New York State Emergency Medical Technician (EMT) Practice Exam

What is a common sign of anaphylaxis?

1. Wheezing

2. Elevated blood pressure

3. Rapid pulse

4. Fever

The correct answer is: Wheezing

Wheezing is a common sign of anaphylaxis because it indicates bronchoconstriction, which occurs when the airways narrow due to an allergic reaction. During anaphylaxis, the body releases various chemicals, including histamine, that can lead to inflammation and constriction of the bronchial passages, making it difficult for the person to breathe. This respiratory distress is often recognized by a wheezing sound during exhalation, which is indicative of compromised airway function. In contrast, elevated blood pressure is not typically associated with anaphylaxis; rather, patients often experience hypotension (low blood pressure) due to vascular dilation. A rapid pulse can occur in many situations, including shock, but it is not as specific to anaphylaxis as wheezing. Fever is generally more associated with infections rather than allergic reactions, further distinguishing it from the typical presentation of anaphylaxis. Thus, wheezing stands out as a hallmark sign of this serious allergic reaction.