Question

which of the following is the most serious physical manifestation of anaphylaxis?

urticaria.
wheezing.
pruritus.
hypotension.

Explanation:

Evaluate systemic severity of manifestations

Using the Anaphylaxis Management knowledge point

Anaphylaxis is a severe, life-threatening systemic allergic reaction. While urticaria (hives) and pruritus (itching) are common dermatological signs, they are not immediately life-threatening. Wheezing indicates bronchoconstriction and airway compromise, which is highly serious. However, systemic vasodilation leading to profound Hypotension (distributive shock) represents cardiovascular collapse, which is the most critical and immediately fatal physical manifestation of anaphylaxis if left untreated.

Identify the most critical threat

Using the Airway Compromise Indicators knowledge point

Comparing respiratory compromise (wheezing) and cardiovascular collapse (hypotension), profound hypotension indicates anaphylactic shock, which compromises perfusion to all vital organs simultaneously and is the most severe systemic manifestation among the choices.

Answer:

• Urticaria.
• Wheezing.
• Pruritus.
• Hypotension. (Correct answer)