Nursing Elites

1. An infant, age 5 months, is brought to the clinic by his parents for a well-baby checkup. What is the best advice that the nurse should include at this time about injury prevention?

• A. Keep buttons, beads, and other small objects out of his reach.
• B. Do not permit him to chew paint from window ledges because he might absorb too much lead.
• C. When he learns to roll over, you must supervise him whenever he is on a surface from which he might fall.
• D. Lock the crib sides securely because he may stand and lean against them and fall out of bed.

Correct answer: A

Rationale: Small objects are a choking hazard for infants, so it is crucial to keep them out of reach to prevent injury.

2. 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.

3. The nurse is testing an infant's visual acuity. By which age should the infant be able to fix on and follow a target?

• A. 1 month
• B. 1 to 2 months
• C. 3 to 4 months
• D. 6 months

Correct answer: C

Rationale: By 3 to 4 months of age, an infant should be able to fix on and follow a target, indicating proper visual development.

4. What physiologic state(s) produces the clinical manifestations of nervous system stimulation and excitement, such as overexcitability, nervousness, and tetany?

• A. Metabolic acidosis
• B. Respiratory alkalosis
• C. Metabolic and respiratory acidosis
• D. Metabolic and respiratory alkalosis

Correct answer: D

Rationale: Both metabolic and respiratory alkalosis can cause overexcitability and nervous system stimulation due to a decrease in ionized calcium levels, which can cause symptoms such as tetany and paresthesias. Acidosis typically has the opposite effect, leading to depression of the nervous system.

5. When taking a child’s blood pressure, what percentage of the upper arm should the nurse ensure the cuff bladder width covers?

• A. 20%
• B. 40%
• C. 60%
• D. 80%

Correct answer: B

Rationale: When taking a child's blood pressure, the nurse should select a cuff with a bladder width that covers 40% of the arm circumference at the midpoint of the upper arm. This ensures accurate readings. Choosing a cuff that covers less or more than 40% can lead to incorrect blood pressure measurements. Therefore, options A, C, and D are incorrect.

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