The PulsePoint app notifies users when someone nearby is experiencing cardiac arrest. COLUMBIA - Multiple Boone County health organizations are coming together to educate and arm the public with tools to improve the survival odds of cardiac arrest. MU Health Care, Boone County Joint Communications, Boone Health Ambulance Service, Boone County Fire District, Columbia Fire Department, and the Southern Boone County Fire Protection District held a demonstration of the new PulsePoint app, which is supposed to help improve cardiac arrest survival rates, Thursday afternoon. The app notifies users when someone nearby is experiencing cardiac arrest. If the emergency takes place in a public space, the app will alert trained citizens and emergency crews to the exact location. It also directs bystanders to the closest public automated external defibrillator (AED).