If you’re only doing chest compressions, how is new oxygen being introduced into the body. Me thinks respitory arrest is seperate from cardiac arrest.
The article stated there is already a 8 minute reserve of oxygen in the blood. The important thing is to get the heart started and the blood moving. Once the heart restarts, they will breath on their own.
in theory, the compression and relaxation of the chest cavity also contracts and expands the lungs, exchanging air.