Nursing Elites

1. Which laboratory test would be most important for the nurse to assess when caring for a toddler suspected of having cystic fibrosis?

• A. Liver enzymes
• B. Serum calcium
• C. Sweat chloride test
• D. Urine creatinine

Correct answer: C

Rationale: The sweat chloride test is the primary diagnostic test for cystic fibrosis. Cystic fibrosis is characterized by abnormal transport of chloride and sodium across epithelial cell membranes, leading to increased chloride in sweat. This test is crucial for diagnosing cystic fibrosis in suspected cases. Liver enzymes (Choice A), serum calcium (Choice B), and urine creatinine (Choice D) are not specific tests for cystic fibrosis and would not provide the necessary information for diagnosis in this case.

2. What changes could the school nurse implement at the school to help reduce students’ risk for developing type 2 diabetes?

• A. Increase the amount of daily physical activity.
• B. Decrease the amount of daily physical activity.
• C. Test each child’s urine monthly.
• D. Teach parents to avoid administering aspirin to their child.

Correct answer: A

Rationale: Increasing physical activity helps improve insulin sensitivity and can prevent or delay the onset of type 2 diabetes in children. Regular physical activity is a key component in managing weight and reducing the risk of chronic diseases. Decreasing physical activity (Choice B) would not be beneficial in reducing the risk of type 2 diabetes. Testing each child’s urine monthly (Choice C) is not directly related to preventing type 2 diabetes. Teaching parents to avoid administering aspirin to their child (Choice D) is important for Reye's syndrome prevention but not directly related to reducing the risk of type 2 diabetes.

3. The nurse is caring for a child with hypernatremia. The nurse evaluates the child for which signs and symptoms of hypernatremia? (Select all that apply.)

• A. All below
• B. Lethargy
• C. Oliguria
• D. Intense thirst

Correct answer: A

Rationale: Hypernatremia typically presents with lethargy, oliguria, and intense thirst due to the body's attempt to conserve water. Apathy can also occur, but lethargy and thirst are more consistent indicators.

4. What factor predisposes an infant to fluid imbalances?

• A. Decreased surface area
• B. Lower metabolic rate
• C. Immature kidney functioning
• D. Decreased daily exchange of extracellular fluid

Correct answer: C

Rationale: Infants have immature kidneys that are less efficient at concentrating urine, making them more susceptible to fluid imbalances. Their higher surface area to volume ratio also contributes to greater insensible fluid losses.

5. The parent of a 2-week-old infant asks the nurse if fluoride supplements are necessary because the infant is exclusively breastfed. What is the nurse's best response?

• A. The infant needs to begin taking them now.
• B. Supplements are not needed if you drink fluoridated water.
• C. The infant may need to begin taking them at age 6 months.
• D. The infant can have infant cereal mixed with fluoridated water instead of supplements.

Correct answer: C

Rationale: Breastfed infants may need fluoride supplements starting at 6 months if they are not receiving fluoride from other sources, such as drinking water.

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