In English

SMS-lifesavers is a unique project in which we send SMS to cardiopulmonary resuscitation (CPR) trained civilians to get more people to start CPR early, before the ambulance arrives.

Our system is active in the entire county of Stockholm and we have now managed to link our SMS-system to the Swedish defibrillator register so we would urge anyone who has a defibrillator to register it on

Each year some 900 locals in Stockholm suffer from cardiac arrest outside the hospital. Most people do not survive! The SMS-lifesaver project that started in May 2010 was initially available for those who lived or worked in central Stockholm but since November 2011 everybody in the county may join in.

The SMS-lifesaver project is a remarkable project that uses mobile location technologies in order to improve survival after cardiac arrest outside the hospital by engaging civilians to begin CPR before the ambulance is on site. When a suspected cardiac arrest has been received by 112 (The Swedish emergency number) you may if you are nearby quickly be alerted to the site via your mobile phone.


Project SMS-lifesavers aims to improve survival after cardiac arrest in the county of Stockholm. SMS-lifesavers is a unique research project run by Södersjukhuset and Karolinska Institutet, where mobile positioning technology (geographic definition of the position of mobile phones) are used to identify and quickly alert the lifesaver with knowledge of cardiopulmonary resuscitation in cardiac arrest outside the hospital.

Time is the most important factor for survival

When cardiac arrests outside the hospital occur, time from cardiac arrest until the life support begins is the most important factor for survival. The probability of surviving a cardiac arrest is low but increases dramatically if the victim’s breathing and circulation is maintained by CPR and if a defibrillator can be used early in the course of actions.

You can save lives by using your cell phone

In Sweden, over 3 million people are trained in cardiopulmonary resuscitation. There are good opportunities for those who suffer cardiac arrest outside the hospital to be able to survive if only the aid may reach the victims. By using mobile positioning technology i.e. geographical positioning of mobile phones, you who are trained in CPR may save lives by being alerted via your cell phone at the scene of a suspected cardiac arrest if it occurs closeby.

How SMS-lifesavers works

When an emergency call is received by the 112 a geographical position is determined for the caller of the conversation. If there is suspicion that a cardiac arrest has occurred the emergency operator activates a positioning system that locates the cell phone users connected to the service SMS-lifesavers. In cases where a lifesaver is in the vicinity of the site of the suspected cardiac arrest the lifesaver is alerted through the mobile phone. Meanwhile ambulance and emergency services are alerted.

The alarm to the SMS-lifesaver’s mobile phone comes as a push though the SMSlifesaver-app. The push-message contains information from the emergency services about where the suspected cardiac arrest has occurred and shows you a map of your location and the location of the cardiac arrest. You may be alerted to either:

a) Do CPR

b) Fetch a defibrillator

A while after the alarm the lifesaver is contacted with a follow-up push-message as to describe what happened. This is partly due to it being a research project and also due to a possibility for the lifesavers to tell us in the project if they wish to have more contact about what happened.

You as a lifesaver

To be included in the project SMS-lifesavers you must be over 18 and have completed training in cardiopulmonary resuscitation earliest in 2012. You must also have a good command of Swedish. All communication to SMS-lifesavers is done in Swedish only. If you get an alarm and arrive before the ambulance and rescue services introduce yourself as an SMS-lifesaver and begin CPR. When the ambulance and emergency services arrive hand over to them in a good way and if possible give a brief report on what you’ve seen and done. If instead you arrive after the ambulance or rescue services then your skills are to be regarded as superfluous. Avoid going forward and instead let them work undisturbed at the site.

It is important to remember that society’s ordinary resources are always alerted to the site. You as an SMS-lifesaver can be another resource that can be life-saving for the person suffering from cardiac arrest but the ambulance and the rescue services arrive quickly to the site.

Do remember that all information in this project that SMS-lifesavers receive is in Swedish only. If you are comfortable reading and understanding Swedish you may soon sign up.

Questions about the project?

Use the contact form that you may find here.