A child has an anaphylactic reaction to contrast dye used in an X-ray. After the emergency is over and the child is stable in the intensive care unit, the nurse explains to the parents what happens in anaphylaxis. The nurse explains that histamine is released during an anaphylactic reaction and that the action of histamine includes:
A)Release of IgE antibodies.
B)Smooth muscle contraction.
C)Increased capillary permeability.
D)Vasoconstriction.
E)Red cell destructions

Question

Quizplus · Accepted Answer

Histamine release during anaphylaxis causes smooth muscle contraction, leading to bronchoconstriction and narrowing of airways. It also increases capillary permeability, leading to swelling, hives, and a drop in blood pressure. Histamine release does not result in the release of IgE antibodies, vasoconstriction, or red cell destruction.

A Child Has an Anaphylactic Reaction to Contrast Dye Used