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. What is the most common piece of medical equipment that can transmit harmful microorganisms among patients?

• A. Thermometer
• B. Stethoscope
• C. Injection needle
• D. Disposable gloves

Correct answer: B

Rationale: The correct answer is B: Stethoscope. A stethoscope is commonly used between patients, and if not correctly disinfected, it can be a dangerous source of spreading microorganisms. Thermometers typically have barriers to prevent this type of transmission. Injection needles are discarded immediately after use and not reused, making them an unlikely source of transmission. Similarly, disposable gloves are not reused, so they are also not a common source of harmful microorganism transmission.

3. The nurse has just started assessing a young child who is febrile and appears ill. There is hyperextension of the child's head (opisthotonos) with pain on flexion. Which is the most appropriate action?

• A. Ask the parent when the neck was injured
• B. Refer for immediate medical evaluation
• C. Continue assessment to determine the cause of the neck pain
• D. Record head lag on the assessment record and continue the assessment of the child

Correct answer: B

Rationale: Opisthotonos with pain on flexion is a sign of possible meningitis or other serious neurological conditions, requiring immediate medical evaluation.

4. Which condition is often associated with a "ground-glass" appearance on a chest x-ray in neonates?

• A. Pneumonia
• B. Respiratory distress syndrome
• C. Bronchopulmonary dysplasia
• D. Congenital diaphragmatic hernia

Correct answer: B

Rationale: The correct answer is B, Respiratory distress syndrome. Respiratory distress syndrome often presents with a "ground-glass" appearance on a chest x-ray in neonates due to surfactant deficiency. Choice A, Pneumonia, typically appears as patchy infiltrates on chest x-ray. Choice C, Bronchopulmonary dysplasia, is characterized by hyperinflation and fibrosis, not a ground-glass appearance. Choice D, Congenital diaphragmatic hernia, usually shows mediastinal shift and bowel loops in the chest cavity on x-ray, not a ground-glass appearance.

5. The nurse is caring for a child receiving chemotherapy with the following orders: Zantac 70 mg IV in normal saline 30 mL to infuse over 30 minutes. The nurse should set the infusion pump to deliver how many mL/hour?

• A. 60 mL/hour
• B. 45 mL/hour
• C. 30 mL/hour
• D. 15 mL/hour

Correct answer: A

Rationale: The correct answer is A: 60 mL/hour. The total volume to be infused is 30 mL over 30 minutes. To calculate the infusion rate in mL/hour, divide the total volume by the total time in hours. In this case, 30 mL / 0.5 hours = 60 mL/hour. Choice B, 45 mL/hour, is incorrect as it does not correspond to the calculated infusion rate. Choices C and D, 30 mL/hour and 15 mL/hour respectively, are also incorrect based on the calculation.

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