A client with acquired immune deficiency syndrome (AIDS) and Pneumocystis jiroveci pneumonia has a CD4+ T cell count of 200 cells/mm³ (20%). The client asks the nurse why they have these recurring massive infections. Which pathophysiologic mechanism should the nurse describe in response to this client's question?

Reference Range:
T-helper CD4 cells [600 to 1500 cells/mm³ (60 to 75%)]

Choice A reason: This is incorrect because teaching the client to wear a mask, hand wash, and social distance is not the most important action for the nurse to take. These are preventive measures that should be followed by everyone, regardless of their COVID-19 status.

Choice B reason: This is correct because isolating the client from other clients, family, and healthcare workers not wearing proper PPE is the most important action for the nurse to take. This is to prevent transmission of COVID-19 to others who may be at risk of severe complications or death.

Choice C reason: This is incorrect because reporting the COVID-19 result to the local health department according to CDC guidelines is not the most important action for the nurse to take. This is a legal and ethical obligation that should be done after confirming the diagnosis, but it does not have an immediate impact on the client's health or safety.

Choice D reason: This is incorrect because explaining to the client to inform others that they may have been potentially exposed in the last 14 days is not the most important action for the nurse to take. This is a moral and social responsibility that should be done as soon as possible, but it does not address the urgent need of isolating the client from potential sources of infection.

Choice A reason: This is incorrect because consuming a high protein diet is not a recommended strategy to reduce risk factors for BPH. In fact, some studies have suggested that a high protein intake may increase the risk of BPH by stimulating the production of insulin-like growth factor-1 (IGF-1), which may promote prostate growth.

Choice B reason: This is incorrect because obtaining a prostate-specific antigen blood level test is not a preventive measure for BPH, but rather a diagnostic tool to detect prostate cancer or monitor its treatment. Prostate-specific antigen (PSA) is a protein produced by the prostate gland that can be elevated in both BPH and prostate cancer. However, PSA levels alone cannot distinguish between these two conditions and need to be interpreted along with other factors, such as age, race, family history, and digital rectal examination.

Choice C reason: This is incorrect because taking vitamin supplements is not a proven method to reduce risk factors for BPH. While some vitamins, such as vitamin D and vitamin E, may have some beneficial effects on prostate health, there is not enough evidence to support their use as preventive agents for BPH. Moreover, some vitamins, such as vitamin A and vitamin B6, may have adverse effects on prostate health and increase the risk of BPH or prostate cancer.

Choice D reason: This is correct because increasing physical activity is a helpful way to reduce risk factors for BPH. Physical activity can help maintain a healthy weight, lower blood pressure, improve blood circulation, reduce inflammation, and regulate hormone levels. All of these factors can contribute to preventing or delaying the development of BPH.