Which action is essential to address hypoxia during pediatric cardiac arrest?

• A. Ensure the airway is open and ventilation with adequate oxygen
• B. Administer epinephrine
• C. Defibrillate
• D. Hyperventilate at a high rate

Answer: (A)

address hypoxia by keeping the airway open and delivering ventilation with adequate oxygen. In pediatric cardiac arrest, hypoxia is a common trigger, so restoring oxygen delivery is the most immediate and impactful step. Providing effective breaths through a bag–valve–mask or an advanced airway with high-flow oxygen ensures that oxygen reaches the lungs and enters the bloodstream, supporting tissue perfusion during ongoing chest compressions.

Epinephrine helps improve perfusion pressure and rhythm management, but it does not directly correct the lack of oxygen delivery. Defibrillation is essential for certain shockable rhythms, but many pediatric arrests from hypoxia present as non-shockable rhythms, where correcting ventilation is the priority. Hyperventilating at a high rate can actually hinder circulation by decreasing venous return and cerebral perfusion, so it is not the appropriate focus.