As a newer paramedic i have what may be a dumb question. I have been on a few full arrests recently where my older paramedic partner seems to think that we are able to judge the quality of chest compressions by watching the waveform on the cardiac monitor. At first i thought that was one of those tricks you learn over time but the more i think about it it doesnt make sense. The monitor measures electrical activity of the myocardium. CPR is simply a mechanical function. That being said is there a way to effectively judge quality of chest compressions other than ETCo2? I may be way out in left field here and wont have my feelings hurt if i get critical responses. I want to be squared away without comi g off like im questiong my FTO.