08/09/2026
When a heart stops, survival is measured in minutes, and the single biggest factor is whether a bystander starts CPR before the professionals arrive. Sweden built a system to put a trained bystander there on purpose.
The country signed up thousands of people trained in basic life support and wired them into the emergency dispatch system through a phone app. When a call reports a suspected cardiac arrest, the software pings every trained volunteer within a short radius. Those close enough drop what they're doing and run for the address while the ambulance is still on its way.
Roughly four in ten times, one of these volunteers is first through the door, so chest compressions often begin minutes earlier than they otherwise would. Those extra minutes often decide whether the patient lives. Researchers who studied the scheme found it measurably raised the rate of bystander CPR, and several other countries have since built their own versions.
