Question

you are called to treat a patient who is having an anaphylactic reaction to antigen exposure. which of the following is a late sign of the anaphylactic reaction?

urticaria.
wheezing.
increase in gastric motility.
decrease in blood pressure.

Explanation:

Analyze the progression of anaphylaxis

Using the Allergic Reaction Progression knowledge point
Anaphylaxis is a rapid, systemic allergic reaction. Early signs typically involve the skin and respiratory systems, such as urticaria (hives) and wheezing, as well as gastrointestinal symptoms like an increase in gastric motility (nausea, vomiting, cramping).

Identify the late sign

Using the Allergic Reaction Progression knowledge point
As the systemic reaction progresses and worsens, widespread vasodilation and increased capillary permeability lead to distributive shock. A decrease in blood pressure (hypotension) is a late, critical sign indicating decompensation and life-threatening anaphylactic shock.

Answer:

• Urticaria.
• Wheezing.
• Increase in gastric motility.
• Decrease in blood pressure. (Correct answer)