Introduction
Introduction ( 7 Questions)
A client who has a peanut allergy accidentally ingested a cookie that contained peanut butter. The client reports feeling anxious, having difficulty breathing, and having a tingling sensation in the mouth. The nurse should identify that these manifestations indicate which of the following types of hypersensitivity reactions?
Type I hypersensitivity reaction is also known as immediate hypersensitivity or anaphylaxis and occurs within minutes of exposure to an allergen. It involves the activation of mast cells and basophils that release histamine and other inflammatory mediators that cause vasodilation, bronchoconstriction, edema, and pruritus.
B is incorrect because Type II hypersensitivity reaction is also known as cytotoxic hypersensitivity or antibody-mediated hypersensitivity and occurs when antibodies bind to antigens on the surface of cells and cause cell lysis or damage. An example of this type of reaction is hemolytic transfusion reaction.
C is incorrect because Type III hypersensitivity reaction is also known as immune complex-mediated hypersensitivity and occurs when antigen-antibody complexes deposit in tissues and cause inflammation and tissue damage. An example of this type of reaction is serum sickness.
D is incorrect because Type IV hypersensitivity reaction is also known as delayed hypersensitivity or cell-mediated hypersensitivity and occurs when sensitized T cells react with antigens and release cytokines that activate macrophages and cause inflammation and tissue damage. An example of this type of reaction is contact dermatitis.
Type I hypersensitivity reaction is also known as immediate hypersensitivity or anaphylaxis and occurs within minutes of exposure to an allergen. It involves the activation of mast cells and basophils that release histamine and other inflammatory mediators that cause vasodilation, bronchoconstriction, edema, and pruritus.
B is incorrect because Type II hypersensitivity reaction is also known as cytotoxic hypersensitivity or antibody-mediated hypersensitivity and occurs when antibodies bind to antigens on the surface of cells and cause cell lysis or damage. An example of this type of reaction is hemolytic transfusion reaction.
C is incorrect because Type III hypersensitivity reaction is also known as immune complex-mediated hypersensitivity and occurs when antigen-antibody complexes deposit in tissues and cause inflammation and tissue damage. An example of this type of reaction is serum sickness.
D is incorrect because Type IV hypersensitivity reaction is also known as delayed hypersensitivity or cell-mediated hypersensitivity and occurs when sensitized T cells react with antigens and release cytokines that activate macrophages and cause inflammation and tissue damage. An example of this type of reaction is contact dermatitis.