Nursing Elites

1. What is the term for the study of how diet affects gene expression?

• A. Epigenetics
• B. Nutrigenomics
• C. Genomics
• D. Genetics

Correct answer: B

Rationale: Nutrigenomics is the study of how diet affects gene expression, influencing health outcomes and disease risk. Epigenetics (choice A) involves changes in gene expression or cellular phenotype caused by mechanisms other than changes in the underlying DNA sequence. Genomics (choice C) is the study of an organism's entire genome. Genetics (choice D) is the study of heredity and the variation of inherited characteristics.

2. How should a healthcare professional address the concerns of parents about their child’s developmental delay?

• A. Recommend immediate diagnostic testing
• B. Suggest waiting for natural development
• C. Provide information about early intervention services
• D. Advise on increasing physical activity

Correct answer: C

Rationale: When addressing concerns about a child's developmental delay, providing information about early intervention services is crucial as it can facilitate timely support and resources. This option helps parents understand the available support systems and interventions for their child. Recommending immediate diagnostic testing may cause unnecessary anxiety without first exploring other supportive options. Suggesting waiting for natural development could result in missed opportunities for early intervention that are crucial for improving developmental outcomes. Advising on increasing physical activity is not directly related to addressing developmental delays and does not address the core issue of developmental delay.

3. Why must a child with acute laryngotracheobronchitis be kept NPO?

• A. The epinephrine administration may cause nausea and vomiting
• B. The child is being hydrated with IV fluids
• C. The child may not feel hungry
• D. Rapid respirations pose a risk for aspiration

Correct answer: D

Rationale: In acute laryngotracheobronchitis, rapid respirations increase the risk of aspiration due to compromised airway protection and potential for secretions to enter the lungs. Keeping the child NPO helps prevent the risk of aspiration pneumonia. Choice A is incorrect because epinephrine is not typically used for laryngotracheobronchitis. Choice B is incorrect as hydration with IV fluids does not eliminate the risk of aspiration. Choice C is also incorrect because the child being hungry is not the primary reason for keeping them NPO in this condition.

4. A weight reduction regimen calls for a daily intake of 1400 kilocalories, which includes 30 grams of fat. What percentage of the total energy is contributed by fat?

• A. 8.50%
• B. 15.00%
• C. 19.00%
• D. 25.50%

Correct answer: C

Rationale: To calculate the percentage of total energy contributed by fat, first determine the energy from fat by multiplying the fat amount (30g) by the energy density of fat (9 kcal/g), which equals 270 kcal. Then, divide the energy from fat (270 kcal) by the total energy intake (1400 kcal) and multiply by 100 to find the percentage: (270 kcal / 1400 kcal) * 100 = 19.29% ≈ 19.00%. Therefore, fat contributes approximately 19% of the total energy in the diet. Choice A (8.50%) is too low, while choices B (15.00%) and D (25.50%) are incorrect calculations based on the given information.

5. Which of the following statements about nutrition is true?

• A. Nutrition is the only factor that influences health.
• B. Nutrient needs are the same for everyone.
• C. Certain nutrients are more important than others.
• D. Nutrient recommendations are designed to meet the needs of most healthy people.

Correct answer: D

Rationale: The correct answer is D. Nutrient recommendations are designed to meet the needs of most healthy people, providing guidelines for a balanced diet. Choice A is incorrect because while nutrition plays a crucial role in health, it is not the only factor influencing it. Choice B is incorrect as nutrient needs vary based on factors like age, gender, activity level, and health status. Choice C is incorrect because all nutrients are essential for different bodily functions, and none can be deemed universally more important than others.

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