HESI LPN
Pediatric Practice Exam HESI
1. When caring for a neonate with a suspected tracheoesophageal fistula, what nursing care should be included?
- A. Elevating the head and not giving anything by mouth
- B. Elevating the head at all times
- C. Administering glucose water only during feedings
- D. Avoiding suctioning unless the infant is cyanotic
Correct answer: A
Rationale: When caring for a neonate with a suspected tracheoesophageal fistula, it is essential to elevate the head and avoid giving anything by mouth. Elevating the head helps prevent aspiration, and withholding oral intake reduces the risk of complications like aspiration pneumonia. Elevating the head at all times (choice B) is overly restrictive and unnecessary. Administering glucose water only during feedings (choice C) is not recommended as it can still lead to aspiration. Avoiding suctioning unless the infant is cyanotic (choice D) is incorrect because maintaining airway patency may require suctioning, irrespective of cyanosis, in a neonate with a suspected tracheoesophageal fistula.
2. While assessing an 18-month-old child, a nurse observes that the toddler can crawl upstairs but needs assistance when climbing the stairs upright. What does this action indicate to the nurse?
- A. Presence of talipes equinovarus
- B. Reflective of neurologic damage
- C. Expected behavior in a toddler of this age
- D. Existence of developmental dysplasia of the hip
Correct answer: C
Rationale: At 18 months of age, needing assistance to climb stairs upright is considered normal behavior for a toddler. Crawling upstairs is a different motor skill and does not necessarily correlate with the ability to climb stairs. The child is still developing gross motor skills, and climbing stairs upright typically requires more coordination and strength, which may not be fully developed at this age. Choices A, B, and D are not relevant in this scenario as the observed behavior is within the expected range of development for an 18-month-old child.
3. Why does a cleft lip predispose an infant to infection, concerning a nurse caring for the infant?
- A. Waste products accumulate along the defect.
- B. There is inadequate circulation in the defective area.
- C. Nutrition is inadequate due to ineffective feeding.
- D. Mouth breathing dries the oropharyngeal mucous membranes.
Correct answer: D
Rationale: Mouth breathing due to a cleft lip can dry the mucous membranes, increasing their susceptibility to infection. While waste product accumulation (Choice A) and inadequate circulation (Choice B) may contribute to complications, they are not directly related to infection in this context. Inadequate nutrition (Choice C) may affect overall health but is not the primary reason for infection predisposition in this case.
4. An infant with hypertrophic pyloric stenosis (HPS) is admitted to the pediatric unit. What does the nurse expect when palpating the infant’s abdomen?
- A. A distended colon
- B. Marked tenderness around the umbilicus
- C. An olive-sized mass in the right upper quadrant
- D. Rhythmic peristaltic waves in the lower abdomen
Correct answer: C
Rationale: When palpating the abdomen of an infant with hypertrophic pyloric stenosis (HPS), the nurse would expect to feel an olive-sized mass in the right upper quadrant. This finding is characteristic of HPS due to the hypertrophied pylorus muscle. Choices A, B, and D are incorrect. A distended colon is not typically associated with HPS. Marked tenderness around the umbilicus is not a specific finding of HPS. Rhythmic peristaltic waves in the lower abdomen are not expected in HPS, as the condition primarily affects the pylorus region of the stomach.
5. When teaching a class about trisomy 21, the instructor would identify the cause of this disorder as:
- A. nondisjunction.
- B. X-linked recessive inheritance.
- C. genomic imprinting.
- D. autosomal dominant inheritance.
Correct answer: A
Rationale: Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division that leads to the presence of an extra chromosome 21. This additional chromosome alters the normal genetic makeup, resulting in the characteristics associated with Down syndrome. Therefore, the correct answer is nondisjunction (Choice A). Choices B, C, and D are incorrect because Trisomy 21 is not caused by X-linked recessive inheritance, genomic imprinting, or autosomal dominant inheritance. Understanding the specific genetic mechanism involved in Trisomy 21 is crucial for grasping the basis of this chromosomal disorder.
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