Nursing Elites

1. Each statement regarding the correlation between vitamin D and sun exposure is accurate, except one. Which is the exception?

• A. The body can produce sufficient amounts of vitamin D from sunlight.
• B. UV radiation can convert a precursor of vitamin D to vitamin D3 by penetrating uncovered skin.
• C. Sunscreen blocks the formation of vitamin D3.
• D. By the age of 70 years, the skin generally produces vitamin D at only half the level it did at the age of 20 years.

Correct answer: C

Rationale: While UV radiation can penetrate uncovered skin and convert a precursor of vitamin D to vitamin D3, sunscreen does block the formation of vitamin D3. Sunscreen is recommended by dermatologists to prevent sunburn and reduce the risk of skin cancer. The other choices are correct: the body can produce sufficient vitamin D from sunlight, UV radiation can convert a precursor of vitamin D to vitamin D3, and skin generally produces less vitamin D as a person ages.

2. Which food items should be avoided by a child with lactose intolerance?

• 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 should be avoided by a child with lactose intolerance because they contain lactose, which the child's body may have difficulty digesting. Option A is incorrect as popcorn, seeds, and foods containing nuts do not typically contain lactose. Option C lists wheat, rye, barley, and commercially baked goods, which are sources of gluten, not lactose. Option D includes eggs, ham, bacon, and canned meats, which are also not sources of lactose. Therefore, B is the most appropriate choice for a child with lactose intolerance.

3. Which food has the highest calcium content?

• A. 1 cup of carrot strips
• B. 3 oz of canned salmon
• C. 1 plain baked potato
• D. 1 cup of chopped chicken breast

Correct answer: B

Rationale: The highest source of calcium among the given choices is the 3 oz of canned salmon. This is due to the presence of bones in canned salmon, which are rich in calcium. The other options, including 1 cup of carrot strips, 1 plain baked potato, and 1 cup of chopped chicken breast, do not contain as much calcium due to the nature of their composition and lack of bone content.

4. Although a balanced diet is essential for tissue healing and repair, which of the following should the dental hygienist identify as the nutrient of highest priority for a patient with gingivitis or periodontal disease?

• A. Carbohydrates
• B. Vitamin C
• C. Vitamin D
• D. Monosaccharides

Correct answer: B

Rationale: Vitamin C is crucial for collagen production and connective tissue repair, making it a key nutrient for healing gingival tissues in patients with gingivitis or periodontal disease. Carbohydrates are a source of energy and not directly related to tissue repair. Vitamin D is important for bone health but is not the highest priority for gingival tissue healing. Monosaccharides are simple sugars and not as essential for tissue repair as Vitamin C.

5. Which food is a reliable source of B12 for a pregnant vegan client?

• A. Soybeans
• B. Algae
• C. Fortified soy milk
• D. Sea vegetables

Correct answer: C

Rationale: Fortified soy milk is a reliable source of vitamin B12 for pregnant vegan clients as it is usually enriched with this vitamin. The other options, while nutritious, are not reliable sources of B12 for vegans. Soybeans may not provide enough B12, algae contains B12 analogs that the human body cannot utilize, and the B12 content in sea vegetables can fluctuate, potentially not providing the necessary daily intake.

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