Interesting figures.

I have never considered myself to be in super shape, yet I have performed CPR for over 15 minutes without pooping out (I was ready to be releaved tho), I never had a victim vomit during the procedure, but have seen it happen. That is usually caused by blowing air into the stomach instead of lungs, caused by inproper head positioning. I batted a thousand in my CPR, lost every one of them (but then all were found to have massive closed head injuries, non-survivable). I never performed CPR "bareback" either, always used a pocket mask...