Cardiopulmonary resuscitation (CPR) is an emergency medical procedure for a victim of cardiac arrest or, in some circumstances, respiratory arrest. CPR is performed in hospitals, or in the community by laypersons or by emergency response professionals. CPR has for 50 years consisted of the combination of artificial blood circulation with artificial respiration (also known as mouth-to-mouth (MTM)), However, in March 2008 the American Heart Association, in an historic reversal, endorsed the effec… (More on Cpr)