HESI RN
HESI Pediatrics Practice Exam
1. A mother brings her 2-year-old son to the clinic because he has been crying and pulling on his earlobe for the past 12 hours. The child’s oral temperature is 101.2°F. Which intervention should the nurse implement?
- A. Ask the mother if the child has had a runny nose
- B. Cleanse purulent exudate from the affected ear canal
- C. Apply a topical antibiotic to the periauricle area
- D. Provide parent education to prevent recurrence
Correct answer: A
Rationale: In a child with ear pain and fever, asking about a runny nose is important to assess if the ear pain is associated with a respiratory infection, such as otitis media. This information can guide further assessment and treatment decisions. Choice B is incorrect because cleansing purulent exudate should be done by a healthcare provider, not the nurse. Choice C is incorrect as topical antibiotics should only be applied under healthcare provider's orders. Choice D is not the priority at this moment, as the immediate concern is assessing the association between the ear pain and a possible respiratory infection.
2. The parents of a 3-year-old boy who has Duchenne muscular dystrophy ask, 'How can our son have this disease? We are wondering if we should have any more children.' What information should the nurse provide to parents?
- A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family
- B. The striated muscle groups of males can be impacted by a lack of the protein dystrophin in their mothers
- C. The male infant had a viral infection that went unnoticed and untreated so muscle damage was incurred
- D. Birth trauma with a breech vaginal birth causes damage to the spinal cord, thus weakening the muscles
Correct answer: A
Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder that primarily affects males. It is crucial for the nurse to explain to the parents that this condition follows an inheritance pattern where the gene mutation responsible for the disorder is located on the X chromosome. Males have only one X chromosome, so if they inherit the mutated gene, they will develop the disease. Females, on the other hand, have two X chromosomes, providing a backup copy that can compensate for the mutation. Understanding this inheritance pattern is essential for family planning decisions, as the risk of passing on the disorder to future children can be explained based on this genetic inheritance. Choices B, C, and D are incorrect because they do not address the genetic basis of Duchenne muscular dystrophy or its inheritance pattern, which is crucial information for the parents in this scenario.
3. When should a mother introduce solid foods to her infant? The mother of a 4-month-old baby girl asks the nurse when she should introduce solid foods to her infant. The mother states, 'My mother says I should put rice cereal in the baby’s bottle now.' The nurse should instruct the mother to introduce solid foods when her child exhibits which behavior?
- A. Stops rooting when hungry
- B. Opens mouth when food comes her way
- C. Awakens once for nighttime feedings
- D. Gives up a bottle for a cup
Correct answer: B
Rationale: The correct answer is 'B: Opens mouth when food comes her way.' Readiness for solid foods is indicated by the infant showing interest in food and being able to sit up with support. This behavior demonstrates the infant's readiness to start introducing solid foods in their diet. Choices A, C, and D are incorrect because stopping rooting when hungry, awakening once for nighttime feedings, and giving up a bottle for a cup are not indicators of readiness for solid foods in infants.
4. 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.
5. A mother brings her 8-month-old baby boy to the clinic because he has been vomiting and having diarrhea for the last 3 days. Which assessment is most important for the nurse to make?
- A. Assess the infant's abdomen for tenderness
- B. Determine if the infant has been exposed to a virus
- C. Measure the infant’s pulse
- D. Evaluate the infant’s cry
Correct answer: C
Rationale: The most crucial assessment in this scenario is to measure the infant's pulse. Pulse measurement is essential to evaluate the severity of dehydration, which can be a significant concern in a baby experiencing vomiting and diarrhea for several days. Assessing the abdomen for tenderness may provide information on potential causes of symptoms but is not as urgent as monitoring hydration status. Determining exposure to a virus is important for infection control but does not directly address the immediate issue of dehydration. Evaluating the infant's cry, although a form of communication, does not provide critical information regarding the baby's physiological status in this situation.
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