Nursing Elites

1. The principal cation in plasma and interstitial fluid is:

• A. Sodium
• B. Potassium
• C. Calcium
• D. Magnesium

Correct answer: A

Rationale: The principal cation in plasma and interstitial fluid is sodium. Sodium plays a crucial role in maintaining fluid balance and is the primary cation in extracellular fluids like plasma and interstitial fluid. Potassium is the primary cation within cells, not in extracellular fluids, making it an incorrect choice. Calcium and magnesium are essential minerals but are not the principal cations in plasma and interstitial fluid, so they are also incorrect choices.

2. What is the recommended dietary intervention for a patient with hyperlipidemia?

• A. Increase saturated fat intake
• B. Reduce fiber intake
• C. Increase dietary fiber intake
• D. Reduce protein intake

Correct answer: C

Rationale: Increasing dietary fiber can help reduce cholesterol levels in patients with hyperlipidemia.

3. An estimated _____ percent of persons in the United States who have HIV infection are unaware that they are infected.

• A. 4%
• B. 21%
• C. 34%
• D. 49%

Correct answer: B

Rationale: The correct answer is B: '21%'. Approximately 21% of persons in the United States who have HIV infection are unaware that they are infected. This percentage represents a significant portion of individuals who are not aware of their HIV status, highlighting the importance of increased testing and awareness campaigns. Choices A, C, and D are incorrect as they do not align with the estimated percentage provided in the context.

4. A nurse is preparing to teach a group of clients about vitamins and minerals. The nurse should include in the teaching that which of the following minerals is necessary for the transmission of nerve impulses?

• A. Phosphorus
• B. Calcium
• C. Chloride
• D. Zinc

Correct answer: B

Rationale: Corrected Question: A nurse is preparing to teach a group of clients about vitamins and minerals. The nurse should include in the teaching that which of the following minerals is necessary for the transmission of nerve impulses? Correct Answer: Calcium Rationale: Calcium is crucial for nerve transmission, muscle contraction, and blood clotting. It plays a vital role in the proper functioning of the nervous system. Phosphorus is important for bone health and energy metabolism, not nerve impulse transmission. Chloride is an electrolyte important for fluid balance but not directly involved in nerve impulse transmission. Zinc is essential for immune function and wound healing but not specifically required for nerve impulse transmission.

5. A patient following a vegetarian diet might be at risk for deficiency in which nutrient?

• A. Vitamin C
• B. Vitamin B12
• C. Vitamin A
• D. Vitamin D

Correct answer: B

Rationale: Vitamin B12 is primarily found in animal products, so vegetarians may need supplementation.

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