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. Is it correct that eliminating sucrose from the diet leads to a significant reduction in dental caries, and that the best advice is to consume sugar in moderation and limit the frequency of sugar exposure?

• A. Both statements are true
• B. Both statements are false
• C. The first statement is true; the second is false
• D. The first statement is false; the second is true

Correct answer: D

Rationale: The first statement is incorrect because dental caries are not solely caused by sucrose. They are the result of a complex interaction of multiple factors, including the type of bacteria in the mouth, the host's diet, oral hygiene, and salivary flow. The second statement is correct as consuming sugar in moderation and limiting the frequency of sugar exposure are indeed effective strategies to prevent dental caries. Therefore, the answer is option D: The first statement is false; the second is true.

3. People with only one arm or hand may benefit from using a ____ when eating?

• A. dish with suction cups
• B. rocker knife
• C. utensil holder
• D. flexible straw

Correct answer: B

Rationale: A rocker knife is specifically designed for individuals with limited use of one hand or arm, allowing them to cut food easily. This makes it a suitable option for people with only one arm or hand. Choice A, a dish with suction cups, may not directly aid in cutting food with one hand. Choice C, an utensil holder, is not typically used for cutting food. Choice D, a flexible straw, is more related to drinking liquids and not specifically designed to assist in cutting food one-handed.

4. Which set of guidelines is intended to assess nutrient adequacy or plan intake of a population group, not individuals?

• A. RDA
• B. EAR
• C. DRA
• D. UL

Correct answer: B

Rationale: The Estimated Average Requirement (EAR) is the correct choice because it is specifically designed to assess the nutrient adequacy of population groups, not individuals. The Recommended Dietary Allowance (RDA) (choice A) is the average daily level of intake sufficient to meet the nutrient requirements of nearly all (97%-98%) healthy individuals in a particular life stage and gender group. The Dietary Reference Intake (DRI) (choice C) includes the EAR, RDA, Adequate Intake (AI), and UL, making it a broader set of nutrient reference values. The Tolerable Upper Intake Level (UL) (choice D) is the highest average daily nutrient intake level that is likely to pose no risk of adverse health effects to almost all individuals in the general population.

5. To prevent baby bottle tooth decay, what should the nurse instruct?

• A. Water
• B. Milk
• C. Iron-fortified formula
• D. Unsweetened fruit juice

Correct answer: A

Rationale: The correct answer is A: Water. Water is the best choice to prevent baby bottle tooth decay as it does not cause tooth decay and is a good option for bedtime bottles. Milk (choice B) and iron-fortified formula (choice C) contain sugars that can contribute to tooth decay. Unsweetened fruit juice (choice D) also contains natural sugars that can be harmful to the baby's teeth.

Similar Questions