Nursing Elites

1. 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.

2. What is the main purpose of the initial assessment of a child with a suspected fracture?

• A. To determine the type of fracture
• B. To check for potential complications
• C. To identify the cause of the injury
• D. To plan for long-term rehabilitation

Correct answer: B

Rationale: The main purpose of the initial assessment of a child with a suspected fracture is to check for potential complications, such as neurovascular impairment, and to ensure appropriate treatment. Choice A is incorrect because determining the type of fracture usually requires imaging studies like X-rays, which may not be part of the initial assessment. Choice C is incorrect because identifying the cause of the injury is important for the history-taking part but may not be the main purpose of the initial assessment. Choice D is incorrect because long-term rehabilitation planning typically occurs after the acute phase of fracture management.

3. What is the smallest amount of a nutrient that, when consumed over a prolonged period, maintains a specific function?

• A. nutrient allowance
• B. nutrient requirement
• C. nutrient tolerable limit
• D. nutrient adequate intake

Correct answer: B

Rationale: The correct answer is 'B: nutrient requirement.' The nutrient requirement refers to the smallest amount of a nutrient that, when consumed over a prolonged period, maintains a specific function in the body. This amount ensures the body's optimal functioning and health. Choice A, 'nutrient allowance,' is incorrect as it does not specifically refer to the minimum amount needed for bodily functions but rather suggests a broader term. Choice C, 'nutrient tolerable limit,' is incorrect as it pertains to the maximum amount of a nutrient that can be consumed without adverse effects. Choice D, 'nutrient adequate intake,' is incorrect as it refers to the recommended average daily intake level of a nutrient to meet the requirements of most healthy individuals.

4. 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.

5. What does a positive correlation between two variables indicate?

• A. One variable causes the other.
• B. Both variables move in the same direction.
• C. Both variables move in opposite directions.
• D. There is no relationship between the variables.

Correct answer: B

Rationale: A positive correlation between two variables indicates that they move in the same direction. This means that as one variable increases (or decreases), the other variable also increases (or decreases). Choice A is incorrect because correlation does not imply causation; it only shows a relationship between variables. Choice C is incorrect as it describes a negative correlation where variables move in opposite directions. Choice D is incorrect as a positive correlation implies a relationship between the variables.

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