HESI LPN
Pediatric Practice Exam HESI
1. When preparing a 2-year-old child for surgery, what preoperative teaching should be provided to help them understand the procedure?
- A. Explaining the procedure in simple terms
- B. Using a doll to demonstrate the procedure
- C. Showing pictures of the hospital environment
- D. Allowing the child to play with medical equipment
Correct answer: B
Rationale: The correct preoperative teaching for a 2-year-old child undergoing surgery involves using a doll to demonstrate the procedure. This method helps the child understand what to expect in a non-threatening and visual way, making the experience less intimidating. Explaining the procedure in simple terms (Choice A) may not effectively convey the details to a young child. Showing pictures of the hospital environment (Choice C) may not directly address the surgical procedure itself. Allowing the child to play with medical equipment (Choice D) can be unsafe and may not effectively prepare the child for the surgery.
2. The parents of a 6-week-old infant who was born without an immune system ask a nurse why their baby is still so healthy. How should the nurse reply?
- A. Exposure to pathogens during this time can be limited.
- B. Some antibodies are produced by the infant’s colonic bacteria.
- C. Antibodies are passively received from the mother through the placenta and breast milk.
- D. Fewer antibodies are produced by the fetal thymus during the eighth and ninth months of gestation.
Correct answer: C
Rationale: The correct answer is C. Infants receive passive immunity through antibodies from the mother during pregnancy and breastfeeding, which protect them initially. Choice A is incorrect because a 6-week-old infant born without an immune system would not be able to limit exposure to pathogens effectively. Choice B is incorrect as antibodies produced by colonic bacteria are not a significant source of immunity in infants. Choice D is incorrect as the fetal thymus primarily plays a role in T cell development rather than antibody production during gestation.
3. 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.
4. A nurse is developing a teaching plan for an 8-year-old child who has recently been diagnosed with type 1 diabetes. What developmental characteristic of a child this age should the nurse consider?
- A. Child is in the concrete operational stage of cognition.
- B. Child’s dependence on peer influence is increasing.
- C. Child will welcome opportunities for participation in self-care.
- D. Child is exploring their sense of self-identity.
Correct answer: C
Rationale: The correct answer is C. At the age of 8, children are typically eager to take on responsibilities and participate in self-care activities. This is a crucial developmental characteristic to consider when educating a child about managing a chronic condition like type 1 diabetes. Choice A is incorrect as children at this age are usually in the concrete operational stage, not abstract level, of cognition. Choice B is incorrect because while peer influence is important, it does not reach its peak at this age. Choice D is incorrect as exploring self-identity is more characteristic of adolescence, not 8-year-old children.
5. After completing an oral examination of a healthy 2-year-old child, the parent asks when the child should first be taken to the dentist. When is the most appropriate time in the child’s life for the nurse to suggest?
- A. Before starting school
- B. Within the next few months
- C. When the first deciduous teeth are lost
- D. At the next dental visit of a family member
Correct answer: B
Rationale: It is recommended that a child should visit the dentist within the next few months after turning two years old. This allows for early dental check-ups to monitor oral health, detect any issues early on, and establish a good oral hygiene routine. Choice A ('Before starting school') is not as specific and may delay the child's first dental visit. Choice C ('When the first deciduous teeth are lost') is too late for the first dental visit, as preventive care should start earlier. Choice D ('At the next dental visit of a family member') is not ideal as the child's dental needs should be addressed independently of family members' visits.
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