Correct Answer: A

Rationale: The correct answer is A because feeling numb and detached from emotions is a common symptom of PTSD known as emotional numbing. This symptom is often seen in individuals who have experienced a traumatic event, such as the murder of a loved one. It is a defense mechanism that helps the person cope with overwhelming emotions. The other choices are incorrect: B: Being nervous and easily startled (hypervigilance) is more indicative of the hyperarousal symptom of PTSD, not emotional numbing. C: Difficulty sleeping is a common symptom of PTSD, known as insomnia, but it does not directly relate to emotional numbing. D: Reliving the traumatic event through flashbacks or intrusive memories is a symptom of PTSD, but it is not directly related to emotional numbing.

Correct Answer: C

Rationale: The priority nursing diagnosis in this case is C: Risk for suicide. This is because the patient is exhibiting suicidal ideation, which poses an immediate threat to their safety and well-being. Suicidal ideation requires urgent intervention to ensure the patient's safety. The patient's major depression, weight gain, and lack of symptom remission from the antidepressant medication further emphasize the seriousness of the situation. Choices A, B, and D are not the priority in this scenario as they do not address the immediate risk of harm to the patient. Imbalanced nutrition and chronic low self-esteem are important concerns but do not take precedence over the risk of suicide. Hopelessness, while relevant, is not as urgent as addressing the immediate risk of suicide.

Correct Answer: D

Rationale: The correct answer is D because haloperidol is a dopamine receptor antagonist. By blocking dopamine receptors, it reduces the activity of dopamine in the brain, which helps in reducing disturbed thought processes. Option A is incorrect as dopamine craving is not related to the mechanism of action of haloperidol. Option B is incorrect as enhancing dopamine receptors would increase dopamine activity, opposite to the intended effect of haloperidol. Option C is incorrect as increasing cellular production of dopamine would also increase dopamine activity, contradicting the purpose of using haloperidol.

Correct Answer: B

Rationale: The correct answer is B: Tourette’s disorder. The child's inability to sit still and jerking arms suggest motor tics, which are common in Tourette's disorder. Tourette's is characterized by involuntary repetitive movements or sounds. Choice A is incorrect as oppositional-defiant disorder does not involve physical tics. Choice C is a duplicate. Choice D is incorrect as it assumes defiance rather than considering a neurological explanation for the behavior.

Correct Answer: B

Rationale: The correct answer is B: Implementation. In the nursing process, implementation involves putting the plan of care into action. Encouraging the patient to attend a psychoeducational group daily is an action that is carried out as part of the plan to build social skills. This step focuses on executing interventions to achieve the desired outcomes. In contrast, assessment (A) involves collecting data, analysis (C) involves interpreting data, and evaluation (D) involves determining the effectiveness of interventions. Therefore, the correct placement for recording this item is in the implementation phase.