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: 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: B

Rationale: Valproic acid is commonly prescribed as a mood stabilizer for the treatment of bipolar disorder. It helps in controlling mood swings, preventing manic episodes, and reducing the risk of depressive episodes in individuals with bipolar disorder. Sertraline is an antidepressant typically used for major depressive disorder and other anxiety disorders, not for bipolar disorder. Clozapine and Haloperidol are antipsychotic medications primarily used in schizophrenia and other psychotic disorders, not as first-line treatments for bipolar disorder.

Correct Answer: B

Rationale: Excessive worry is a characteristic feature of generalized anxiety disorder (GAD). Patients with GAD experience persistent and excessive worry about various aspects of their life, such as work, health, or family, even when there is little or no reason for concern. This chronic worrying can significantly impact their daily functioning and quality of life. Flashbacks are more commonly associated with post-traumatic stress disorder (PTSD), hallucinations are more typical in conditions like schizophrenia, while compulsive behaviors are seen in obsessive-compulsive disorder (OCD). Therefore, in the context of GAD, excessive worry is the symptom that the nurse is most likely to observe.

Correct Answer: B

Rationale: The most crucial initial treatment goal for anorexia nervosa is restoring nutritional status. This is essential to prevent life-threatening complications associated with severe malnutrition, such as organ damage and cardiac issues. Addressing distorted body image, resolving family conflicts, and increasing social interactions are important aspects of treatment, but they are secondary to the critical need of restoring the patient's nutritional status to ensure their physical well-being and recovery.