The nurse is caring for a child and notes periorbital edema and urticaria. Which action by the nurse is priority?

Choice A rationale While periorbital edema and urticaria can indicate fluid shifts related to a systemic inflammatory or allergic reaction, evaluating fluid volume status is not the immediate priority. The priority lies in ensuring a patent airway, as severe allergic reactions (anaphylaxis) can rapidly cause laryngeal edema and bronchospasm, compromising respiration. Assessment of breathing takes precedence over generalized fluid assessment. Choice B rationale Periorbital edema and generalized urticaria (hives) are classic signs of a systemic hypersensitivity reaction (allergic reaction), which carries a high risk for progression to anaphylaxis. The most critical complication of anaphylaxis is airway compromise due to laryngeal edema or bronchospasm. Assessing lung sounds bilaterally and the quality of respirations is the priority action to detect early signs of a life-threatening change in respiratory status. Choice C rationale Corticosteroids like methylprednisolone are administered to reduce inflammation and suppress the delayed-phase allergic response, but they do not have an immediate effect on the acute symptoms and are not the first-line treatment for anaphylaxis. The priority intervention for potential anaphylaxis is to secure the airway, often requiring epinephrine administration for rapid bronchodilation and vasoconstriction. Choice D rationale Antibiotics are indicated for bacterial infections. Urticaria and edema resulting from an allergic reaction are mediated by the release of inflammatory mediators like histamine from mast cells and basophils, not by a bacterial process. Administering antibiotics would be inappropriate and could potentially worsen the child's condition if the medication itself were the source of the allergic reaction.