Nursing Elites

1. Which physiologic role does vitamin C play in the body?

• A. Transcribing DNA to RNA
• B. Absorption and regulation of calcium
• C. Protects integrity of cellular membranes
• D. Catalyst for synthesis of blood-clotting factors

Correct answer: C

Rationale: Vitamin C plays a crucial role in protecting the integrity of cellular membranes. It is essential for collagen synthesis, which is important for wound healing and maintaining skin, blood vessels, and other tissues. Choice A is incorrect as the transcription of DNA to RNA is facilitated by vitamin A. Choice B is incorrect as calcium absorption and regulation are functions of vitamin D. Choice D is incorrect as vitamin K serves as a catalyst for the synthesis of blood-clotting factors, not vitamin C.

2. Which breakfast items indicate an understanding of foods high in antioxidants A and C?

• A. Fried eggs, sausage, and whole wheat toast
• B. Oatmeal with blueberries and coffee
• C. Cereal with strawberries and low-fat milk
• D. Hard-boiled eggs, cantaloupe, and orange juice

Correct answer: D

Rationale: The correct answer is D: Hard-boiled eggs, cantaloupe, and orange juice. Cantaloupe and orange juice are rich in vitamins A and C, which are known for their antioxidant properties. Choice A is incorrect because fried eggs, sausage, and whole wheat toast do not contain high levels of antioxidants A and C. Choice B is incorrect because, while blueberries are high in antioxidants, coffee does not provide significant amounts of vitamins A and C. Choice C is incorrect because, although strawberries are a good source of vitamin C, low-fat milk does not contribute significantly to vitamins A and C.

3. The nurse is caring for an infant whose parent reports the infant takes a bottle to go to sleep. What should the nurse instruct to prevent baby bottle tooth decay?

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

Correct answer: A

Rationale: The correct answer is A, Water. Water is recommended to prevent baby bottle tooth decay caused by sugary substances present in milk, formula, or fruit juice. Water does not contain sugars that can contribute to tooth decay, unlike the other options. Milk, formula, and unsweetened fruit juice can all lead to tooth decay if the baby falls asleep with them in their mouth, as the sugars can linger on the teeth and cause decay over time. Iron-fortified formula, although beneficial for the infant's nutrition, still contains sugars that can be harmful to the teeth.

4. In approximately what percentage of cases is the prevalence seen?

• A. Type 1 Diabetes
• B. Type 2 Diabetes
• C. N/A
• D. N/A

Correct answer: A

Rationale: The correct answer is A, Type 1 Diabetes. The prevalence of Type 1 Diabetes is seen in approximately 5% to 10% of cases. This statement highlights a key epidemiological characteristic of Type 1 Diabetes. Choice B, Type 2 Diabetes, is incorrect because the prevalence mentioned does not align with Type 2 Diabetes, which has a much higher prevalence in the general population. Choices C and D are not relevant to the question and can be disregarded.

5. Wernicke-Korsakoff syndrome is associated with which vitamin deficiency?

• A. Thiamine (B1)
• B. Riboflavin (B2)
• C. Niacin (B3)
• D. Pyridoxine (B6)

Correct answer: A

Rationale: Wernicke-Korsakoff syndrome is indeed associated with thiamine (vitamin B1) deficiency. This syndrome is commonly seen in individuals with chronic alcoholism due to poor diet and impaired thiamine absorption. Thiamine is essential for normal brain function and energy metabolism. Riboflavin (B2) deficiency can lead to symptoms like sore throat and swollen mucous membranes, not Wernicke-Korsakoff syndrome. Niacin (B3) deficiency causes pellagra, characterized by dermatitis, diarrhea, dementia, and death, but not Wernicke-Korsakoff syndrome. Pyridoxine (B6) deficiency can result in dermatitis, glossitis, and peripheral neuropathy, but it is not associated with Wernicke-Korsakoff syndrome.

Similar Questions