StreetDoctor
Contributor
Won't chest compressions alone cause some air to be expelled from the lungs? Wouldn't this cause some air exchange? Granted, not as much as efficient rescue breaths, but
As Don said no, I think it would be mostly dead space. Another important concept to remember is the teachings that say you don't need to give breaths are relying on the fact that you've activated EMS and they will be there shortly to take over and will place an advanced airway.