The nurse is conducting an admission assessment of an 11-month-old infant with CHF who is scheduled for repair of restenosis of coarctation of the aorta that was repaired 4 days after birth. Findings include blood pressure higher in the arms than the lower extremities, pounding brachial pulses, and slightly palpable femoral pulses. What pathophysiologic mechanisms support these findings?

A. The aortic semilunar valve obstructs blood flow into the systemic circulation

B. The lumen of the aorta reduces the volume of the blood flow to the lower extremities

C. The pulmonic valve prevents adequate blood volume into the pulmonary circulation

D. An opening in the atrial septum causes a murmur due to a turbulent left to right shunt

Correct Answer: B
Rationale: The findings are consistent with coarctation of the aorta, where narrowing of the aorta leads to decreased blood flow to the lower extremities. This results in higher blood pressure in the arms compared to the lower extremities, pounding brachial pulses, and slightly palpable femoral pulses. Choices A, C, and D are incorrect because they do not align with the pathophysiological mechanisms of coarctation of the aorta, which specifically involves narrowing of the aortic lumen reducing blood flow to the lower extremities.

A 4-year-old child is brought to the clinic with complaints of ear pain and fever. The practical nurse suspects otitis media. Which symptom supports this suspicion?

• A. Clear nasal discharge.
• B. Dry, hacking cough.
• C. Tugging at the ear.
• D. Sore throat.

Correct Answer: C
Rationale: Tugging at the ear is a common symptom in children with otitis media. It often indicates discomfort or pain in the ear, suggesting inflammation or infection in the middle ear. This behavior is frequently observed in young children who are unable to express their discomfort verbally, making it a significant clinical indicator for otitis media in this age group. Clear nasal discharge (Choice A) is more indicative of a cold or allergies, while a dry, hacking cough (Choice B) is not typically associated with otitis media. Although a sore throat (Choice D) can sometimes accompany ear infections, tugging at the ear is a more specific and reliable symptom in this case.

The nurse is assessing a 6-month-old infant. Which response requires further evaluation by the nurse?

• A. Has doubled birth weight.
• B. Turns head to locate sound.
• C. Plays peek-a-boo.
• D. Demonstrates startle reflex.

Correct Answer: D
Rationale: At 6 months old, the startle reflex should diminish, so its persistence warrants further evaluation by the nurse. Choices A, B, and C are appropriate developmental milestones for a 6-month-old infant. By 6 months, infants typically double their birth weight, exhibit localization of sound by turning their head, and engage in interactive play like peek-a-boo.

After reinforcing information on treating a sprained ankle, what statement by the adolescent indicates to the practical nurse that further instruction is needed?

• A. Keep the leg elevated when sitting.
• B. Wrap the ankle in an elastic bandage for support.
• C. Apply warm compresses to the ankle for the first 24 hours.
• D. Put an ice pack on the ankle, alternating 30 minutes on and 30 minutes off.

Correct Answer: C
Rationale: The correct answer is C. Applying warm compresses to a sprained ankle within the first 24 hours is incorrect as it can increase swelling and inflammation. Instead, cold compresses are recommended to help reduce swelling and pain. Option A, keeping the leg elevated, helps in reducing swelling. Option B, wrapping the ankle in an elastic bandage, provides support. Option D, using an ice pack in intervals, is effective in reducing swelling and pain. Therefore, the statement about applying warm compresses indicates the need for further instruction.

The nurse is assessing a 4-month-old infant who has just received routine immunizations. The mother reports that the baby has been fussy and has a low-grade fever since the immunizations. What is the best response by the nurse?

• A. These are common side effects and should resolve within a few days
• B. Your baby may be having an allergic reaction to the immunizations
• C. You should bring your baby to the clinic immediately for evaluation
• D. You should give your baby aspirin to help with the fever

Correct Answer: A
Rationale: The correct response by the nurse is to reassure the mother that fussiness and low-grade fever are common side effects of immunizations in infants and should resolve within a few days. It is essential to educate the mother about these expected reactions to alleviate her concerns. Choice B is incorrect because allergic reactions to immunizations usually present with more severe symptoms such as difficulty breathing or swelling. Choice C is not warranted unless there are concerning symptoms present. Choice D is inappropriate as aspirin is contraindicated in infants due to the risk of Reye's syndrome.