Correct Answer: A

Rationale: In multiple myeloma, the nurse would expect to note an increased calcium level in the laboratory results. This elevation is due to bone destruction caused by the disease, releasing calcium into the bloodstream. Increased white blood cells (Choice B) are not typically associated with multiple myeloma. Additionally, a decreased blood urea nitrogen level (Choice C) is not a common finding in this disorder. Multiple myeloma is characterized by the proliferation of abnormal plasma cells in the bone marrow, leading to an increased number of plasma cells, not a decreased number (Choice D). Therefore, the correct answer is an increased calcium level.

Correct Answer: C

Rationale: The correct answer is to schedule the client for a chest x-ray. A positive Mantoux test indicates exposure to TB, but it does not confirm active disease. A chest x-ray is necessary to assess the presence of active TB disease. Isolating the client in a private room (Choice A) is not necessary based solely on a positive Mantoux test result. Administering isoniazid (INH) (Choice B) or beginning a 9-month course of medication therapy (Choice D) is premature without confirming active TB through a chest x-ray.

Correct Answer: D

Rationale: The correct answer is to dispose of the antineoplastic wastes in the hazardous waste receptacle. Antineoplastic agents are hazardous materials, and proper disposal is crucial to prevent harm to individuals and the environment. Option A is incorrect because adjusting the dose based on the patient's present symptoms may not be safe without proper authorization. Option B is incorrect as hand hygiene should be performed both before and after administering medications. Option C is incorrect as gloves and a lab coat should be worn primarily during handling and administration, not just during preparation.

Correct Answer: D

Rationale: The correct answer is D. When a patient develops erythema following radiation therapy, it is essential to avoid further irritation and potential infection. Using soap on the affected area can exacerbate the condition. Applying ice (choice A) may provide temporary relief for discomfort but does not address the underlying issue. Keeping the area cleanly shaven (choice B) is not necessary and may increase the risk of skin irritation. Applying petroleum jelly (choice C) can trap heat and worsen the erythema, so it is not recommended.

Correct Answer: D

Rationale: The correct answer is D. A red, warm, swollen calf may indicate a deep vein thrombosis, which is a medical emergency. This finding requires immediate notification of the primary health care provider to prevent potential complications such as pulmonary embolism. Choices A, B, and C are not indicative of life-threatening conditions and should be monitored but do not require immediate notification like a suspected deep vein thrombosis.