Nursing Elites

1. 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.

2. Play activities of the preschool-age child include:

• A. Having imaginary playmates
• B. Selective collection of objects
• C. Complex board games
• D. Associative play

Correct answer: A

Rationale: The correct answer is A, 'Having imaginary playmates.' Preschool-age children often engage in imaginative play, which includes creating imaginary friends or playmates. This type of play helps them develop creativity, social skills, and emotional expression. Choice B, 'Selective collection of objects,' may be more common in older children and is not a typical play activity for preschoolers. Choice C, 'Complex board games,' are usually beyond the developmental level of preschoolers as they require more advanced cognitive skills. Choice D, 'Associative play,' is a term used to describe a type of play where children play alongside each other but not necessarily together, which is different from the imaginative play involving imaginary playmates that preschoolers often engage in.

3. A four-year-old boy is admitted to the hospital with leg pain and fever. He is pale-looking and has bruises over various areas of his body. The physician suspects acute lymphoblastic leukemia (ALL). Which test would be used to confirm the diagnosis?

• A. Bone marrow aspirate
• B. Red blood cell count
• C. Lumbar puncture
• D. Bone scan

Correct answer: A

Rationale: A bone marrow aspirate is the definitive test to confirm acute lymphoblastic leukemia (ALL) in this case. It allows for the examination of leukemic cells in the bone marrow, providing a direct assessment of the disease. Red blood cell count (Choice B) is not specific for diagnosing leukemia but may show anemia commonly seen in leukemia patients. Lumbar puncture (Choice C) is used to assess central nervous system involvement, not primarily for confirming ALL. Bone scan (Choice D) is not a standard diagnostic test for ALL and is mainly used for evaluating bone metastases in other conditions.

4. The nurse is preparing to perform a physical assessment on a 10-year-old girl. The nurse gives her the option of her mother staying in the room or leaving. This action should be considered which?

• A. Appropriate because of the child's age
• B. Appropriate, but the mother may be uncomfortable
• C. Inappropriate because of the child's age
• D. Inappropriate because the child is the same sex as the mother

Correct answer: A

Rationale: It is appropriate to give a 10-year-old the choice of having a parent present or not during an exam, respecting the child's growing need for privacy.

5. 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.

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