14163078
Description
Flashcards by Averil Tam, updated more than 1 year ago
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Created by Averil Tam
almost 6 years ago
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| Question | Answer |
| 1. Which of the following proteins released from mast cells is most responsible for urticaria with onset 20 minutes after ingestion of cow milk? A. Chemokines B. Cytokines C. Histamine D. Leukotrienes E. Proteases | C. Histamine released from preformed granules in mast cells results in urticaria. It is also responsible for the wheal in skin prick test. Hence the need to avoid anti-histamines in 48 hours prior to SPT. |
| 2. Skin prick allergy testing and blood based allergen specific testing (‘RAST’) are most likely to be informative in which condition? A. Blood in stools hours after ingestion of breast milk B. Food bolus impaction after eating steak C. Perioral swelling and urticaria 5 minutes after eating egg D. Profuse vomiting 2 hours after ingestion of cow milk E. Scaly excoriated eczema in the elbow flexures | C. SPT and allergen specific testing will not be informative in non-IgE mediated disorders. |
| 3. 4yo who has acutely developed symptoms of asthma 5 minutes after eating some bread with peanut butter. What is the most appropriate treatment? A. Adrenalin B. Anti-histamine C. Prednisone D. Ventolin | A. Adrenalin is the most appropriate treatment for anaphylaxis (severe allergic reaction with respiratory and/or cardiovascular compromise). |
| 5. TRUE/FALSE? You should avoid introduction of egg in a 6 month old baby with eczema and a family history of peanut allergy. | False. Introduction of allergenic foods during the first year of life recommended in all infants including those at high risk of allergy. Recent studies suggest this may be preventative. |
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