Correct Answer: B

Rationale: The correct action the nurse should take when caring for a client receiving brachytherapy is to limit the client's visitors to 30 minutes per day. This is crucial to reduce exposure to radiation and maintain safety during the brachytherapy procedure. Cleansing equipment before removal from the client's room may be important for infection control but is not directly related to brachytherapy procedures. Discarding the client's linens in a double bag and discarding the radioactive source in a biohazard bag are incorrect choices as they do not specifically address the safety measures needed during brachytherapy for prostate cancer.

Correct Answer: B

Rationale: Clients with a low platelet count are at risk of bleeding and infection. Monitoring the client's temperature every 4 hours is crucial to detect early signs of infection, as they may not be able to mount a typical immune response due to their compromised platelet count. Administering aspirin (choice A) is contraindicated in clients with low platelet counts as it can further increase the risk of bleeding. Monitoring urine output (choice C) and checking for stool in a colostomy bag (choice D) are important aspects of care but are not the priority in a client with low platelet count.

Correct Answer: C

Rationale: The correct answer is C: Tetanus diphtheria and acellular pertussis (Tdap) vaccine. The Tdap vaccine can be safely administered during pregnancy to protect both the mother and the newborn against whooping cough. Choices A, B, and D are incorrect because the Varicella vaccine, Inactivated polio vaccine, and Inactivated influenza vaccine are generally not recommended during pregnancy due to safety concerns.

Correct Answer: C

Rationale: The correct instruction the nurse should include is to advise the client to eat small, frequent meals to reduce symptoms of Crohn's disease. This eating pattern can help manage symptoms by reducing the workload on the digestive system. Choice A is incorrect because foods high in fiber can aggravate symptoms in Crohn's disease. Choice B is incorrect because not all individuals with Crohn's disease need to avoid dairy products, and it is not a universal recommendation. Choice D is incorrect because increasing whole grains may not be suitable for everyone with Crohn's disease, as it can worsen symptoms in some cases.

Correct Answer: C

Rationale: In clients with Cushing's syndrome, the nurse should expect hyperkalemia. Cushing's syndrome is characterized by excess cortisol levels, which can lead to potassium retention and result in hyperkalemia. Choices A, B, and D are incorrect. Hypotension is not typically associated with Cushing's syndrome; instead, hypertension is more common due to the effects of cortisol. Weight gain, rather than weight loss, is a common symptom of Cushing's syndrome. Hypercalcemia is not a typical finding in Cushing's syndrome; instead, hypocalcemia may occur due to increased urinary calcium excretion.