Advanced Emergency Medical Technician (AEMT) Practice Test 2025 - Free AEMT Practice Questions and Study Guide.

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What is the most common cause of anaphylactic shock?

Food allergies

The most common cause of anaphylactic shock is indeed related to food allergies. Food allergies can trigger severe allergic reactions in susceptible individuals, which can lead to anaphylaxis—a life-threatening condition that requires immediate medical intervention. Common allergens include peanuts, tree nuts, shellfish, milk, eggs, and wheat, among others. When a person with a food allergy ingests the triggering food, their immune system reacts violently, releasing large amounts of histamine and other chemicals, which can cause a rapid onset of symptoms including difficulty breathing, swelling, hives, and potentially, severe hypotension.

While medication reactions, insect stings, and pollen exposure can also result in anaphylaxis, food allergies remain the leading cause in many populations, particularly in younger individuals. It is crucial for AEMTs to recognize food allergies as a significant risk factor for anaphylaxis and to be prepared for rapid assessment and treatment in such situations.

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Pollen exposure

Medication reactions

Insect stings

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