Correct Answer: B

Rationale: In a situation where a client is displaying aggressive behavior, the most important action for the nurse to implement is to obtain staff assistance to help diffuse the escalating situation. This approach ensures the safety of all individuals involved and prevents the situation from escalating further. Calmly approaching the client and removing the chair directly could agitate the client further and pose a risk to the nurse. Offering feedback about the client's behavior may not address the immediate safety concerns. Summoning hospital security guards as a 'show of force' should be a last resort after other de-escalation attempts have failed, as it may further provoke the client.

Correct Answer: C

Rationale: (C) is the best response as it redirects the client to a safer, familiar place. (A) is dismissive and does not address the client's needs directly. (B) labels the behavior, which may increase the client's anxiety. (D) is scolding and may not be helpful in the situation.

Correct Answer: C

Rationale: The correct answer is C: White blood cell count. Clozapine can lead to agranulocytosis, a severe drop in white blood cells, which can be life-threatening. Monitoring the white blood cell count is crucial to detect this condition early. Choices A, B, and D are incorrect because while liver and kidney function tests are important in monitoring other aspects of health, the most critical concern with clozapine therapy is the risk of agranulocytosis, making monitoring white blood cell count the priority.

Correct Answer: B

Rationale: Asking the client what the voices are saying is the most appropriate intervention as it helps the nurse assess the content of the hallucinations and the potential risk they may pose. Encouraging the client to ignore the voices (Choice A) may not address the underlying issue or provide valuable information for the nurse. Distracting the client with a new activity (Choice C) may temporarily divert attention but does not address the hallucinations. Telling the client that the voices are not real (Choice D) may invalidate the client's experience and can lead to distrust in the therapeutic relationship.

Correct Answer: D

Rationale: The correct answer is to refer the client for a psychiatric evaluation. The client's statement indicating hearing voices telling them to hurt themselves is a serious concern and suggests a risk for self-harm. Referring the client for a psychiatric evaluation is crucial for further assessment and intervention by mental health professionals. Choice A is incorrect because ignoring the voices may not address the client's safety. Choice B is incorrect as it oversimplifies the situation and does not address the immediate risk. Choice C is not as comprehensive as referring for a psychiatric evaluation, which is necessary in this situation.