each is a function of vitamin a except one which is the exception
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Nursing Elites

ATI RN

ATI Nutrition Proctored Exam

1. Each of the following is a function of vitamin A, except one. Which is the exception?

Correct answer: C

Rationale: The correct answer is C. Maintenance of more than 200 genes is not a function of vitamin A; instead, it is a function of Vitamin D. Vitamin A plays a crucial role in the prevention of night blindness by aiding in the production of the visual pigment rhodopsin. It also supports the growth of soft tissues and bone, as well as the integrity of body openings and their linings. Choice C is incorrect because the maintenance of genes is primarily associated with Vitamin D, not Vitamin A.

2. A healthcare professional is teaching about implementing a heart-healthy diet to a client who has coronary artery disease. Which of the following foods should the professional recommend to the client?

Correct answer: C

Rationale: Broiled salmon is a heart-healthy food due to its high omega-3 fatty acid content, which helps reduce inflammation and improve cardiovascular health. Choices A, B, and D are not recommended for a heart-healthy diet. Baked ham and processed cheese are high in saturated fats and sodium, which can be detrimental to cardiovascular health. Canned potato soup may contain high levels of sodium and preservatives, making it less suitable for a heart-healthy diet.

3. Which vitamin's recommended dietary allowance (RDA) is significantly increased during pregnancy?

Correct answer: A

Rationale: The correct answer is A: Folate. During pregnancy, the recommended dietary allowance (RDA) for folate is significantly increased to support fetal development and prevent neural tube defects and other congenital anomalies. Folate plays a crucial role in DNA synthesis and cell growth, making it essential for the rapidly dividing cells of the developing fetus. Thiamine (B1), Riboflavin (B2), and Niacin (B3) are important vitamins, but their RDAs do not undergo as significant an increase during pregnancy as folate's RDA does.

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

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.

5. A nurse is caring for four clients. The nurse should plan to administer total parenteral nutrition for which of the following clients?

Correct answer: D

Rationale: Total parenteral nutrition (TPN) is essential for clients undergoing significant surgical procedures like a hemicolectomy to ensure they receive adequate nutrition when oral intake is not possible. Choices A, B, and C do not typically require TPN. Choice A is managing postoperative pain with IV PCA, choice B is likely to need alternative feeding methods due to dysphagia, and choice C is going home with oxygen for COPD management, which does not directly relate to the need for TPN.

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