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. Which of the following is a common complication of an untreated inguinal hernia in children?

• A. Gastroenteritis
• B. Strangulation of the hernia
• C. Chronic cough
• D. Epistaxis

Correct answer: B

Rationale: The correct answer is B: Strangulation of the hernia. Untreated inguinal hernias in children can lead to strangulation, which can result in bowel obstruction and ischemia. This is a serious complication that requires prompt medical attention. Choices A, C, and D are incorrect. Gastroenteritis is a gastrointestinal infection that is not directly related to untreated inguinal hernias. Chronic cough is not typically associated with this condition. Epistaxis refers to nosebleeds, which are not a common complication of untreated inguinal hernias in children.

4. How should one manage a child with an allergy to multiple food items?

• A. Avoid all identified allergens
• B. Increase dietary exposure to allergens
• C. Administer daily antihistamines
• D. Restrict all food intake

Correct answer: A

Rationale: When managing a child with an allergy to multiple food items, the most appropriate approach is to avoid all identified allergens. This is crucial to prevent allergic reactions and ensure the child's safety. Choice B, increasing dietary exposure to allergens, is incorrect as it can lead to severe allergic reactions. Choice C, administering daily antihistamines, may help manage symptoms but does not address the root cause, which is avoiding allergens. Choice D, restricting all food intake, is not a viable option as it can lead to malnutrition and other health issues.

5. When an increase in exercise is accompanied by a decrease in body weight, it is an example of what?

• A. variable effect
• B. positive correlation
• C. negative correlation
• D. randomization effect

Correct answer: C

Rationale: When an increase in exercise is accompanied by a decrease in body weight, it demonstrates a negative correlation. This means that as one variable (exercise) increases, the other variable (body weight) decreases. Choice A, 'variable effect,' is vague and does not accurately describe the relationship between exercise and body weight. Choice B, 'positive correlation,' is incorrect because in a positive correlation, both variables would increase or decrease together. Choice D, 'randomization effect,' is unrelated to the scenario described.

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