HESI LPN
HESI PN Nutrition Practice Exam
1. By chemical analysis, what nutrient is present in the highest amounts in most foods?
- A. fats
- B. water
- C. proteins
- D. carbohydrates
Correct answer: B
Rationale: The correct answer is B. Water is the most abundant nutrient in many foods. Water content varies across different foods, but in general, it is present in the highest amounts. Fats (Choice A) are essential but are not found in higher amounts compared to water. Proteins (Choice C) and carbohydrates (Choice D) are also important nutrients, but they are typically found in lower quantities in most foods compared to water.
2. What is an essential part of care for a child with asthma during an acute episode?
- A. Administer a bronchodilator
- B. Provide high doses of steroids
- C. Increase fluid intake
- D. Restrict all physical activity
Correct answer: A
Rationale: Administering a bronchodilator is an essential part of caring for a child with asthma during an acute episode because it helps to open airways and relieve acute asthma symptoms effectively. Providing high doses of steroids (Choice B) is typically done in severe cases or when other treatments fail. Increasing fluid intake (Choice C) can be beneficial to prevent dehydration, but it is not the primary intervention during an acute asthma episode. Restricting all physical activity (Choice D) is not recommended as some physical activity may help improve lung function and overall well-being.
3. Food energy is commonly expressed in kilocalories and in what other unit?
- A. kilojoules
- B. kilograms
- C. kilometers
- D. kilonewtons
Correct answer: A
Rationale: Food energy is commonly expressed in kilocalories and kilojoules. Kilocalories and kilojoules are both units of energy commonly used to measure the energy content of food. Kilograms, kilometers, and kilonewtons are units of mass, distance, and force, respectively, and are not used to express food energy.
4. How should hydration status be assessed in a child with vomiting and diarrhea?
- A. Check skin turgor and mucous membranes
- B. Measure blood glucose levels
- C. Assess heart rate and blood pressure
- D. Evaluate bowel sounds
Correct answer: A
Rationale: Checking skin turgor and mucous membranes is the appropriate method to assess hydration status in a child with vomiting and diarrhea. Skin turgor is an indicator of skin elasticity, which decreases when an individual is dehydrated. Mucous membranes, such as the inside of the mouth, can also show signs of dehydration like dryness. Measuring blood glucose levels (choice B) is not relevant to assessing hydration status in this scenario. Assessing heart rate and blood pressure (choice C) is important in evaluating the overall condition of a child but may not directly indicate hydration status. Evaluating bowel sounds (choice D) is more related to assessing gastrointestinal function rather than hydration status.
5. 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.
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