During CPR on a 3-year-old, what is the correct compression to ventilation ratio?

In pediatric CPR for a child around the age of 3, the correct compression to ventilation ratio is 30 to 2 when performed by a single rescuer. This approach is consistent with the guidelines set forth by organizations such as the American Heart Association.

The rationale for using a 30 to 2 ratio in a one-rescuer scenario is primarily to ensure effective circulation and oxygenation. The higher number of compressions (30) allows for better blood flow to vital organs during the critical moments of cardiac arrest, while the ratio of two ventilations ensures that adequate oxygen is provided.

When there are multiple rescuers, the ratio changes to 15 compressions followed by 2 breaths to allow for a balance between maintaining circulation and providing breaths, but for a single rescuer performing CPR on a child, sticking to 30 compressions followed by 2 breaths provides a more effective response in managing the emergency situation.