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Nutrition Final Exam Quizlet
1. What is one major weakness of a laboratory-based study?
- A. The costs are typically prohibitive.
- B. Findings are difficult to replicate.
- C. Results from animal testing cannot be applied to human beings.
- D. Experimental variables cannot be easily controlled.
Correct answer: C
Rationale: One major weakness of laboratory-based studies is that results from animal testing cannot always be applied to human beings. This limitation arises due to the inherent biological differences between animals and humans, making the generalization of findings challenging. While costs may be a concern in some cases, they do not represent a universal weakness of laboratory-based studies. Findings in such studies can be replicated to ensure validity, and experimental variables can be effectively controlled in a laboratory setting. Choice C is the correct answer because the translatability of results from animal studies to humans is a significant challenge in laboratory-based research, impacting the direct application of findings to human health and well-being.
2. Before publication in a reputable journal, the findings of a research study must undergo scrutiny by experts in the field in a process known as what?
- A. peer review
- B. cohort review
- C. research intervention
- D. double-blind examination
Correct answer: A
Rationale: The correct answer is A: peer review. Before publication, research findings must undergo peer review, where experts in the field evaluate the validity and significance of the study. Choice B, cohort review, is incorrect as it does not involve the same level of evaluation by experts. Choice C, research intervention, is not a term used to describe the evaluation process before publication. Choice D, double-blind examination, refers to a study design where neither the participants nor the researchers know who is receiving a particular treatment, which is not the same as the peer review process.
3. What should be assessed in an infant diagnosed with hypertrophic pyloric stenosis?
- A. Diarrhea after each feeding
- B. Gastric pain and vigorous crying
- C. Poor appetite due to poor sucking reflex
- D. An olive-shaped mass right of the midline
Correct answer: D
Rationale: In hypertrophic pyloric stenosis, an olive-shaped mass can often be palpated in the infant's abdomen, which is a hallmark sign of this condition. This mass is located in the right upper quadrant of the abdomen, right of the midline. Choices A, B, and C are incorrect because while infants with hypertrophic pyloric stenosis may experience vomiting (not diarrhea), gastric pain, and irritability, and have feeding difficulties, the key assessment finding specific to this condition is the palpable olive-shaped mass in the abdomen.
4. Which lab result should be abnormal in a child with hemophilia?
- A. Prothrombin time
- B. Bleeding time
- C. Platelet count
- D. Partial thromboplastin time
Correct answer: D
Rationale: In a child with hemophilia, the lab result that should be abnormal is the partial thromboplastin time (PTT). Hemophilia is a disorder that affects the clotting factors in the intrinsic pathway of coagulation, leading to a prolonged PTT. Prothrombin time (Choice A) assesses the extrinsic pathway and should be normal in hemophilia. Bleeding time (Choice B) evaluates platelet function, which is typically normal in hemophilia. Platelet count (Choice C) measures the number of platelets and is not directly affected by hemophilia.
5. How should a healthcare provider approach the care of a child with juvenile idiopathic arthritis (JIA)?
- A. Promote weight maintenance
- B. Encourage joint mobility exercises
- C. Avoid physical inactivity
- D. Ensure a balanced diet
Correct answer: B
Rationale: Encouraging joint mobility exercises is the appropriate approach to caring for a child with juvenile idiopathic arthritis (JIA). These exercises help maintain joint function and reduce stiffness, which are crucial in managing the condition. Choices A, C, and D are incorrect. Promoting weight maintenance is more relevant than weight gain as maintaining a healthy weight is important in managing JIA. Avoiding physical inactivity is not recommended as controlled and appropriate physical activities can help improve joint flexibility and overall health. Ensuring a balanced diet, which includes adequate protein, is important for overall nutrition but is not a specific intervention for managing JIA.
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