Which scenario is most likely to lead to cardiac arrest in a child?

• A. Major trauma
• B. Cardiac congenital defect
• C. Airway and breathing problems
• D. Poisoning

Answer: (C)

In children, cardiac arrest is most often the result of respiratory failure leading to hypoxia. The heart can keep beating for a while, but when oxygen delivery to the brain and heart drops due to airway obstruction or inadequate breathing, the risk of arrest increases quickly. So scenarios involving airway and breathing problems—such as airway obstruction, severe respiratory distress, or failure to oxygenate—are the likeliest precursors to cardiac arrest in kids.

Trauma, congenital heart defects, or poisoning can cause arrest as well, but they are not as commonly the immediate trigger in pediatric emergencies as respiratory compromise. That’s why airway and breathing problems are the most critical and most likely scenario to lead to cardiac arrest in a child.