Pediatric HESI Test Bank Related

Review Pediatric HESI Test Bank related questions and content

An instructor is developing a plan for a class of nursing students on various skin disorders. When describing urticaria, what would the 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, not type IV. When triggered, histamine release leads to vasodilation, causing characteristic wheals. Wheals are typically followed by erythema. The rash in urticaria is pruritic and does blanch with pressure, unlike the nonpruritic rash described in choice D. Therefore, the most appropriate description of urticaria includes histamine release and vasodilation, as stated in choice B.