The registry is an observational study which enroll all the patients who suffered an out-of-hospital cardiac arrest of any etiology in the Lombardia Region The follow-up of the patients is at 1 month after the event, 6 month and every year up to five years after the event.
The registry enroll all the patients who suffered an out-of-hospital cardiac arrest in the Lombardia Region with a follow-up up to ten years after the event.