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: B

Rationale: The correct answer is B: Reed-Sternberg cells. In Hodgkin lymphoma, the presence of Reed-Sternberg cells in lymph node biopsy is diagnostic. These cells are large, atypical cells originating from B-lymphocytes. They are distinctive in appearance and are key to diagnosing Hodgkin lymphoma. Choices A, C, and D are incorrect because Schwann cells are related to nerve function, Lewy bodies are associated with Parkinson's disease, and Loops of Henle are structures in the kidney, none of which are specific to Hodgkin lymphoma.

Correct Answer: A

Rationale: The correct answer is A. Elevating the knee gatch on the bed should be avoided in the care of a client who has undergone a vaginal hysterectomy. This action can inhibit venous return, increasing the risk of deep vein thrombosis or thrombophlebitis. Choices B, C, and D are appropriate nursing interventions for postoperative care to prevent complications and promote circulation.

Correct Answer: D

Rationale: An absolute neutrophil count of 500/mm3 indicates severe neutropenia, putting the client at high risk for infection. Neutrophils are crucial in fighting off infections; a low count increases susceptibility to infections. Platelet count, white blood cell count, and hemoglobin levels are within normal ranges and do not require immediate intervention in this scenario.

Correct Answer: D

Rationale: The correct answer is D: Teaching measures to prevent scalp injury. Alopecia makes the scalp more vulnerable to injury, so educating clients on protective measures is crucial. Choices A and B focus on emotional support and reassurance, which are important but secondary to physical safety. Referring clients to a wig shop (choice C) addresses appearance but does not directly address the physical risk associated with scalp vulnerability.