RICHMOND HEIGHTS, MO. -- Eight municipalities in the central corridor of St. Louis County are joining together to improve the response when people need help after suffering a heart attack or other cardiac event.

The cities of Brentwood, Clayton, Maplewood, Olivette, Richmond Heights, Rock Hill, Shrewsbury, Webster Groves, and East Central Dispatch Center are launching the PulsePoint smartphone application which alerts nearby CPR trained citizens of a victim's location and closest public access AED

Sudden Cardiac Arrest, or SCA, is a leading cause of death in the United States, accounting for an estimated 325,000 deaths each year or 1,000 deaths per day. The American Heart Association estimates that effective bystander CPR, provided immediately after sudden cardiac arrest, can double or triple a person's chance of survival. However, only about one quarter of SCA victims receive bystander CPR and even fewer receive a potentially lifesaving therapeutic shock from a public access AED. Improving bystander CPR rates and access to AEDs is critical to survival.