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 primary goal in managing a child with cystic fibrosis?

• A. Increase dietary fat intake
• B. Prevent lung infections
• C. Increase physical activity
• D. Ensure high protein intake

Correct answer: B

Rationale: The primary goal in managing a child with cystic fibrosis is to prevent lung infections. Cystic fibrosis primarily affects the respiratory system, leading to thick mucus buildup in the lungs, which increases the risk of infections. Preventing lung infections through proper respiratory care, medications, airway clearance techniques, and vaccinations is crucial in managing cystic fibrosis. While dietary interventions like increasing dietary fat intake, ensuring high protein intake, and promoting physical activity are also important aspects of cystic fibrosis management, preventing lung infections takes precedence as it directly addresses a major complication of the condition.

3. What is an important aspect of managing a child with asthma in a school setting?

• A. Limiting physical activity
• B. Ensuring access to emergency medications
• C. Reducing the number of classes attended
• D. Avoiding interaction with other students

Correct answer: B

Rationale: The correct answer is B: Ensuring access to emergency medications. In a school setting, it is crucial to have emergency medications available for a child with asthma in case of an asthma attack. This helps in managing asthma effectively and promptly. Choices A, C, and D are incorrect because limiting physical activity, reducing the number of classes attended, and avoiding interaction with other students are not recommended strategies for managing asthma in a school setting. Encouraging physical activity, ensuring regular attendance, and promoting social interactions are important for the overall well-being of a child with asthma.

4. What is one benefit of using a large sample size in an experiment?

• A. Chance variation is less likely to affect the results.
• B. The possibility of a placebo effect is eliminated.
• C. The experiment will be double-blind.
• D. The control group will be similar to the experimental group.

Correct answer: A

Rationale: Corrected Rationale: Using a large sample size reduces the likelihood of chance variation affecting the results, providing more reliable data. Choice B is incorrect because the placebo effect is related to participants' beliefs, not sample size. Choice C is incorrect as double-blind refers to a method of reducing bias, not directly related to sample size. Choice D is incorrect because the similarity between the control and experimental groups is not solely dependent on sample size.

5. In what position should infants be placed to sleep to reduce the risk of sudden infant death syndrome (SIDS)?

• A. Right side-lying
• B. Left side-lying
• C. Prone
• D. Supine

Correct answer: D

Rationale: The American Academy of Pediatrics recommends placing infants on their backs (supine) to sleep to reduce the risk of sudden infant death syndrome (SIDS). This position has been shown to decrease the likelihood of SIDS occurrence. Placing infants on their right or left side (choices A and B) or prone (choice C) can increase the risk of SIDS as it may obstruct the infant's airway or lead to overheating, which are known risk factors for SIDS.

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