Correct Answer: A

Rationale: Dry mouth is a common side effect of MAO inhibitors like phenelzine due to their anticholinergic effects. Choices B, C, and D are incorrect as indigestion, diarrhea, and pink urine are not commonly associated side effects of phenelzine.

Correct Answer: C

Rationale: The most important assessment to perform for a client on a methadone maintenance program is to evaluate the client's respiratory status. Methadone can cause respiratory depression as a side effect, making it crucial to monitor the client's breathing to prevent potential complications. Monitoring for signs of withdrawal (choice A) is important but not the most critical in this scenario. Assessing for signs of methadone toxicity (choice B) is relevant, but respiratory status takes precedence due to the risk of respiratory depression. Checking the client's blood pressure regularly (choice D) is important for overall assessment but is not as crucial as monitoring respiratory status in this case.

Correct Answer: A

Rationale: The correct answer is A: "It may take 4-6 weeks for the medication to be effective." SSRIs like fluoxetine typically take 4-6 weeks to reach their full effect, so clients should be informed to expect a gradual improvement in symptoms. Choice B is incorrect because fluoxetine is usually taken in the morning to prevent sleep disturbances. Choice C is incorrect as there is no specific need to avoid consuming dairy products while taking fluoxetine. Choice D is incorrect because clients should never stop taking antidepressants abruptly, as it can lead to withdrawal symptoms and worsening of the condition.

Correct Answer: B

Rationale: The most important instruction for a client prescribed lithium carbonate is not to change their salt intake. Alterations in sodium levels can impact lithium levels, leading to an increased risk of toxicity. Choice A is not crucial for lithium carbonate administration. While hydration is essential, maintaining a consistent salt intake is more critical than just increasing water intake (Choice C). Although caffeine can interact with lithium, it is not as important as maintaining a consistent salt intake (Choice D).

Correct Answer: B

Rationale: The most therapeutic nursing intervention for a client with obsessive-compulsive disorder (OCD) who repeatedly checks locks is to encourage the client to discuss the thoughts and feelings behind the behavior. By exploring the underlying anxiety and triggers, the client can work towards understanding and managing their compulsions. Choice A is incorrect because allowing the client to continue the behavior does not address the root cause or help modify the behavior. Choice C is inappropriate as restricting access to locks can increase anxiety and worsen symptoms. Choice D of scheduling specific times for checking locks does not address the underlying psychological issues driving the behavior.