A child with suspected major allergic reaction: besides epinephrine, what are other initial interventions?

• A. Airway management, oxygen, intravenous fluids, antihistamines, and corticosteroids; monitor for biphasic reaction.
• B. Only antihistamines.
• C. Observational waiting.
• D. Immediate intubation for all.

Answer: (A)

In a child with a suspected major allergic reaction, the main priority after giving epinephrine is to support life by ensuring the airway, breathing, and circulation are secure. Airway management may be needed if there are signs of swelling or compromise; providing high-flow oxygen helps maximize oxygenation; establishing IV access allows rapid administration of fluids if there’s hypotension or shock. Intravenous fluids are important to support circulation when a reaction causes vasodilation and capillary leakage. Antihistamines and corticosteroids are helpful adjuncts—they can reduce symptoms and may blunt late-phase reactions, but they do not reverse the life-threatening effects of anaphylaxis as quickly as epinephrine, so they’re added to the plan rather than substituted for it. Because biphasic symptoms can occur hours after resolution, careful monitoring is essential to catch any recurrence early.

Choosing only antihistamines neglects the critical needs of airway and circulation; waiting without intervention risks deterioration; intubation for everyone is unnecessary and inappropriate—airway support is reserved for those with clear signs of airway obstruction or impending failure rather than all patients. The approach that combines airway support, oxygen, IV fluids, antihistamines and corticosteroids as needed, and observation for biphasic reaction, reflects the correct initial management after epinephrine in a major allergic reaction.