HESI LPN
Pediatric HESI Test Bank
1. When describing urticaria, what would an instructor include?
- A. It is a type IV hypersensitivity reaction.
- B. Histamine release leads to vasodilation.
- C. Wheals appear first followed by erythema.
- D. The nonpruritic rash blanches with pressure.
Correct answer: B
Rationale: The correct answer is B. Urticaria is a type I hypersensitivity reaction where histamine release leads to vasodilation and the formation of characteristic wheals. Choice A is incorrect as urticaria is associated with type I hypersensitivity, not type IV. Choice C is incorrect because in urticaria, erythema typically appears before the development of wheals. Choice D is incorrect as urticaria is typically pruritic and does not blanch with pressure.
2. During new employee orientation, a nurse is explaining how to prevent IV infections. Which of the following statements by an orientee indicates understanding of the preventive strategies?
- A. “I will leave the IV catheter in place after the client completes the course of IV antibiotics.”
- B. “As long as I am working with the same client, I can use the same IV catheter for my second insertion attempt.”
- C. “If my client needs to use the restroom, it would be safer to disconnect their IV infusion as long as I clean the injection port thoroughly with an antiseptic swab.”
- D. “I will replace any IV catheter when I suspect contamination during insertion.”
Correct answer: D
Rationale: The correct answer is D: “I will replace any IV catheter when I suspect contamination during insertion.” This statement demonstrates an understanding of preventive strategies for IV infections. Suspecting and replacing any contaminated IV catheter during insertion is crucial to prevent infections and ensure patient safety. Choices A, B, and C are incorrect because leaving the IV catheter in place after completing antibiotics, reusing the same IV catheter, and disconnecting the IV infusion without proper precautions can increase the risk of infections. Therefore, option D is the best choice for preventing IV infections.
3. Which type of wound would most likely require immediate intervention by the healthcare provider?
- A. Laceration
- B. Abrasion
- C. Contusion
- D. Ulceration
Correct answer: A
Rationale: A laceration would most likely require immediate intervention by the healthcare provider due to its deeper tissue damage, significant bleeding, and higher risk of infection compared to abrasions, contusions, and ulcerations. Lacerations often need prompt attention to control bleeding, clean the wound, and reduce the risk of infection. Abrasions are superficial wounds that usually do not require urgent attention as they tend to heal well on their own with basic wound care. Contusions are bruises that typically resolve on their own without immediate intervention. Ulcerations are open sores that may require intervention but not necessarily immediate action unless complicated by infection or other issues.
4. A nurse is assessing a client with dementia who is showing signs of increased confusion and agitation in the late afternoon. What is the most likely explanation for the client's symptoms?
- A. Anxiety
- B. Depression
- C. Sun-downing syndrome
- D. Medication side effects
Correct answer: C
Rationale: The correct answer is C: Sun-downing syndrome. Sun-downing syndrome is a phenomenon commonly seen in individuals with dementia, where they exhibit increased confusion and agitation in the late afternoon or evening. This pattern of behavior is believed to be linked to disruptions in the circadian rhythm and can be triggered by factors such as fatigue, low lighting, or increased shadows during the evening. Choices A and B, anxiety and depression, may be comorbid conditions in individuals with dementia but are not the primary explanation for the symptoms described. While medication side effects (Choice D) should always be considered in a client with dementia, given the time-specific nature of the symptoms, sun-downing syndrome is the most likely explanation in this case.
5. Which type of cell is responsible for producing antibodies in the immune system?
- A. B lymphocytes
- B. T lymphocytes
- C. Macrophages
- D. Neutrophils
Correct answer: A
Rationale: The correct answer is A: B lymphocytes. B lymphocytes (B cells) are a crucial part of the adaptive immune system. They produce antibodies, which are proteins that specifically target and neutralize pathogens such as bacteria and viruses. T lymphocytes (choice B) are involved in cell-mediated immunity rather than antibody production. Macrophages (choice C) are phagocytic cells that engulf and digest pathogens but do not produce antibodies. Neutrophils (choice D) are a type of white blood cell that primarily function in the innate immune response by phagocytosing pathogens.