Nursing Elites

1. A patient with Parkinson's disease is prescribed levodopa. What dietary modification should the nurse suggest to the patient?

• A. Increase intake of vitamin C.
• B. Limit foods high in protein.
• C. Avoid foods rich in fiber.
• D. Increase sodium intake.

Correct answer: B

Rationale: The correct answer is to limit foods high in protein. Patients taking levodopa should restrict their intake of protein-rich foods because protein can interfere with the absorption of the medication. Levodopa competes with dietary proteins for absorption in the small intestine, potentially reducing the effectiveness of the medication. Therefore, by reducing protein intake, the patient can enhance the absorption and therapeutic effects of levodopa. Increasing vitamin C intake is not necessary for patients prescribed with levodopa. Avoiding foods rich in fiber or increasing sodium intake are not directly related to optimizing levodopa therapy and might not benefit the patient's condition.

2. The nurse is administering sevelamer (RenaGel) during lunch to a client with end-stage renal disease (ESRD). The client asks the nurse to bring the medication later. The nurse should describe which action of RenaGel as an explanation for taking it with meals?

• A. Prevents indigestion associated with the ingestion of spicy foods.
• B. Binds with phosphorus in foods and prevents absorption.
• C. Promotes stomach emptying and prevents gastric reflux.
• D. Buffers hydrochloric acid and prevents gastric erosion.

Correct answer: B

Rationale: Sevelamer (RenaGel) binds with phosphorus in foods to prevent its absorption, which is why it should be taken with meals. By taking RenaGel with meals, it can effectively bind with phosphorus from food, reducing the amount of phosphorus absorbed by the body, thus helping to manage hyperphosphatemia in clients with ESRD. Choices A, C, and D are incorrect because RenaGel's primary action is to bind with phosphorus in foods, not related to preventing indigestion, promoting stomach emptying, or buffering hydrochloric acid.

3. A patient with type 1 diabetes is prescribed insulin glargine. What is the primary characteristic of this insulin?

• A. Rapid-acting
• B. Intermediate-acting
• C. Long-acting
• D. Short-acting

Correct answer: C

Rationale: Insulin glargine is classified as a long-acting insulin. It is designed to provide a consistent level of insulin over approximately 24 hours, helping to keep blood glucose levels stable throughout the day. This long duration of action makes it suitable for basal insulin replacement in patients with type 1 diabetes, providing a background level of insulin to mimic the body's natural release of insulin between meals and overnight.

4. A patient with chronic heart failure is prescribed furosemide. What is the primary action of this medication?

• A. Increase cardiac output
• B. Reduce fluid retention
• C. Decrease heart rate
• D. Lower blood pressure

Correct answer: B

Rationale: Furosemide is a loop diuretic that acts by inhibiting sodium and chloride reabsorption in the loop of Henle, leading to increased diuresis. By reducing fluid retention, furosemide helps decrease the workload on the heart in patients with chronic heart failure. This medication does not directly increase cardiac output, decrease heart rate, or lower blood pressure as its primary action.

5. A 35-year-old man presents with fatigue, weight loss, and hyperpigmentation of the skin. Laboratory tests reveal hyponatremia, hyperkalemia, and low cortisol levels. What is the most likely diagnosis?

• A. Cushing's syndrome
• B. Addison's disease
• C. Hypothyroidism
• D. Pheochromocytoma

Correct answer: B

Rationale: The clinical presentation of a 35-year-old man with fatigue, weight loss, hyperpigmentation of the skin, hyponatremia, hyperkalemia, and low cortisol levels is classic for Addison's disease. These findings are consistent with primary adrenal insufficiency, where the adrenal glands fail to produce adequate cortisol. In Addison's disease, the adrenal cortex is damaged, leading to decreased cortisol production and elevated levels of ACTH. This results in symptoms such as fatigue, weight loss, and hyperpigmentation due to increased ACTH production stimulating melanocytes. Hyponatremia and hyperkalemia are common electrolyte abnormalities seen in Addison's disease due to aldosterone deficiency. Therefore, the correct diagnosis in this case is Addison's disease.

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