Correct Answer: B

Rationale: The correct answer is B: ondansetron (Zofran). Ondansetron is a selective serotonin receptor antagonist that effectively targets the serotonin receptors in the chemoreceptor trigger zone to relieve nausea and vomiting. It is commonly used in chemotherapy-induced nausea and vomiting. A: Metoclopramide is a dopamine receptor antagonist and primarily used for gastrointestinal motility disorders, not specifically for nausea relief. C: Hydroxyzine is an antihistamine with sedative properties, primarily used for anxiety and itching, not specifically for nausea relief. D: Prochlorperazine is a dopamine receptor antagonist primarily used for treating psychotic disorders, not specifically for nausea relief. In summary, ondansetron is the correct choice as it targets serotonin receptors specifically for relieving nausea and vomiting, whereas the other options focus on different mechanisms of action.

Correct Answer: A

Rationale: The correct answer is A: Administer nitroglycerin. The priority nursing action for a client experiencing severe chest pain is to administer nitroglycerin to help dilate the blood vessels and improve blood flow to the heart, reducing chest pain. This action helps to address the immediate issue of chest pain and potential heart damage. Administering morphine (B) may be considered if chest pain persists despite nitroglycerin. Administering oxygen (C) can also be helpful but is not the initial priority. Monitoring blood pressure (D) is important but not the most urgent action in this scenario.

Correct Answer: A

Rationale: The correct answer is A: Inspecting feet daily for signs of injury. This is crucial for patients with diabetes and peripheral neuropathy to prevent complications like infections and ulcers. By inspecting their feet daily, the patient can identify any injuries or abnormalities early and seek prompt medical attention. This proactive approach can help prevent serious consequences such as amputations. Summary of incorrect choices: B: Taking medications only when experiencing symptoms - This is not recommended as medications for diabetes and neuropathy are often prescribed to prevent complications and manage the conditions on a daily basis. C: Exercising to increase foot circulation - While exercise is beneficial, patients with peripheral neuropathy may have decreased sensation in their feet, increasing the risk of injury during exercise. D: Wearing tight-fitting shoes to avoid blisters - Tight-fitting shoes can cause pressure points and increase the risk of foot injuries, especially in patients with neuropathy.

Correct Answer: B

Rationale: The correct answer is B because reducing alcohol consumption and limiting sodium intake are both crucial lifestyle modifications for managing hypertension. Alcohol can raise blood pressure, while excess sodium can contribute to hypertension. By prioritizing these changes, the patient can better control their blood pressure. Choice A is incorrect because increasing sodium intake can worsen hypertension due to fluid retention. Choice C is incorrect as decreasing physical activity can lead to weight gain and worsen hypertension. Choice D is incorrect as processed foods are often high in sodium and unhealthy fats, which can negatively impact blood pressure.

Correct Answer: A

Rationale: The correct answer is A, administer insulin, because hyperglycemia indicates high blood sugar levels which can be effectively lowered by administering insulin. Insulin helps to move glucose from the blood into cells for energy production. Administering fluids (B) can be helpful for dehydration, but it does not directly address the high blood sugar levels. Encouraging activity (C) may help lower blood sugar levels over time, but in the immediate situation, administering insulin is more effective. Encouraging deep breathing (D) does not directly address hyperglycemia and would not be the appropriate first step in managing this condition.