A patient with major depressive disorder is started on venlafaxine. Which class of antidepressant does this medication belong to?

Correct Answer: D

Rationale: Venlafaxine is classified as a serotonin-norepinephrine reuptake inhibitor (SNRI). SNRIs work by increasing the levels of both serotonin and norepinephrine in the brain, which helps alleviate symptoms of depression. This mechanism of action distinguishes SNRIs from other classes of antidepressants like SSRIs, TCAs, and MAOIs, making venlafaxine an effective choice for patients with major depressive disorder. Therefore, the correct answer is D. Choice A, SSRIs, primarily target serotonin reuptake only. Choice B, TCAs, work by inhibiting the reuptake of norepinephrine and serotonin, but they are not as selective as SNRIs. Choice C, MAOIs, inhibit the enzyme monoamine oxidase, leading to increased levels of various neurotransmitters, including serotonin and norepinephrine, but they are typically used as second- or third-line agents due to dietary restrictions and potential side effects.

Correct Answer: C

Rationale: During a severe anxiety episode, it's crucial to stay with the patient and create a quiet environment. This approach helps reduce anxiety by providing a sense of safety and support. Encouraging the patient to talk about their feelings may not be effective during an acute episode of severe anxiety. Using a firm, authoritative approach can escalate the situation and worsen the anxiety. Suggesting distractions like watching TV may not address the root cause of the anxiety or provide the necessary support.

Correct Answer: C

Rationale: Delusions are considered a positive symptom of schizophrenia. Positive symptoms represent an excess or distortion of normal functions, such as hallucinations, delusions, or disorganized speech or behavior. In contrast, negative symptoms involve a decrease or absence of normal functions, like alogia (poverty of speech), anhedonia (inability to experience pleasure), and flat affect (reduced expression of emotions). Therefore, in the context of schizophrenia, delusions fall under the category of positive symptoms.

Correct Answer: B

Rationale: When a patient with PTSD is experiencing flashbacks, the most appropriate intervention is to help them reorient to the present. This intervention can assist in reducing the intensity of the flashback and providing a sense of safety for the patient. Choice A is incorrect because encouraging the patient to talk about the trauma during a flashback may exacerbate their distress. Choice C is incorrect as leaving the patient alone can increase their feelings of isolation and fear. Choice D is incorrect because reminding the patient that the flashback is not real may invalidate their experience and increase their sense of disconnection.

Correct Answer: C

Rationale: Extrapyramidal symptoms, such as tremors and rigidity, are frequently observed as side effects of antipsychotic medications. These symptoms result from the medications' influence on dopamine receptors in the brain. Choice A, hyperactivity, is not a typical side effect of antipsychotic medications. Choice B, weight loss, is less common compared to weight gain. Choice D, insomnia, though possible, is not as prevalent as extrapyramidal symptoms in individuals taking antipsychotic medications.

Correct Answer: B

Rationale: The correct answer is B: Regular blood tests are crucial when taking valproic acid to monitor the medication levels in the bloodstream. This monitoring helps ensure that the patient is receiving the correct dosage for effective treatment and to prevent adverse effects associated with either subtherapeutic or toxic levels of the medication. Choice A is incorrect because there is no specific interaction between valproic acid and dairy products. Choice C is incorrect as valproic acid can generally be taken with food to reduce gastrointestinal side effects. Choice D is incorrect as abruptly stopping valproic acid can lead to withdrawal symptoms and worsening of the condition.

Correct Answer: B

Rationale: Exposure and response prevention (ERP) is a specific type of CBT that is considered the most effective treatment for OCD. ERP involves exposing the individual to anxiety-provoking stimuli and preventing the usual compulsive responses, leading to a decreased anxiety response over time. This type of therapy helps individuals learn to tolerate the anxiety triggered by obsessions without engaging in compulsions, ultimately reducing OCD symptoms. Choices A, C, and D are incorrect. Dialectical behavior therapy (Choice A) is more commonly used for treating conditions like borderline personality disorder, not OCD. Interpersonal therapy (Choice C) focuses on improving interpersonal relationships and communication skills, which is not the primary approach for OCD. Supportive therapy (Choice D) provides emotional support and guidance but is not as effective as ERP in treating OCD.

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.

Correct Answer: A

Rationale: The most appropriate therapeutic approach for a patient diagnosed with borderline personality disorder exhibiting self-harming behavior is dialectical behavior therapy (DBT). DBT is specifically designed to address the core symptoms of borderline personality disorder, including self-harming behaviors. It focuses on teaching patients skills to manage emotions, improve interpersonal relationships, and enhance distress tolerance. Psychoanalysis (Choice B) is not the most appropriate for immediate symptom management in this case. Supportive therapy (Choice C) may not provide the structured approach needed to address self-harming behaviors effectively. Pharmacotherapy (Choice D) may be used as an adjunct in some cases, but DBT is the frontline therapy for managing self-harming behaviors in borderline personality disorder.