Correct Answer: A

Rationale: The correct instruction the nurse should include is to advise the client to avoid crowded places. Immunocompromised clients undergoing chemotherapy are at a higher risk of infections, so avoiding crowded places can help reduce exposure to pathogens. Wearing a mask at home is not necessary unless someone in the household is sick. Drinking unfiltered water can introduce harmful bacteria, increasing the risk of infection. Avoiding washing hands frequently is incorrect as hand hygiene is crucial in preventing the spread of infections.

Correct Answer: B

Rationale: The correct answer is B: Provide humidified oxygen. Providing humidified oxygen helps prevent dryness and irritation of the respiratory tract during oxygen therapy. This intervention is crucial in preventing complications such as mucous membrane dryness and potential damage to the airways. Checking the client's oxygen saturation every 2 hours (choice A) is essential for monitoring the client's response to therapy but does not directly prevent complications. Instructing the client to perform deep breathing exercises (choice C) is beneficial for respiratory function but does not directly address preventing complications related to oxygen therapy. Using an oxygen mask for delivery (choice D) is a common method of administering oxygen but does not specifically focus on preventing complications like dryness and irritation.

Correct Answer: C

Rationale: The correct action for the nurse to take is to pour warm water over the client's perineum. This intervention helps stimulate urination after catheter removal by providing warmth and promoting relaxation of the muscles. Assessing for bladder distention after 2 hours (Choice A) is not the initial intervention to facilitate voiding. Encouraging the client to try urinating in a sitting position (Choice B) may be uncomfortable if the client is struggling to void. Restricting the client's fluid intake (Choice D) is not appropriate as it can further exacerbate the issue by concentrating the urine.

Correct Answer: B

Rationale: The correct action the nurse should take first when noting excessive lochia discharge in a client who delivered a full-term newborn 16 hours ago is to perform a fundal massage. Fundal massage helps stimulate uterine contractions, which in turn reduces bleeding in postpartum clients. Administering pain medication (Choice A) is not the priority in this situation as addressing the excessive lochia discharge is crucial to prevent complications. Checking the baby's heart rate (Choice C) is important but not the first action to manage the mother's condition. Applying an ice pack (Choice D) is not appropriate for managing excessive lochia discharge; fundal massage is the initial intervention to address this issue effectively.

Correct Answer: A

Rationale: The correct instruction the nurse should include is to advise the client to avoid crowded places. Immunocompromised clients undergoing chemotherapy are at a higher risk of infections, so avoiding crowded places can help reduce exposure to pathogens. Wearing a mask at home is not necessary unless someone in the household is sick. Drinking unfiltered water can introduce harmful bacteria, increasing the risk of infection. Avoiding washing hands frequently is incorrect as hand hygiene is crucial in preventing the spread of infections.