Nursing Elites

1. What is the most common cause of bronchiolitis in infants?

• A. Adenovirus
• B. Influenza virus
• C. Respiratory syncytial virus
• D. Parainfluenza virus

Correct answer: C

Rationale: The correct answer is C, Respiratory syncytial virus (RSV). RSV is the leading cause of bronchiolitis, a common respiratory condition in infants that results in inflammation of the small airways in the lung. It is highly contagious and can cause severe respiratory distress in young children, particularly those under 2 years old. Choice A, Adenovirus, is not the most common cause of bronchiolitis in infants. Choice B, Influenza virus, may cause respiratory infections but is not the primary cause of bronchiolitis. Choice D, Parainfluenza virus, can cause croup and other upper respiratory infections but is not the main cause of bronchiolitis in infants.

2. The parent of a 1-month-old infant voices concern about the infant’s respirations. The parent states the respirations are rapid and irregular. Which information should the nurse provide?

• A. The normal respiratory rate for an infant at this age is between 20 and 30 breaths per minute.
• B. The respirations of a 1-month-old infant are normally irregular and periodically pause.
• C. An infant at this age should have regular respirations.
• D. The irregularity of the infant's respirations is concerning; I will notify the health care provider.

Correct answer: B

Rationale: The correct answer is B. Irregular respirations with periodic pauses are normal in a 1-month-old infant. Choice A is incorrect because the normal respiratory rate for an infant at this age is higher than the range provided. Choice C is incorrect as irregular respirations are expected in infants. Choice D is not appropriate as irregular respirations with periodic pauses are a normal finding in young infants and do not necessarily indicate a concern that requires immediate notification of the healthcare provider.

3. Which muscle is contraindicated for the administration of immunizations in infants and young children?

• A. Deltoid
• B. Dorsogluteal
• C. Ventrogluteal
• D. Anterolateral thigh

Correct answer: B

Rationale: The dorsogluteal muscle is contraindicated for immunizations in infants and young children due to the risk of injury to the sciatic nerve. The anterolateral thigh is the preferred site.

4. 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.

5. A child has a central venous access device for intravenous (IV) fluid administration. A blood sample is needed for a complete blood count, hemogram, and electrolytes. What is the appropriate procedure to implement for this blood sample?

• A. Perform a new venipuncture to obtain the blood sample.
• B. Interrupt the IV fluid and withdraw the blood sample needed.
• C. Withdraw a blood sample equal to the amount of fluid in the device, discard, and then withdraw the sample needed.
• D. Flush the line and central venous device with saline and then aspirate the required amount of blood for the sample.

Correct answer: C

Rationale: Withdrawing and discarding a sample equal to the amount of fluid in the device ensures that the blood drawn is not diluted by the IV fluids, providing accurate lab results.

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