The nurse is caring for a client with a suspected pulmonary embolism. Which diagnostic test should the nurse anticipate?

Choice A reason: HIV does not primarily cause a deficiency in antibody production. B-cells produce antibodies, but HIV targets CD4 T-cells, impairing their ability to activate B-cells. This indirectly reduces antibody effectiveness, but the primary mechanism is T-cell destruction, not a direct antibody production deficit, making this incorrect.

Choice B reason: HIV infects and destroys helper T-cells (CD4 cells), critical for coordinating immune responses. By reducing CD4 cell counts, HIV impairs activation of B-cells and cytotoxic T-cells, leading to immune suppression. This is the primary mechanism of AIDS-related immune deficiency, making it the correct explanation for HIV pathology.

Choice C reason: Proliferation of suppressor T-cells (regulatory T-cells) is not a primary HIV mechanism. HIV depletes CD4 cells, not suppressor T-cells, which modulate immune responses. While immune dysregulation occurs, the hallmark is CD4 destruction, not suppressor T-cell proliferation, making this an inaccurate description of HIV’s action.

Choice D reason: HIV does not increase B-lymphocyte numbers. It impairs B-cell function indirectly by destroying CD4 cells, which are needed to activate B-cells for antibody production. B-cell hyperactivity may occur in early HIV, but the primary immune suppression results from CD4 cell loss, not B-cell proliferation.

Choice A reason: Rinsing the mouth after using a corticosteroid inhaler prevents oral candidiasis, a common side effect from residual steroid deposition. This ensures safe asthma management, as fungal infections compromise adherence and health, making it the priority teaching point for proper inhaler use.

Choice B reason: Using the inhaler only during asthma attacks applies to rescue inhalers, not maintenance corticosteroids, which are used daily. This is incorrect, as rinsing the mouth is essential for corticosteroid inhalers to prevent oral thrush, ensuring safe and effective asthma control.

Choice C reason: Storing inhalers in a refrigerator is unnecessary and may degrade some medications. Room-temperature storage is standard. Rinsing the mouth after corticosteroid inhaler use is critical to prevent oral candidiasis, making it the priority teaching point for asthma management.

Choice D reason: Shaking the inhaler only once may be insufficient for proper aerosolization in some devices. Rinsing the mouth after corticosteroid inhaler use is the priority, as it prevents oral thrush, a significant side effect, ensuring safe and consistent asthma therapy.