Correct Answer: A

Rationale: Administering prescribed medication to manage symptoms is the priority intervention for a client with symptoms of mania. During a manic episode, the client may be at risk of harm to self or others due to impulsivity and poor judgment. Medication helps stabilize the client, reduce manic symptoms, and prevent further escalation. Providing a calm environment (choice B) is important but not the priority when the client's safety is at risk. Encouraging expression of feelings (choice C) and reinforcing medication adherence (choice D) are valuable aspects of care but addressing the acute symptoms of mania takes precedence to ensure the client's immediate safety and well-being.

Correct Answer: B

Rationale: The case manager (B) is responsible for coordinating community services, making them the best person to refer the client to first as they can describe available treatment options. The emergency room nurse (A) is unnecessary unless the client's behaviors pose imminent threats. The clinic healthcare provider (C) and support group sponsor (D) may be useful but coordinating a treatment program tailored to the client's needs is the priority in this scenario.

Correct Answer: C

Rationale: The correct answer is C. Obsessions do not cause compulsions; rather, obsessions are intrusive, unwanted thoughts, images, or urges that trigger intensely distressing feelings, while compulsions are repetitive behaviors or mental acts that a person feels driven to perform in response to an obsession or according to rules that must be applied rigidly. Choices A, B, and D are incorrect. Choice A is incorrect because compulsions are behaviors or mental acts aimed at reducing distress or preventing a dreaded event or situation. Choice B is incorrect because while anxiety is often a significant component of OCD, it is not the only reason for the disorder. Choice D is incorrect because obsessive thoughts are not solely linked to levels of neurochemicals but are more complex and multifactorial.

Correct Answer: C

Rationale: The correct answer is C. PET scans are primarily used to detect and observe the metabolic activity in various parts of the brain. This helps in diagnosing conditions related to brain function, such as tumors, brain disorders, and overall brain activity. Choices A, B, and D are incorrect because PET scans focus on metabolic activity and functions in the brain rather than solely indicating the presence of tumors, outlining brain structures, or showing biochemical levels of neurotransmitters.

Correct Answer: D

Rationale: When caring for a suicidal client, providing authority, taking action, and encouraging the client's participation in their care are essential. Choice A is incorrect as it may not be sufficient for the critical situation of a suicidal client. Choice B, while offering hope, may not address the immediate risk of harm. Choice C's attitude of detachment and confrontation can be counterproductive in establishing trust and rapport with the client. Therefore, the most appropriate intervention is to provide authority, take action to ensure safety, and involve the client in the care process.