an estimated percent of persons in the united states who have hiv infection are unaware that they are infected

ATI RN

ATI Nutrition Proctored

1. An estimated _____ percent of persons in the United States who have HIV infection are unaware that they are infected.

A. 4%
B. 21%
C. 34%
D. 49%

Correct answer: B

Rationale: The correct answer is B: '21%'. Approximately 21% of persons in the United States who have HIV infection are unaware that they are infected. This percentage represents a significant portion of individuals who are not aware of their HIV status, highlighting the importance of increased testing and awareness campaigns. Choices A, C, and D are incorrect as they do not align with the estimated percentage provided in the context.

2. What differentiates one amino acid from another?

A. The amine group
B. The acid group
C. The side chain
D. None of the above

Correct answer: C

Rationale: The side chain, also known as the R group, is what differentiates one amino acid from another. It imparts unique properties to each amino acid, thereby influencing their roles and functions in proteins. The amine group (Choice A) and the acid group (Choice B) are components of all amino acids and do not cause the differences among various amino acids. Choice D is incorrect as it suggests that none of the given options account for the differences, which is not true as the side chain does.

3. What describes a criterion used to diagnose diabetes?

A. a plasma glucose concentration of 100 mg/dL or higher after a fast of at least 12 hours
B. a casual blood sample of 200 mg/dL or higher in a person with classic symptoms
C. a plasma glucose concentration measured two hours after a 200-gram glucose load is 400 mg/dL or higher
D. a HbA1C higher than 5 percent

Correct answer: B

Rationale: A casual blood sample of 200 mg/dL or higher in a person with classic symptoms is a diagnostic criterion for diabetes. This choice aligns with the typical clinical presentation of diabetes and is a key diagnostic indicator. Choices A, C, and D do not accurately reflect the established criteria for diagnosing diabetes, making them incorrect. Choice A pertains to a fasting plasma glucose level, Choice C involves a glucose challenge test, and Choice D refers to HbA1C levels, which are used for monitoring blood sugar control over time, not for diagnosing diabetes.

4. Lynn is an older adult who lives alone and has requested advice on how to eat a nutritious diet as cheaply as possible. One useful, practical tip for Lynn might be to _____.

A. buy just a few pieces of fresh fruit at a time, in different stages of ripeness
B. choose small boxes of frozen vegetables instead of large bags
C. purchase pre-sliced or shredded cheese rather than whole pieces
D. avoid buying certain foods in bulk, such as beans or dried legumes

Correct answer: A

Rationale: Buying a few pieces of fresh fruit at different stages of ripeness ensures that Lynn will have ripe fruit available over several days, reducing waste and cost. Choice B focuses on frozen vegetables but doesn't address the variety and ripeness factor like Choice A. Choice C is about cheese, which may not be as essential for a nutritious diet compared to fresh fruit. Choice D suggests avoiding certain foods in bulk, which might not be as relevant for maintaining a nutritious diet economically as the strategy in Choice A.

5. A nurse is providing teaching about formula feeding to the parents of an infant. Which of the following instructions should the nurse include?

A. Formula that remains in the bottle should not be used for one more feeding.
B. Formula should be changed to whole milk when the infant is 12 months old.
C. If the infant is gaining weight too rapidly, do not dilute the formula.
D. If the infant turns away after taking most of the feeding, stop the feeding.

Correct answer: D

Rationale: If the infant turns away after taking most of the feeding, it indicates they are full, and continuing to feed may lead to overfeeding. Choice A is incorrect because it is not safe to use formula that remains in the bottle for another feeding due to the risk of bacterial contamination. Choice B is incorrect as whole milk should be introduced after the infant is 12 months old, not 9 months old. Choice C is incorrect as diluting formula can compromise the infant's nutrition and should not be done without healthcare provider guidance.