HESI LPN
Nutrition Final Exam
1. What is an important nursing intervention for a child with a newly inserted central venous catheter?
- A. Regularly monitor for signs of infection
- B. Administer intravenous fluids only as ordered
- C. Restrict the child's movement
- D. Perform daily dressing changes only
Correct answer: A
Rationale: Regularly monitoring for signs of infection is a critical nursing intervention for a child with a newly inserted central venous catheter. This intervention is essential to detect any early signs of infection, such as redness, swelling, or drainage at the catheter site, which can lead to serious complications like sepsis. Administering intravenous fluids as ordered is important but not the most crucial intervention for a newly inserted central venous catheter. Restricting the child's movement is unnecessary unless specified by the healthcare provider. Performing daily dressing changes alone is not sufficient to ensure the catheter's integrity and the child's safety; monitoring for signs of infection is key.
2. Why is peer review important in scientific research?
- A. To expedite publication of results.
- B. To facilitate the replication of studies.
- C. To verify the accuracy and validity of research findings.
- D. To enhance the credibility of the research.
Correct answer: C
Rationale: Peer review is crucial in scientific research to verify the accuracy and validity of research findings. By subjecting research papers to evaluation by experts in the field, peer review ensures that the study's methods, results, and conclusions are robust and reliable. This process helps to maintain high standards of quality in scientific publications, providing credibility to the research. Choices A and D are incorrect because the primary purpose of peer review is not to expedite publication or solely enhance credibility; its core function is to validate the research's accuracy and validity. Choice B, while beneficial, is not the primary reason for peer review; replication is a byproduct of the rigorous evaluation of research methods and findings.
3. What should be included in the medical management of a sickle cell crisis?
- A. Information for parents on home care
- B. Adequate hydration and pain management
- C. Pain management and iron supplements
- D. Adequate oxygenation and factor VIII
Correct answer: B
Rationale: The correct answer is B: Adequate hydration and pain management. During a sickle cell crisis, it is essential to provide hydration to prevent vaso-occlusive events and manage pain effectively with analgesics. Adequate hydration helps maintain blood flow and prevent further sickling of red blood cells. Pain management is crucial to alleviate the severe pain associated with sickle cell crises. Options A, C, and D are incorrect. Providing information for parents on home care (Option A) may be important for ongoing management but is not specific to an acute crisis. Iron supplements (Option C) are not typically indicated during a sickle cell crisis. Adequate oxygenation and factor VIII (Option D) are not primary interventions for managing a sickle cell crisis; instead, oxygen therapy may be considered in severe cases, and factor VIII is not a standard treatment for sickle cell disease.
4. In the scientific method, a tentative solution to a problem is called a what?
- A. theory
- B. prediction
- C. hypothesis
- D. correlation
Correct answer: C
Rationale: In the scientific method, a hypothesis is a tentative solution or educated guess that is tested through research. A theory (choice A) is a well-substantiated explanation based on evidence and extensive testing. A prediction (choice B) is a statement about what will happen in the future based on existing knowledge. Correlation (choice D) refers to a mutual relationship between two or more things, indicating how they may change together but not providing a solution to a problem.
5. Which statement best describes the relationship between diet and chronic diseases?
- A. Diet has no impact on chronic diseases.
- B. A poor diet can increase the risk of developing chronic diseases.
- C. Diet is the sole cause of chronic diseases.
- D. A balanced diet can help prevent or manage chronic diseases.
Correct answer: B
Rationale: Choice B is the correct answer. A poor diet can increase the risk of developing chronic diseases due to the lack of essential nutrients or the presence of harmful components like excessive sugar, salt, or saturated fats. While diet plays a significant role in the development of chronic diseases, it is not the sole cause (choice C). Choice A is incorrect because diet does indeed have a significant impact on chronic diseases. Choice D is not the best answer as it does not acknowledge the negative impact of a poor diet on chronic diseases.
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