Florida State Paramedic Practice Exam

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What is a classic sign of anaphylaxis aside from facial swelling?

Rash
Hives
Hypotension
Abdominal pain

The correct answer is: Hypotension

A classic sign of anaphylaxis, aside from facial swelling, is hypotension. Anaphylaxis is a severe, life-threatening allergic reaction that can affect multiple systems in the body. During anaphylactic shock, the body's response to an allergen can lead to a rapid drop in blood pressure, also known as hypotension. This happens due to widespread vasodilation and increased vascular permeability, leading to fluid leakage from the blood vessels. Hypotension is critical in recognizing anaphylaxis, as it can signify that the patient is in a state of shock, emphasizing the urgent need for medical intervention. While rash, hives, and abdominal pain can also present in allergic reactions, they are not as critical in the immediate recognition of anaphylaxis as hypotension. The presence of hypotension is often indicative of a more severe systemic reaction, making it a classic sign that warrants prompt clinical attention.