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?
- A. Chest X-ray
- B. Sweat chloride test
- C. Pulmonary function test
- D. Sputum culture
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. At 0345, you receive a call for a woman in labor. Upon arriving at the scene, you are greeted by a very anxious man who tells you that his wife is having her baby 'now.' This man escorts you into the living room where a 25-year-old woman is lying on the couch in obvious pain. The woman states that her contractions are occurring every 4 to 5 minutes and lasting approximately 30 seconds each. Which of the following questions would be most appropriate to ask at this point?
- A. Has your bag of waters broken yet?
- B. Have you had regular prenatal care?
- C. At how many weeks gestation are you?
- D. How many other children do you have?
Correct answer: C
Rationale: In this scenario, asking about the gestational age is crucial as it helps determine the stage of labor and potential complications. Knowing the number of weeks of gestation can guide the healthcare provider in assessing the progress of labor and making decisions about the care of both the mother and the baby. Choices A, B, and D are not as relevant in this urgent situation. While knowing if the bag of waters has broken is important for assessing the progress of labor, determining gestational age is more critical at this point. Asking about regular prenatal care or the number of other children does not provide immediate information necessary for managing the current situation.
3. The nurse is assessing a 3-year-old boy whose parents brought him to the clinic when they noticed that the right side of his abdomen was swollen. What finding would suggest this child has a neuroblastoma?
- A. The child has a maculopapular rash on his palms.
- B. The parents report that their son is vomiting and not eating well.
- C. The parents report that their son is irritable and not gaining weight.
- D. Auscultation reveals wheezing with diminished lung sounds.
Correct answer: B
Rationale: Vomiting and poor appetite are common symptoms of neuroblastoma, a malignancy that arises from neural crest cells in the adrenal glands or sympathetic nervous system. This tumor can cause abdominal swelling due to its location and size, leading to symptoms like vomiting and decreased appetite. The presence of a maculopapular rash on the palms (Choice A) is not a typical finding associated with neuroblastoma. Irritability and failure to thrive (Choice C) are nonspecific symptoms that can be seen in various conditions but are not specifically indicative of neuroblastoma. Auscultation revealing wheezing with diminished lung sounds (Choice D) may suggest respiratory conditions rather than neuroblastoma.
4. Why should the nurse closely monitor the IV flow rate for a 5-month-old infant with severe diarrhea receiving IV fluids?
- A. Maintaining electrolyte balance
- B. Preventing dehydration
- C. Preventing fluid overload
- D. Avoiding cardiac overload
Correct answer: C
Rationale: In infants, monitoring IV flow rates is essential to prevent fluid overload, not cardiac overload. Excessive fluid administration can lead to complications such as pulmonary edema or congestive heart failure. It is crucial to maintain a balance between providing adequate hydration and avoiding fluid overload to prevent adverse outcomes. Options A, B, and D are incorrect because the primary concern is to prevent complications related to excess fluid rather than focusing on electrolyte balance, dehydration prevention, or avoiding cardiac overload.
5. The nurse is assessing a 9-year-old girl with a history of tuberculosis at age 6 years. She has been losing weight and has no appetite. The nurse suspects Addison disease based on which assessment findings?
- A. Arrested height and increased weight
- B. Thin, fragile skin and multiple bruises
- C. Hyperpigmentation and hypotension
- D. Blurred vision and enuresis
Correct answer: C
Rationale: In a child with suspected Addison disease, the presence of hyperpigmentation (bronzing of the skin) and hypotension are key clinical findings. Hyperpigmentation is due to increased ACTH stimulation, resulting in melanocyte stimulation. Hypotension occurs due to decreased aldosterone production and subsequent sodium loss. Choices A, B, and D are incorrect. Arrested height and increased weight are not typical of Addison disease; thin, fragile skin and multiple bruises are more indicative of conditions like Cushing's syndrome; blurred vision and enuresis are not typically associated with Addison disease.
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