Deck 15: Immediate Allergic Reactions

Question 1

What is the difference between anaphylactic and anaphylactoid reactions?

A) Anaphylaxis causes more serious symptoms.
B) Anaphylactoid reactions do not involve mast cells or basophils.
C) Anaphylactoid reactions cannot be prevented and anaphylactic reactions are preventable.
D) Anaphylaxis is caused by IgE and anaphylactoid reactions are caused by complement.

Answer 1

Anaphylaxis is caused by IgE and anaphylactoid reactions are caused by complement.

Question 2

What role does histamine play in allergic reactions?

A) Increases vascular permeability
B) Stimulates eosinophil production
C) Stimulates granule release from mast cells
D) Prevents activation of the coagulation cascade

Answer 2

Increases vascular permeability

Question 3

Which of the following is/are responsible for class switching to IgE production in allergic reactions?
I. IL-5
II. IL-4
III. IL-13

A) I only
B) III only
C) I and II
D) II and III
E) I, II, and III

Answer 3

II and III

Question 4

During an allergic reaction, IgE binds to Fc receptors on what cell types?

A) Mast cells and basophils
B) Monocytes and macrophages
C) Macrophages and neutrophils
D) Cytotoxic T lymphocytes (CTLs) and natural killer (NK) cells

Question 5

The late phase of asthma mainly involves:

A) Vasodilation
B) Inflammation
C) Anticoagulation
D) Bronchoconstriction

Question 6

The radioallergosorbent (RAST) assay is used to test which individuals for allergies?

A) All individuals get a RAST test
B) Individuals younger than the age of 12
C) Individuals who are at risk for anaphylaxis during other types of testing
D) Individuals who have had no response to previous allergy testing but still appear to have allergies

Question 7

Oral allergy syndrome is caused by:

A) Food allergies
B) Overproduction of eosinophils
C) Bacterial infection that stimulates IgE production
D) Cross reaction between shared antigens on food and pollen

Question 8

Hyposensitization therapy results in the production of:

A) IgA
B) IgE
C) IgG
D) IgM

Question 9

Which of the following could be a potential outcome of an allergy-induced increase in vascular permeability?
I. Edema
II. Hypovolemic shock
III. Smooth muscle contraction

A) I only
B) III only
C) I and II
D) II and III
E) I, II, and III

Question 10

Which of the following is a true allergic reaction?
I. Latex allergy
II. Cockroach allergy
III. Radiocontrast media allergy

A) I only
B) III only
C) I and II
D) II and III
E) I, II, and III