What is the recommended management for anaphylaxis from insect stings in the EMS setting?

• A. Assess airway, breathing, and circulation; administer epinephrine per protocol; place patient supine with legs elevated if tolerated; start IV fluids as indicated; monitor closely; prepare for advanced care
• B. Observe and give antihistamines only
• C. Sit upright and watch
• D. Elevate legs only

Answer: (A)

Anaphylaxis from insect stings is a time-critical emergency, and the most effective management centers on rapid epinephrine administration along with essential airway, breathing, and circulation support. In EMS, the immediate step is to assess and secure the airway and breathing, then treat life-threatening edema and hypotension with epinephrine given as soon as possible per protocol. Epinephrine works quickly to reduce airway swelling, open the bronchi, and raise blood pressure by constricting blood vessels and increasing heart output. After giving epinephrine, position the patient supine with legs elevated if tolerated to improve venous return and perfusion, while continuing to monitor breathing and airway status. Start IV fluids as indicated to support circulation, and prepare for advanced care or transport to the hospital for ongoing treatment and observation because reactions can evolve and a biphasic response is possible. Oxygen and other supportive measures may be used as needed.

Antihistamines alone cannot treat anaphylaxis and waiting or simply observing is inappropriate, and sitting up or elevating the legs alone does not address the threat to the airway and circulation. This approach provides rapid, comprehensive management to stabilize the patient and prevent progression while arranging definitive care.