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: A

Rationale: Encouraging deep, slow breathing is the most appropriate intervention for a patient experiencing a panic attack. This technique can help the patient regulate their breathing, reduce hyperventilation, and promote relaxation, which are essential in managing the symptoms of a panic attack. Choice B, encouraging the patient to talk about their feelings, may not be effective during an acute panic attack as the focus should be on calming the patient down. Choice C, leaving the patient alone, can lead to increased feelings of fear and isolation during a panic attack. Choice D, engaging the patient in physical activity, may exacerbate symptoms as it can increase the feeling of being out of control.

Correct Answer: B

Rationale: Patients prescribed lithium should maintain a consistent salt intake to prevent fluctuations in lithium levels. Salt intake can impact lithium levels, and sudden changes in salt intake can affect how the body absorbs and excretes lithium. Therefore, advising the patient to maintain a stable salt intake is crucial for the effectiveness and safety of lithium therapy. Choices A, C, and D are incorrect. Avoiding foods high in tyramine is more relevant for patients taking MAOIs, not lithium. Increasing protein intake or avoiding foods high in fat are not specific dietary recommendations for patients on lithium therapy.

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: C

Rationale: The correct answer is C: Dry mouth. Dry mouth is a common side effect associated with tricyclic antidepressants (TCAs). TCAs block acetylcholine receptors, leading to anticholinergic effects such as dry mouth, constipation, blurred vision, and urinary retention. It is important for the nurse to educate the patient about this side effect to promote awareness and provide appropriate management strategies, such as maintaining good oral hygiene and staying hydrated. Choice A, hypertension, is not a common side effect of TCAs. Choice B, diarrhea, is not a typical side effect of TCAs; in fact, TCAs are more likely to cause constipation. Choice D, weight loss, is less common with TCAs as they are more likely to cause weight gain.