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.

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.

Correct Answer: B

Rationale: The correct answer is to avoid exposing the irradiated area to direct sunlight. Direct sunlight can further damage the skin during radiation therapy. Choice A is incorrect because alcohol-based lotions can irritate the skin further. Choice C is incorrect because mild soap and water can be drying to the skin. Choice D is incorrect because applying ice packs can cause additional skin damage during radiation therapy.

Correct Answer: B

Rationale: The correct answer is to ensure the drainage bag is positioned above the bladder. This positioning prevents urine reflux into the bladder, reducing the risk of catheter-associated infections. Changing the catheter too frequently (Choice A) can actually increase the risk of infection by introducing pathogens. Performing routine catheter irrigation (Choice C) is no longer recommended as it can increase the risk of infection by introducing bacteria. Emptying the drainage bag every 4 hours (Choice D) is a standard practice to prevent urinary stasis but is not directly related to preventing catheter-associated infections.

Correct Answer: A

Rationale: The correct intervention the nurse should include in the care plan for a client with Alzheimer's disease is to provide reality orientation throughout the day. Reality orientation involves helping clients with Alzheimer's disease stay connected to the present, reducing confusion and disorientation. This intervention can help the client maintain a sense of time, place, and person. Choices B, C, and D are incorrect because limiting choices may lead to frustration, group therapy may not always be suitable for clients with Alzheimer's disease, and sensory stimulation activities may not address the core issue of disorientation in Alzheimer's disease.