Nursing Elites

1. Each statement is true of calcium within saliva, except one. Which is the exception?

• A. Saliva is supersaturated with calcium.
• B. Saliva is a source of calcium to mineralize an immature or demineralized enamel surface.
• C. Calcium and phosphate in saliva provide a buffering action.
• D. Calcium within saliva increases dental caries.

Correct answer: D

Rationale: The correct answer is D. Calcium within saliva does not increase dental caries; in fact, the buffering action provided by calcium and phosphate in saliva inhibits caries formation by preventing the dissolution of enamel by plaque biofilm. Choice A is correct as saliva is indeed supersaturated with calcium. Choice B is correct as saliva serves as a source of calcium to mineralize an immature or demineralized enamel surface. Choice C is correct as calcium and phosphate in saliva do provide a buffering action to protect teeth from acids.

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. Has Healthy People (HP 2020), issued by the U.S. Department of Health and Human Services, resulted in a reduction of deaths from cardiovascular disease, stroke, and some cancers, as well as decreased dental caries in children aged 2 to 4 years and adults aged 53 to 44 years?

• A. Yes, both statements are true.
• B. No, 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: B

Rationale: Both statements are false. While Healthy People (HP 2020) has contributed to a reduction in deaths from cardiovascular disease, stroke, and some cancers, it did not result in decreased dental caries in children aged 2 to 4 years and adults aged 53 to 44 years. Therefore, the correct answer is B. Choice A is incorrect because the second statement is false. Choice C is incorrect as the first statement is also false. Choice D is incorrect as the second statement is false.

4. The ideal time to begin taking folate to prevent neural tube defects is:

• A. Before conception
• B. Once pregnancy begins
• C. At 6 weeks
• D. Upon completion of the first trimester

Correct answer: A

Rationale: Folate is crucial before conception to prevent neural tube defects. Neural tube development occurs early in pregnancy, often before a woman knows she is pregnant.

5. The parent of a child newly diagnosed with lactose intolerance is being taught by the nurse. Which food items identified by the parent indicate an understanding of foods to avoid?

• A. Popcorn, seeds, and any foods containing nuts.
• B. Milk, cheese, ice cream, and puddings.
• C. Wheat, rye, barley, and commercially baked goods.
• D. Eggs, ham, bacon, and canned meats.

Correct answer: B

Rationale: The correct answer is B. Milk, cheese, ice cream, and puddings contain lactose, which individuals with lactose intolerance should avoid. Choices A, C, and D do not contain lactose and are not typically problematic for individuals with lactose intolerance.

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