Nursing Elites

1. You have been asked to help a top nutrition researcher conduct human experiments on vitamin C. As the subjects walk into the laboratory, you distribute all the vitamin C pill bottles to the girls and all the placebo pill bottles to the boys. What should you have done?

• A. Giving all the boys the vitamin C and the girls the placebo, and telling them what they were getting.
• B. Distributing the bottles randomly, randomizing the subjects, and telling them what they were getting.
• C. Telling the subjects which group they were in, but preventing yourself from knowing the contents of the pill bottles.
• D. Preventing yourself from knowing what is in the pill bottles, and distributing the bottles randomly to the subjects.

Correct answer: D

Rationale: The correct approach in a scientific experiment is to prevent yourself from knowing the contents of the pill bottles and distribute them randomly to the subjects. This randomization helps to avoid bias and ensures that the results are not influenced by preconceived notions. Option A is incorrect because it introduces gender bias by assigning pills based on gender. Option B is incorrect as it mentions telling the subjects what they are getting, which could lead to placebo effects. Option C is incorrect as it suggests disclosing group information to the subjects, which can also introduce bias.

2. The parents of a child with sickle cell anemia ask why their child experiences pain. What is the most likely cause?

• A. Inflammation of the vessels
• B. Obstructed blood flow
• C. Overhydration
• D. Stress-related headaches

Correct answer: B

Rationale: In sickle cell anemia, pain is primarily caused by the obstruction of blood flow by sickle-shaped cells. This obstruction leads to inadequate oxygen supply to tissues, resulting in tissue damage and pain. Choice A, inflammation of the vessels, is incorrect as it is not the primary cause of pain in sickle cell anemia. Choice C, overhydration, is unrelated to the pathophysiology of sickle cell anemia and would not lead to the characteristic pain experienced. Choice D, stress-related headaches, is also unrelated to the underlying mechanisms of pain in sickle cell anemia.

3. What is a common complication of untreated asthma in children?

• A. Delayed puberty
• B. Growth retardation
• C. Chronic sinusitis
• D. Frequent headaches

Correct answer: C

Rationale: The correct answer is C: Chronic sinusitis. Untreated asthma can lead to chronic sinusitis in children due to prolonged inflammation and infection of the respiratory tract. Choices A, B, and D are incorrect. Delayed puberty and growth retardation are not common complications of untreated asthma in children. Frequent headaches may be associated with asthma exacerbations but are not typical long-term complications.

4. What is an important aspect of managing a child with chronic kidney disease?

• A. Monitoring electrolyte levels
• B. Increasing protein intake
• C. Limiting fluid intake
• D. Encouraging a high-fat diet

Correct answer: A

Rationale: Monitoring electrolyte levels is crucial in managing chronic kidney disease in children because imbalances can lead to serious complications. Electrolyte levels must be carefully monitored to prevent issues such as electrolyte abnormalities, which can further impact kidney function and overall health. Choices B, C, and D are incorrect because increasing protein intake, limiting fluid intake, and encouraging a high-fat diet can exacerbate kidney disease in children by putting extra strain on their kidneys or causing other health problems.

5. Why is randomization important in a scientific experiment?

• A. To minimize the impact of confounding variables.
• B. To eliminate bias in the assignment of subjects to groups.
• C. To contribute to the accuracy and validity of the experiment's results.
• D. To prevent systematic differences between groups.

Correct answer: B

Rationale: Randomization is crucial in a scientific experiment to eliminate bias in the assignment of subjects to groups. By randomly assigning subjects, it helps ensure that any differences observed in the outcomes are due to the experimental treatment and not to preexisting differences between groups. Choice A is incorrect because randomization does not guarantee representativeness but rather minimizes the impact of confounding variables. Choice C is not entirely accurate; while randomization can contribute to accuracy and validity, its primary purpose is to reduce bias. Choice D is incorrect as the goal of randomization is not to balance the number of subjects but to prevent systematic differences between groups.

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