The GoodSAM App is an advanced App that is used by emergency services and NHS Volunteers for a plethora of functions, however, as a cardiac responder, once you have logged in and got to understand it, it sits in the background of your phone (not using significant battery as it uses triangulation of masts rather than GPS to know where you are).
When an ambulance service receives a 999 call with determinant likely to indicate a cardiac arrest (e.g. not conscious / not breathing), then the system automatically triggers an algorithm to alert the nearest GoodSAM responders. For example, the nearest 3 people. If someone doesn't hear the alert or can't go, the next nearest is alerted.
If you are alerted your phone will make a siren sound (or whatever sound you choose from the "Me" tab) and you will be asked if you can help. If you can, then a map appears showing you where to go.
On arrival, please introduce yourself and explain you have been alerted by the ambulance service. Ensure the scene is safe, assess the patient and start CPR if appropriate. You should only provide basic life support (CPR and AED use in line with Resus Council UK Guidelines) and when the ambulance service arrives, please continue to help under their guidance.
Afterwards, please fill in the report form on the app and if you are feeling you could do with talking to someone, please request a welfare check on the last page.