a 3 year old child with a history of frequent respiratory infections is being evaluated for cystic fibrosis what diagnostic test should the nurse anti
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HESI LPN

Pediatric HESI 2024

1. A 3-year-old child with a history of frequent respiratory infections is being evaluated for cystic fibrosis. What diagnostic test should the nurse anticipate will be ordered?

Correct answer: B

Rationale: The sweat chloride test is the gold standard diagnostic test for cystic fibrosis as it measures the concentration of chloride in sweat. In cystic fibrosis, there is an abnormal transport of chloride across epithelial membranes, leading to elevated sweat chloride levels. A chest X-ray may show characteristic changes in the lungs associated with cystic fibrosis, but it is not a definitive diagnostic test. Pulmonary function tests assess lung function but do not specifically diagnose cystic fibrosis. Sputum culture may identify respiratory infections but does not confirm the diagnosis of cystic fibrosis.

2. During a nap, a 3-year-old hospitalized child wets the bed. How should the nurse respond?

Correct answer: C

Rationale: When a 3-year-old hospitalized child wets the bed during a nap, the nurse should respond by changing the child's clothes without discussing the incident. This approach helps to maintain the child's dignity, avoid embarrassment, and reduce anxiety about bedwetting. Asking the child to help remake the bed (Choice A) may not be developmentally appropriate for a 3-year-old and could potentially lead to further distress. Putting clean sheets on the bed over a rubber sheet (Choice B) addresses the aftermath but does not directly address the child's needs and feelings. Explaining that children should call the nurse when they need to go to the bathroom (Choice D) may not be effective in this situation as the child may not have control over bedwetting during sleep.

3. A healthcare provider is educating a parent group about the importance of immunizations. Which disease can be prevented by the varicella vaccine?

Correct answer: D

Rationale: The varicella vaccine is specifically designed to prevent chickenpox. Measles, mumps, and rubella are prevented by different vaccines: Measles is prevented by the measles, mumps, and rubella (MMR) vaccine; Mumps is prevented by the MMR vaccine; and Rubella is also prevented by the MMR vaccine. Therefore, the correct answer is D, Chickenpox, as it is the disease prevented by the varicella vaccine.

4. How should a nurse prepare a 15-month-old child diagnosed with hydrocephalus for a computed tomography (CT) scan?

Correct answer: D

Rationale: Preparing a toddler for a CT scan involves providing a simple explanation of the procedure to help reduce anxiety and fear. Shaving the child's head is unnecessary for a CT scan and may increase distress. Starting an IV infusion or administering sedatives may not be appropriate or necessary for all pediatric patients undergoing CT scans, especially if the child can cooperate without these interventions.

5. A child is brought to the clinic after tripping over a rock. The child states, 'I twisted my ankle,' and is given a diagnosis of a sprain. What intervention is most important for the nurse to include in the discharge instructions for this child?

Correct answer: A

Rationale: The correct intervention for a sprained ankle is to apply ice for 20 minutes every hour for the first 24 hours, then remove for 60 minutes to prevent tissue damage. This regimen helps reduce swelling and pain. Bed rest with the leg elevated for an extended period (36 hours) may lead to stiffness and decreased range of motion. While NSAIDs can be used for pain, they may not be necessary if pain is manageable with ice and rest. Using a compression dressing for 72 hours continuously may impede proper circulation and delay healing by restricting blood flow.

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