foundations of nursing test bank Related

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A patients decline in respiratory and renal function has been attributed to Goodpasture syndrome, which is a type II hypersensitivity reaction. What pathologic process underlies the patients health problem?

  • A. Antigens have bound to antibodies and formed inappropriate immune complexes.
  • B. The patients body has mistakenly identified a normal constituent of the body as foreign.
  • C. Sensitized T cells have caused cell and tissue damage.
  • D. Mast cells have released histamines that directly cause cell lysis.
Correct Answer: B

Rationale: The correct answer is B because in Goodpasture syndrome, the patient's immune system mistakenly targets normal constituents of the body, specifically the basement membrane of the kidneys and lungs. This autoimmune response leads to inflammation and damage in these organs, resulting in respiratory and renal dysfunction.
Choice A is incorrect as immune complexes are not the primary mechanism in Goodpasture syndrome. Choice C is incorrect as it refers to T cell-mediated immune responses, which are not the main drivers in this condition. Choice D is incorrect as histamine release and cell lysis are not the main processes involved in Goodpasture syndrome.