If a patient experiencing severe allergic reaction to peanuts receives an epinephrine injection, which consequence is most likely related to histamine?

💡 Explanation

Epinephrine reverses the effects of histamine by causing vasoconstriction, which decreases vascular permeability and reduces edema. This is because epinephrine is a vasopressor that opposes histamine's vasodilation; therefore, edema is reduced, rather than other processes mediated by histamine like gastric acid secretion or smooth muscle contraction.

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