In Switzerland suffer each year from 0.4 to 1% of the population cardiovascular arrest; ie up to 8000 people per year.

In addition to chest compressions and ventilation early defibrillation is one of the cornerstones of a successful resuscitation. AEDs are public access defibrillators and thus can not be serviced only by qualified personnel. Immediately after the occurrence of such an event the people concerned would reanimierbar by immediately initiated measures up to 80%.
But in fact in 2005 survived throughout Switzerland only 5% of patients had a cardiac arrest.

The geographical distribution of the population and the bases of the emergency services are very different. Crucial for the survival of the rapid alerting the professional emergency services, and immediately commenced and continued without interruption resuscitation.

With a sudden heart people - circulatory arrest to reach as fast as humanly possible, voluntary groups were recruited and trained by the regional emergency services, which are alarmed by the medical emergency center 144 Bern event occurs.

With this application voluntary lay rescuers will be alerted in the region of emergency in seconds, which can shorten the therapy-free interval until the emergency services arrive massively. With this application more first responders can be alerted in less time and faster. In Ticino, the probability of survival increased under cardiac - circulatory arrest to over 40%.