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, 'Sexual dysfunction.' Paroxetine, an SSRI commonly prescribed for OCD, can lead to sexual dysfunction as a side effect. Patients should be educated about this potential adverse effect to ensure they are aware and can seek appropriate management if needed. Choices A, B, and D are incorrect because insomnia, weight loss, and hypertension are not typically associated with paroxetine use as common side effects in patients with OCD.

Correct Answer: C

Rationale: When a patient with schizophrenia is prescribed clozapine, regular monitoring for agranulocytosis is essential. Agranulocytosis is a severe reduction in white blood cells that can be life-threatening. Monitoring white blood cell counts is crucial to detect this side effect early and prevent serious complications. Weight loss (Choice A) is not a common side effect of clozapine. Hypertension (Choice B) and hyperthyroidism (Choice D) are also not typically associated with clozapine use, making them incorrect choices for regular monitoring.

Correct Answer: C

Rationale: Methylphenidate is a central nervous system stimulant commonly used in the treatment of ADHD. It helps improve focus, attention, and impulse control in individuals with ADHD. Haloperidol and clozapine are antipsychotic medications typically used for other conditions such as schizophrenia, while fluoxetine is a selective serotonin reuptake inhibitor commonly used to treat depression and anxiety disorders. Therefore, the correct answer is Methylphenidate (Choice C).

Correct Answer: B

Rationale: Sertraline is a selective serotonin reuptake inhibitor (SSRI) commonly used to treat social anxiety disorder. SSRIs are a first-line pharmacological treatment for social anxiety disorder due to their effectiveness in reducing anxiety symptoms by increasing serotonin levels in the brain, which helps regulate mood and emotions. Methylphenidate is a stimulant primarily used in attention deficit hyperactivity disorder (ADHD) but not in social anxiety disorder. Lithium is typically used in bipolar disorder, while haloperidol is an antipsychotic medication more commonly used in conditions like schizophrenia. Therefore, the correct choice for treating social anxiety disorder is Sertraline (B).