Dental Assistant Practice Exam

What triggers anaphylactic shock in patients?

1. Excessive exercise

2. Presence of an allergen

3. High blood sugar

4. Certain medications

The correct answer is: Presence of an allergen

Anaphylactic shock is a severe, potentially life-threatening allergic reaction that is primarily triggered by the presence of an allergen. When a person with a sensitized immune system is exposed to a specific allergen, such as certain foods, insect stings, or medications, their immune system overreacts. This leads to the release of large amounts of histamine and other chemicals into the bloodstream, resulting in symptoms like difficulty breathing, swelling, hives, and a sudden drop in blood pressure. Understanding that an allergen provokes this intense immune response is crucial to recognizing the nature of anaphylaxis and the importance of prompt treatment. While excessive exercise may exacerbate certain conditions, it is not a direct trigger for anaphylactic shock. High blood sugar mainly affects individuals with diabetes and is not related to allergic reactions. Although certain medications can indeed provoke an allergic response in some individuals, it's the underlying allergic reaction to an allergen that is the central cause of anaphylactic shock. This highlights the importance of identifying and avoiding specific allergens, as they are the root cause of this serious medical condition.