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When a patient presents at the emergency department

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7. When a patient presents at the emergency department for an allergic reaction, the nurse recognizesthe most severe consequence of a type I hypersensitivity reaction is:1.Urticaria2.Hives3.Anaphylaxis4.Antibody-dependent cell-mediated cytotoxicity (ADCC)ANS: CThe most rapid and severe immediate hypersensitivity type I reaction is anaphylaxis.Urticaria, or hives, is a dermal (skin) manifestation of allergic reactions. Hives and urticaria are similarresponses.ADCC is a mechanism that involves natural killer (NK) cells. Antibodies on the target cell arerecognized by Fc receptors on the NK cells, which release toxic substances that destroy the target cell.8. When histamine is released in the body, which of the following responses would the nurse
expect?9. Which information would indicate more teaching is needed regarding hypersensitivity reactions?
Type II reactions involve antibody responses.
Type III reactions involve antibody responses.10. A 10-year-old male presents to his primary care provider reporting wheezing and difficultybreathing. History reveals that both of the childs parents suffer from allergies. Which of the followingterms would be used to classify the child?
Atopic individuals are genetically predisposed to the development of allergies.Desensitization is a term used to describe the process of reducing the severity to allergies.Hypersensitivity is an altered immunologic response to an antigen that results in disease or damage tothe individual.Autoimmunity is a disturbance in the immunologic tolerance of self-antigens.11. A 30-year-old female presents to her primary care provider reporting fatigue, excessive sweating,and increased appetite. Physical examination reveals protruding eyes, and laboratory testing revealshyperthyroidism secondary to autoantibody production. This disorder falls into the category of type_____ hypersensitivity.a. I b. II c. III d. IVANS: BThe patient is experiencing type II hypersensitivity. In hyperthyroidism, autoantibody binds to andactivates receptors for thyroid-stimulating hormone (TSH) (a pituitary hormone that controls theproduction of the hormone thyroxine by the thyroid).The patient is experiencing a type II reaction, not type I, which is the most common type of allergicreaction.The patient is experiencing a type II reaction, not type III, which is not organ specific. The patient isexperiencing a type II reaction; type IV is a delayed reaction.

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Term
Fall
Professor
MaureenL.Rauschhuber
Tags
55 year old male

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