Nursing Elites

1. What is the most critical physiologic change required of newborns at birth?

• A. Transition from fetal to neonatal breathing
• B. Body temperature maintenance
• C. Stabilization of fluid and electrolytes
• D. Closure of fetal shunts in the heart

Correct answer: A

Rationale: The correct answer is A: Transition from fetal to neonatal breathing. The onset of breathing is the most immediate and critical physiologic change required for the transition to extrauterine life. Factors that interfere with this normal transition increase fetal asphyxia, which is a condition of hypoxemia, hypercapnia, and acidosis. While body temperature maintenance, stabilization of fluid and electrolytes, and closure of fetal shunts in the heart are crucial changes in the transition to extrauterine life, breathing and the exchange of oxygen for carbon dioxide must take precedence as they are essential for newborn survival.

2. What dietary modification is recommended for a child with cystic fibrosis?

• A. High carbohydrate
• B. Low protein
• C. High calorie
• D. Low fat

Correct answer: C

Rationale: A high-calorie diet is recommended for children with cystic fibrosis due to their increased energy needs and malabsorption issues. Cystic fibrosis affects the pancreas, leading to poor digestion and absorption of nutrients, particularly fats, which requires dietary adjustments to maintain adequate nutrition. High carbohydrate (Choice A) is not the primary focus; the emphasis is on overall calorie intake. Low protein (Choice B) is not recommended as protein intake is essential for growth and development. Low fat (Choice D) is not the best option as fat-soluble vitamin absorption is already compromised in cystic fibrosis, hence fat restriction is not a priority.

3. A young mother asks if her 9-month-old can begin drinking cow’s milk instead of formula. You explain that:

• A. Cow’s milk is easier to digest than formula
• B. Breast milk or formula should be used for now because whole cow’s milk is not recommended for infants under 1 year
• C. As long as whole milk is given and not skim milk, it is okay
• D. Cow’s milk will decrease the chance of iron deficiency anemia

Correct answer: B

Rationale: Breast milk or formula should be used for now because whole cow’s milk is not recommended for infants under 1 year. Cow’s milk is not suitable for infants under 1 year of age as it lacks essential nutrients like iron and can lead to iron deficiency. Therefore, it is important to continue with breast milk or formula to ensure the baby's nutritional needs are met. Choice A is incorrect as cow’s milk is not easier to digest than formula for infants. Choice C is incorrect as the type of milk, whether whole or skim, is not the primary concern at this age. Choice D is incorrect as cow’s milk can actually increase the risk of iron deficiency anemia in infants.

4. Why are neonates predisposed to problems with thermoregulation?

• A. Renal function is not fully developed.
• B. Flexed posture favors heat loss.
• C. A large body surface area favors heat loss to the environment.
• D. A thick layer of subcutaneous fat provides excellent insulation.

Correct answer: C

Rationale: Neonates have a large surface area relative to their weight, which makes them prone to heat loss to the environment, leading to thermoregulation issues. The underdeveloped kidney affecting urine concentration (Choice A) is unrelated to the thermal regulation process. While a flexed posture can help retain heat (Choice B), it does not outweigh the impact of the large body surface area in neonates. Although subcutaneous fat (Choice D) provides insulation, in neonates, the large body surface area is more significant in contributing to heat loss than the fat's insulating properties.

5. The predominant characteristic of the intellectual development of a child aged 2 to 7 years is egocentricity. Which of the following best describes this concept?

• A. Selfishness
• B. Unable to see another’s point of view
• C. Able to put self in another’s place
• D. Prefers to play alone

Correct answer: B

Rationale: Egocentricity in children aged 2 to 7 years means they are unable to see things from another person's perspective. This characteristic is a normal part of their cognitive development during this stage. Choice A, 'Selfishness,' is not an accurate description as egocentricity is more about a limited ability to understand others' viewpoints rather than intentional selfishness. Choice C, 'Able to put self in another’s place,' is incorrect as egocentric children struggle to do this. Choice D, 'Prefers to play alone,' is not directly related to egocentricity but may be a behavior exhibited by some children for various reasons.

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