ATI Mental Health Practice A

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: The correct answer is C: 'For short-term use due to the risk of dependence.' Benzodiazepines are usually prescribed for short-term relief of anxiety symptoms due to the risk of dependence. Prolonged use can lead to tolerance, dependence, and other adverse effects, so they are not typically used for long-term maintenance therapy (choice A). They are not considered first-line treatments for panic disorder (choice B) and are not primarily used to treat depression symptoms (choice D), as their main indication is for anxiety and panic disorders.

Correct Answer: B

Rationale: During a manic episode in bipolar disorder, individuals may experience heightened energy levels, impulsivity, and decreased need for sleep. Providing a structured and low-stimulus environment is crucial in managing manic episodes. This intervention helps reduce overstimulation and provides a calm and predictable setting, which can be beneficial in helping the patient regain control and stability. Group activities and high-energy physical activities may exacerbate the symptoms of mania by increasing stimulation and excitement. Allowing the patient to set their schedule may not provide the necessary structure needed during a manic episode, hence making it less appropriate.

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: The correct answer is C: Decreased need for sleep. A decreased need for sleep is a hallmark symptom of a manic episode in bipolar disorder. During manic episodes, individuals may experience significantly reduced sleep without feeling tired, which can lead to increased energy levels, impulsivity, and other manic symptoms. Excessive sleeping (choice A) is more indicative of depression rather than mania. Low self-esteem (choice B) and anhedonia (choice D) are also more commonly associated with depressive episodes rather than manic episodes in bipolar disorder.