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. A nurse is instructing a group of clients regarding calcium-rich foods. Which of the following foods should the nurse include in the teaching as the best source of calcium?

• A. 1?2 cup ice cream
• B. 1 ounce Swiss cheese
• C. 1 cup milk
• D. 1 cup cottage cheese

Correct answer: D

Rationale: Cottage cheese is the best source of calcium among the options provided. It is rich in calcium and provides a significant amount per serving. 1 cup of cottage cheese contains more calcium compared to 1?2 cup of ice cream, 1 ounce of Swiss cheese, or 1 cup of milk. Ice cream is not a significant source of calcium and is often high in sugar and fat. Swiss cheese and milk contain calcium, but cottage cheese has a higher calcium content per serving, making it the best choice for meeting calcium needs.

3. Which enzyme is most essential for the digestion of triglycerides found in butterfat?

• A. Gastric lipase
• B. Pepsin
• C. Mucus
• D. Intrinsic factor

Correct answer: A

Rationale: The correct answer is A: Gastric lipase. Gastric lipase is crucial for the digestion of short- and medium-chain triglycerides, such as those found in butterfat. Pepsin is involved in protein digestion, not lipid digestion. Mucus acts as a protective barrier in the stomach and does not play a direct role in lipid digestion. Intrinsic factor is involved in the absorption of vitamin B12 and is not related to the digestion of triglycerides.

4. Which of the following treatments is not recommended for a child classified with no dehydration?

• A. Administering 1,000 ml to 1,400 ml within 4 hours
• B. Continuing feeding
• C. Allowing the child to take as much fluid as he wants
• D. Returning the child to the doctor if the condition worsens

Correct answer: B

Rationale: The correct answer is B. Continuing feeding is a recommended treatment for a child classified with no dehydration. This helps maintain the child's nutritional status and supports recovery. Options A, C, and D are appropriate interventions for a child with no dehydration. Option A ensures adequate fluid intake, option C promotes hydration, and option D ensures appropriate follow-up if the condition worsens.

5. Earliest sign of skin reaction to radiation therapy is:

• A. desquamation
• B. erythema
• C. atrophy
• D. pigmentation

Correct answer: D

Rationale: Understanding the underlying pathology and therapeutic techniques ensures that nursing care is not only reactive but also preventative, reducing the risk of complications.

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