Correct Answer: B

Rationale: The correct answer is B. Instructing the client to take levothyroxine in the morning is important to prevent insomnia, a common side effect of this medication. Choice A is incorrect as levothyroxine should be taken on an empty stomach. Choice C is inaccurate because weight loss, not weight gain, is a potential side effect of levothyroxine. Choice D is not necessary as clients do not need to avoid foods containing iodine while taking levothyroxine.

Correct Answer: B

Rationale: The correct answer is B. Rifampin can cause a harmless reddish-orange discoloration of body fluids, including urine. Choice A is not related to rifampin; vision changes are not a common side effect of the medication. Choice C is more relevant to medications that cause photosensitivity reactions, not specifically rifampin. Choice D is incorrect because nausea is a common side effect of rifampin, but it does not warrant immediate discontinuation of the medication.

Correct Answer: A

Rationale: Correct Answer: Chicken breast. Spironolactone is a potassium-sparing diuretic, meaning it helps the body retain potassium. Foods high in potassium, like spinach and yogurt, should be avoided when taking spironolactone to prevent hyperkalemia. Chicken breast, being a low-potassium protein source, is a suitable recommendation for clients on spironolactone therapy.

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: B

Rationale: The correct answer is B: Serotonin syndrome. Serotonin syndrome can occur due to the interaction between citalopram, an SSRI, and St. John's Wort, an herbal supplement. Symptoms of serotonin syndrome include confusion, agitation, rapid heart rate, high blood pressure, dilated pupils, loss of muscle coordination, and sweating. Choices A, C, and D are incorrect as they are not typically associated with the interaction between citalopram and St. John's Wort. Tardive dyskinesia is a movement disorder associated with long-term use of certain medications, pseudoparkinsonism is a side effect of certain antipsychotic medications, and acute dystonia is a movement disorder caused by certain medications like antipsychotics.