The nurse knows that Type 1 Hypersensitivity reactions are caused by which of the following?
Release of memory T-cells
Organ rejection
Damage to blood vessels
Release of histamine
The Correct Answer is D
A. Release of memory T-cells: Memory T-cells are involved in Type IV delayed hypersensitivity, not Type I reactions.
B. Organ rejection: Organ rejection is associated with Type IV hypersensitivity reactions, not Type I.
C. Damage to blood vessels: This is more characteristic of Type III hypersensitivity reactions.
D. Release of histamine: Type I hypersensitivity reactions, such as anaphylaxis and allergic rhinitis, are triggered by the release of histamine from mast cells after IgE-mediated sensitization.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Obtain the client's vital signs: Although vital signs are essential, stopping the transfusion is the first priority to prevent further reaction.
B. Notify the charge nurse: Communication is important but not the immediate action.
C. Stop the transfusion: The first action is to stop the infusion to halt exposure to the potential allergen.
D. Administer prescribed diphenhydramine: Medication administration is secondary to stopping the transfusion.
Correct Answer is D
Explanation
A. Release of memory T-cells: Memory T-cells are involved in Type IV delayed hypersensitivity, not Type I reactions.
B. Organ rejection: Organ rejection is associated with Type IV hypersensitivity reactions, not Type I.
C. Damage to blood vessels: This is more characteristic of Type III hypersensitivity reactions.
D. Release of histamine: Type I hypersensitivity reactions, such as anaphylaxis and allergic rhinitis, are triggered by the release of histamine from mast cells after IgE-mediated sensitization.
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