here is the problem... doing CPR is not hard... doing QUALITY CPR is not easy...
if the compressions are not deep enough, they are ineffective... if the rate is not there, ineffective... if the interruptions are too long, again, CPR is rendered ineffective... it is all about building up coronary perfusion pressures, and maintaining them... do you teach about that? most heartsaver CPR courses do not... most "health care providers" who are not medics have a hard time explaining the physiology behind CPR... if the understanding is not there, mistakes happen.. there are not "degrees" of CPR... it can not be "pretty good"... it is either quality, effective CPR or a waste of time...
that does not even cover the ventilations... are you aware of the studies finding that health care providers are overventilating during CPR? that this overventilation is building up intrathoracic pressures to the point that it is inhibiting venous return? basically building up pressures that fight against the compressions you are doing... is that really taught in CPR class? it wasn't in mine, and apparently there is a large knowledge gap here, because the overventilation by "professionals" is a serious issue... if one had a true grasp of the concept of negative intrathoracic pressures and it's effect on venous return, they would not dream of overventilating... this theory is behind the development of the impedance threshold devices, designed to lower intrathoracic pressures, creating a vacuum effect.. how many are well versed in this?
so, back to my earlier point... learning CPR is easy... learning to do it really well without mistakes is another story.