CAMRT Radiography Practice Exam

What is the primary treatment for anaphylactic shock?

1. Antihistamines

2. Oxygen therapy

3. Epinephrine

4. Intravenous fluids

The correct answer is: Epinephrine

The primary treatment for anaphylactic shock is epinephrine. Anaphylaxis is a severe, life-threatening allergic reaction that occurs suddenly after exposure to an allergen. The rapid onset of symptoms can lead to respiratory distress, cardiovascular collapse, and significant morbidity or mortality if not treated promptly. Epinephrine works by activating both alpha and beta-adrenergic receptors. This leads to vasoconstriction, which increases blood pressure, and enhances myocardial contractility and heart rate, counteracting the circulatory collapse often seen in anaphylaxis. Additionally, epinephrine causes bronchodilation and reduces airway swelling, alleviating respiratory distress, a critical concern during anaphylactic episodes. While antihistamines and oxygen therapy may be utilized to provide auxiliary support in anaphylactic reactions, they do not address the immediate and life-threatening nature of the condition in the way that epinephrine does. Antihistamines can be helpful in treating milder allergic reactions but are not sufficient for treating anaphylaxis. Intravenous fluids may be necessary to manage hypotension but primarily serve as a supportive measure, and their administration does not replace the need for epinephrine in the acute treatment phase. Thus, the use of epinephrine is crucial for