 Context: Expert recommendations for CPR skills blowing air into the lungs, pressing on the chest are poorly followed by health care providers. CPR sensors as small as a hockey puck placed on the chest during CPR delivery are able to coach a rescuer to perform better CPR through corrective voice feedback. More adults survive when the quality of CPR Q-CPR is improved. This new technology is currently not approved for use in children, specifically 6 months to 8 years of age. 