A patient with posttraumatic stress disorder (PTSD) is prescribed prazosin. The nurse understands that this medication is used to treat which symptom of PTSD?

Correct Answer: B

Rationale: Prazosin is a medication often prescribed to manage nightmares in patients with PTSD. It works by blocking the action of adrenaline on specific receptors, which helps in reducing the intensity and frequency of nightmares. While flashbacks, hypervigilance, and depression are also common symptoms of PTSD, prazosin is specifically indicated for nightmares associated with the disorder. Flashbacks are typically addressed through therapies like cognitive-behavioral therapy, hypervigilance may be managed through counseling and coping strategies, and depression may necessitate antidepressant medications or therapy tailored for depression.

Correct Answer: B

Rationale: Serotonin syndrome is characterized by a triad of symptoms: hypertension, tachycardia, and hyperthermia. Therefore, the correct answer is B. Hypotension, bradycardia, and hypothermia (choice A) are not typical findings in serotonin syndrome. Hypotension, tachycardia, and hypothermia (choice C) are also not consistent with serotonin syndrome. Hypertension, bradycardia, and hyperthermia (choice D) do not align with the characteristic symptoms of serotonin syndrome. Recognizing the key symptoms of serotonin syndrome is crucial for prompt identification and intervention to prevent serious complications.

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: When a patient is prescribed risperidone, an atypical antipsychotic, the nurse should monitor for weight gain as it is a common side effect of this medication. Weight gain can occur due to metabolic changes and increased appetite associated with risperidone use. Agranulocytosis is a severe decrease in a type of white blood cells, and it is not a common side effect of risperidone. Hair loss and hyperthyroidism are also not typically associated with risperidone use.

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.