Question: Why 15:2 ratio of compressions to ventilations in child CPR for Healthcare Providers?
The biggest reason why children are 15:2 with 2 rescuer Healthcare Provider CPR is because children are very much more likely to have cardiac arrest secondary to respiratory issues and lack of oxygen. Children and infants generally have very strong hearts that want to beat on their own. If the heart stops, it is usually because it has not been supplied enough oxygen.
An adult heart tends to stop (patient tends to go into pulseless arrest) for truly cardiac reasons, and therefore, a 30:2 ratio remains the preferred ratio for adults. Also, single rescuer CPR in children and infants remains 30:2, because it takes quite a bit of time to switch back and forth between breathing and compressions. Once two rescuers are present, however, this ratio can be changed to 15:2, maximizing oxygenation in children and infants, while still minimizing interruptions in compressions.
Note, however, that the ration of compressions to ventilations in Heartsaver (non-healthcare provider) CPR remains always 30:2 for simplicity sake, and due to the fact that working as a team is not covered in the Heartsaver course.