which physiologic role does vitamin c play in the body
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Nursing Elites

ATI RN

ATI Nutrition Proctored Exam

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

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 dietary modification is most suitable for a client with type 2 diabetes who wants to improve glycemic control?

Correct answer: B

Rationale: Decreasing the intake of refined carbohydrates is the most effective dietary modification for a client with type 2 diabetes who aims to improve their glycemic control. Refined carbohydrates can cause sudden spikes in blood sugar levels, making diabetes management more difficult. Increasing the intake of saturated fats (Choice A) is not advisable as it can negatively impact heart health. Completely avoiding all fruits (Choice C) is unnecessary because most fruits have a low glycemic index and provide essential nutrients. Increasing the intake of sugary snacks (Choice D) will deteriorate glycemic control due to their high sugar content.

3. A patient with an ileostomy is suffering from frequent diarrhea. The clinician should advise the patient to increase his intake of what food to thicken stool output?

Correct answer: C

Rationale: Potatoes are starchy and can help thicken stool output, making them beneficial for patients with an ileostomy experiencing diarrhea.

4. In monitoring the patient in PACU, the nurse correctly identifies that checking the patient's vital signs is done every:

Correct answer: A

Rationale: Correct Answer: A - Vital signs monitoring in the PACU (Post-Anesthesia Care Unit) is typically done every hour to closely monitor the patient's condition during the immediate postoperative period. This frequency allows the nurse to promptly identify any changes in the patient's vital signs and intervene as necessary. Choice B (5 minutes) is too frequent for routine vital signs monitoring in the PACU and may not allow for a comprehensive assessment of the patient's stability. Choice C (15 minutes) and Choice D (30 minutes) are also not in line with the standard practice of vital signs monitoring in the PACU, which is typically hourly.

5. Because of increasing cases of fluorosis, low levels of fluoride are added to commercial infant formula. Breast milk provides low levels of fluoride.

Correct answer: D

Rationale: The first statement is false; fluoride is not added to infant formulas due to the risk of fluorosis. The second statement is true; breast milk contains low levels of fluoride.

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