usually reserved for more complex cases.
Choice B rationale:
Albuterol treatments by nebulizer every 4 to 6 hours are appropriate for managing wheezing and bronchospasm associated with pneumonia, especially in a patient with a history of COPD. Albuterol helps open the airways, making it easier for the patient to breathe.
Choice C rationale:
A chest x-ray is a standard diagnostic tool for pneumonia. It helps assess the extent of lung involvement and monitor the progression or resolution of the infection. Repeating the chest x-ray can help evaluate the effectiveness of the treatment.
Choice D rationale:
Increasing oral fluids is essential for patients with pneumonia to help thin mucus, making it easier to expectorate. Adequate hydration also supports overall health and recovery.
Choice E rationale:
Obtaining an arterial blood gas (ABG) is important for assessing the patient’s oxygenation and acid-base status. This information is crucial for managing respiratory distress and ensuring adequate oxygen delivery.