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Questions and Answers
What is the main trigger for histamine release from mast cells in allergic reactions?
What is the main trigger for histamine release from mast cells in allergic reactions?
- IgE (correct)
- IgG
- IgM
- IgA
Which receptor type does histamine act on to cause bronchodilatation and vasoconstriction?
Which receptor type does histamine act on to cause bronchodilatation and vasoconstriction?
- H3 receptors
- H1 receptors (correct)
- H4 receptors
- H2 receptors
What is the primary pharmacological action of epinephrine in the treatment of anaphylaxis?
What is the primary pharmacological action of epinephrine in the treatment of anaphylaxis?
- Vasodilation
- Bronchoconstriction
- Vasoconstriction (correct)
- Anti-inflammatory effects
Why is early administration of corticosteroids important in anaphylaxis management?
Why is early administration of corticosteroids important in anaphylaxis management?
Which pharmacological agent is NOT a substitute for epinephrine in the treatment of anaphylaxis?
Which pharmacological agent is NOT a substitute for epinephrine in the treatment of anaphylaxis?
What is the main benefit of administering Epi-Pen or Ana-Pen devices in anaphylactic emergencies?
What is the main benefit of administering Epi-Pen or Ana-Pen devices in anaphylactic emergencies?
What is the mechanism of anaphylaxis?
What is the mechanism of anaphylaxis?
Which of the following is NOT a common allergen responsible for milder allergic reactions?
Which of the following is NOT a common allergen responsible for milder allergic reactions?
In allergic rhinitis, which of the following can cause symptoms like nasal congestion and mild wheezing?
In allergic rhinitis, which of the following can cause symptoms like nasal congestion and mild wheezing?
Which immunoglobulin is mainly involved in Type I hypersensitivity reactions?
Which immunoglobulin is mainly involved in Type I hypersensitivity reactions?
What is a characteristic symptom of atopic dermatitis?
What is a characteristic symptom of atopic dermatitis?
What is the central role of histamine release in mild allergic reactions?
What is the central role of histamine release in mild allergic reactions?
Which cells store histamine in granules and release it upon exposure to allergens?
Which cells store histamine in granules and release it upon exposure to allergens?
In hypersensitivity type I reactions, what binds to Fc receptors on mast cells?
In hypersensitivity type I reactions, what binds to Fc receptors on mast cells?
What is the main cause of histamine-induced bronchoconstriction in anaphylactic reactions?
What is the main cause of histamine-induced bronchoconstriction in anaphylactic reactions?
Which receptors are present on bronchial smooth muscle and endothelial cells, leading to various effects upon activation?
Which receptors are present on bronchial smooth muscle and endothelial cells, leading to various effects upon activation?
In systemic allergy like anaphylaxis, what leads to hypotension and cardiovascular collapse?
In systemic allergy like anaphylaxis, what leads to hypotension and cardiovascular collapse?
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