Disruptive shock in children is most commonly caused by which condition?

• A. Hypovolemia
• B. Pulmonary embolism
• C. Sepsis
• D. Anaphylaxis

Answer: (C)

Distributive shock in children happens when the blood vessels dilate and fluid leaks into tissues, leading to poor perfusion even if the overall fluid status isn’t severely low. In pediatrics, the most common trigger for this pattern is sepsis, where infection sets off a systemic inflammatory response that causes widespread vasodilation and capillary leak. This makes septic shock the primary cause of distributive shock in kids. Other options reflect different shock mechanisms—hypovolemia causes shock from fluid loss (a separate category), pulmonary embolism is rare in children and produces obstructive effects, and while anaphylaxis can cause distributive shock, it is less common as the cause in pediatric populations. So sepsis best explains why distributive shock is most often seen in children.