Question

Anaphylaxis is MOST accurately defined as a(n):

1) moderate allergic reaction that primarily affects the vasculature.
2) extreme allergic reaction that may affect multiple body systems.
3) severe allergic reaction that typically resolves without treatment.
4) allergic reaction that causes bronchodilation and vasoconstriction.

Answer 1

Anaphylaxis is an extreme allergic reaction affecting multiple body systems, potentially leading to life-threatening symptoms requiring immediate treatment with epinephrine.

Step-by-step explanation:

Anaphylaxis is most accurately defined as an extreme allergic reaction that may affect multiple body systems, as seen in option 2). Anaphylactic shock, another term for anaphylaxis, is a systemic and potentially life-threatening type I hypersensitivity reaction that can lead to symptoms such as a dangerous drop in blood pressure, severe swelling of the throat, and even death if not treated promptly with emergency medication such as epinephrine. This severe medical emergency requires immediate medical attention and the administration of epinephrine, which can be provided by an epinephrine autoinjector (like an EpiPen®) carried by those at risk for such reactions.