a two year old child with a heart failure hf is admitted for replacement of a graft for coarctation of the aorta prior to administering the next dose

HESI RN

Pediatric HESI

1. A two-year-old child with heart failure is admitted for replacement of a graft for coarctation of the aorta. Prior to administering the next dose of digoxin (Lanoxin), the nurse obtains an apical heart rate of 128 bpm. What action should the nurse take?

A. Determine the pulse deficit.
B. Administer the scheduled dose.
C. Calculate the safe dose range.
D. Review the serum digoxin level.

Correct answer: B

Rationale: Administering the scheduled dose is appropriate in this scenario as the heart rate of 128 bpm falls within the acceptable range for a two-year-old child with heart failure. It indicates that the child may benefit from the therapeutic effects of digoxin. Monitoring the heart rate closely after administration is essential to ensure the medication's effectiveness and safety. Determining the pulse deficit (Choice A) is not necessary in this situation as the heart rate is within the acceptable range. Calculating the safe dose range (Choice C) is not needed since the heart rate is already within the expected parameters. Reviewing the serum digoxin level (Choice D) is not the immediate action required in this case where the heart rate is within the normal range.

2. A 6-month-old female is scheduled to receive diphtheria, tetanus toxoid, and acellular pertussis vaccine (DTaP) and IPV (inactivated poliovirus vaccine) immunizations. She is recovering from a cold but is otherwise healthy and afebrile. Her 5-year-old sister is receiving chemotherapy. Which considerations should the nurse make for this situation?

A. DTaP and IPV can be safely given to the infant at the scheduled time.
B. DTaP and IPV are contraindicated because the infant has a cold.
C. IPV is contraindicated because her sister is immunocompromised.
D. DTaP is contraindicated because her sister is immunocompromised.

Correct answer: A

Rationale: DTaP and IPV can be safely administered to a child with a mild illness like a cold, even if there is an immunocompromised family member, as these vaccines do not contain live viruses. It is important to ensure that the child is otherwise healthy and afebrile before administering the vaccines. The presence of a cold is not a contraindication for receiving DTaP and IPV vaccines. Choice A is correct because the infant can receive both vaccines as scheduled. Choice B is incorrect as having a cold does not contraindicate DTaP and IPV administration. Choice C is incorrect because IPV is not contraindicated due to the sister's immunocompromised status. Choice D is incorrect as both DTaP and IPV can be given in this scenario.

3. 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.

4. What suggestion should the nurse provide to prevent diaper rash in a 4-month-old infant as requested by the mother?

A. Generously powder the baby's diaper area with talcum powder at each diaper change to promote dryness.
B. Wash the diaper area every 2 hours with soap and water to help prevent skin breakdown.
C. Use a barrier cream, such as zinc oxide, which does not have to be completely removed with each diaper change.
D. Place a cloth diaper inside the disposable diaper for overnight periods when increased wearing time is likely.

Correct answer: C

Rationale: Using a barrier cream like zinc oxide forms a protective layer on the skin, creating a barrier against irritants and moisture, thus helping to prevent diaper rash. Unlike other options, barrier creams do not need to be completely removed at each diaper change, allowing the skin to remain protected between changes.

5. During a follow-up clinical visit, a mother tells the nurse that her 5-month-old son, who had surgical correction for tetralogy of Fallot, has rapid breathing, often takes a long time to eat, and requires frequent rest periods. The infant is not crying while being held, and his growth is in the expected range. Which intervention should the nurse implement?

A. Stimulate the infant to cry to produce cyanosis
B. Auscultate the heart and lungs while holding the infant
C. Evaluate the infant for failure to thrive
D. Obtain a 12-lead electrocardiogram

Correct answer: B

Rationale: Auscultating the heart and lungs while the infant is held is the most appropriate intervention to assess his current condition. This action allows the nurse to gather important information regarding the cardiovascular and respiratory status of the infant, which is crucial in evaluating his post-surgical recovery and overall well-being. Option A is incorrect as stimulating the infant to cry intentionally is not necessary and could cause distress. Option C is incorrect as the infant's growth is within the expected range, indicating no signs of failure to thrive. Option D is incorrect as obtaining a 12-lead electrocardiogram is not the initial intervention needed in this situation; assessing the heart and lungs through auscultation is more immediate and informative.