Correct Answer: C

Rationale: The correct answer is dopamine. Dopamine dysregulation is a key factor in the development of schizophrenia. Excess dopamine activity in certain brain regions is associated with positive symptoms of schizophrenia, such as hallucinations and delusions. Dopaminergic medications that reduce dopamine levels are often used to manage these symptoms, further supporting the role of dopamine in schizophrenia. Serotonin (Choice A) is more commonly associated with mood regulation and is implicated in depression and anxiety disorders. Norepinephrine (Choice B) is involved in the body's 'fight or flight' response and is linked to conditions like anxiety and PTSD. Acetylcholine (Choice D) plays a role in muscle movement and memory but is not primarily implicated in schizophrenia.

Correct Answer: C

Rationale: Corrected Rationale: Selective serotonin reuptake inhibitors (SSRIs) are commonly associated with sexual dysfunction as a side effect. This adverse effect includes decreased libido, delayed orgasm, and erectile dysfunction. Educating patients about this potential side effect is crucial to manage expectations and consider appropriate interventions. Choices A, B, and D are incorrect as SSRIs are not typically associated with hypertension, diarrhea, or weight gain as common side effects.

Correct Answer: D

Rationale: The most appropriate nursing intervention when a patient with schizophrenia is experiencing auditory hallucinations is to ask the patient to describe the content of the hallucinations. This intervention helps assess the risk associated with the hallucinations and provides valuable insight into the patient's condition, aiding in developing an effective care plan. Encouraging the patient to ignore the voices (Choice A) may not address the underlying issues or risks associated with the hallucinations. Providing a structured and safe environment (Choice B) is important but does not directly address the hallucinations. Engaging the patient in a debate about the reality of the voices (Choice C) may worsen the situation by invalidating the patient's experiences.

Correct Answer: C

Rationale: Methylphenidate is a central nervous system stimulant often prescribed to manage symptoms of ADHD. It works by increasing the activity of certain neurotransmitters in the brain, helping to improve focus, attention, and impulse control in individuals with ADHD. Haloperidol, Sertraline, and Clozapine are not typically used as first-line treatments for ADHD. Haloperidol is an antipsychotic used in conditions like schizophrenia, Sertraline is an antidepressant primarily for mood disorders, and Clozapine is an atypical antipsychotic for treatment-resistant schizophrenia.

Correct Answer: A

Rationale: Exposure therapy is considered the most appropriate intervention for a patient with a phobia of flying. This therapeutic approach involves gradually exposing the individual to the feared stimulus, in this case, flying, in a controlled and supportive environment. By facing the fear in a structured manner, the patient can learn to manage their anxiety response and eventually reduce their phobia-related symptoms. While cognitive restructuring may help change negative thought patterns and medication management can alleviate symptoms, exposure therapy is specifically designed to address phobias through systematic desensitization, making it the most suitable intervention in this scenario. Psychoeducation aims to provide information and support but may not directly target the phobia itself.