Correct Answer: A

Rationale: The correct action by the nurse is to assess the client's gait and balance. Severe low back pain in a client with a history of prostate cancer may indicate spinal cord compression, a serious complication. Assessing gait and balance can help determine if there is any spinal cord involvement, which requires immediate medical attention. Asking about changes in urinary symptoms (choice B) is important to assess for possible urinary obstruction, but assessing gait and balance takes precedence due to the risk of spinal cord compression. Documenting the report thoroughly (choice C) is essential but not the most immediate action needed. Inquiring about recent activities (choice D) is not as critical as assessing for spinal cord involvement.

Correct Answer: D

Rationale: The correct answer is D, 'Mouth sores.' Mouth sores (stomatitis) are a common and potentially serious side effect of chemotherapy. They can lead to difficulty eating, increased risk of infection, and overall decreased quality of life for the client. While alopecia, fatigue, and nausea/vomiting are also common side effects of chemotherapy, they are generally manageable and do not pose the same level of immediate concern as the development of mouth sores in a client undergoing chemotherapy.

Correct Answer: A

Rationale: When a client is receiving rituximab, the nurse's priority assessment should be monitoring the blood pressure. Rituximab can lead to infusion-related reactions, such as hypotension. Therefore, assessing the client's blood pressure is crucial to detect and manage any potential adverse reactions promptly. While monitoring temperature, oral mucous membranes, and pain are essential aspects of care, they are not the priority when a client is receiving rituximab.

Correct Answer: B

Rationale: The correct answer is B because the skin at the radiation site is sensitive to sunlight, and exposure can cause further damage. It is crucial to protect the area from direct sunlight to prevent skin irritation or burns. Choice A is incorrect as salt water typically does not pose a significant risk to the radiation site. Choice C is a positive and encouraging response but does not provide necessary advice for post-radiation care. Choice D, while important in some cases, is not directly related to the client's beach vacation after completing radiation treatments.

Correct Answer: A

Rationale: The correct answer is A: Cardiac function. Imatinib can cause fluid retention and heart failure, so cardiac function should be closely monitored. Renal function (choice B) is not typically affected by imatinib. Liver function (choice C) is not the primary concern with this medication. Pulmonary function (choice D) is not directly impacted by imatinib therapy.